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Author SHA1 Message Date
Chris Lattner
04b091a782 handle equality memcmp of 8 bytes on x86-64 with two unaligned loads and a 
compare.  On other targets we end up with a call to memcmp because we don't
want 16 individual byte loads.  We should be able to use movups as well, but
we're failing to select the generated icmp.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92107 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-24 01:07:17 +00:00
Chris Lattner
8047d9a6be move an optimization for memcmp out of simplifylibcalls and into 
SDISel.  This optimization was causing simplifylibcalls to 
introduce type-unsafe nastiness.  This is the first step, I'll be 
expanding the memcmp optimizations shortly, covering things that
we really really wouldn't want simplifylibcalls to do.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92098 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-24 00:37:38 +00:00
Daniel Dunbar
a85e4017aa Remove an XFAIL. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92036 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 20:13:44 +00:00
Mikhail Glushenkov
e0b6570d24 Allow (set_option SwitchOption, true). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91997 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 12:49:30 +00:00
Sanjiv Gupta
76d2f9a4db Reapply 91904. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91996 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 11:19:09 +00:00
Sanjiv Gupta
e433d5e1f4 deleting empty file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91994 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 10:35:24 +00:00
Sanjiv Gupta
6d48855a56 Reverting back 91904. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91993 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 09:46:01 +00:00
Dale Johannesen
9949933d6e Use more sensible type for flags in asms. PR 5570. 
Patch by Sylve`re Teissier (sorry, ASCII only).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91988 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 07:32:51 +00:00
Eric Christopher
d060b2576a Update objectsize intrinsic and associated dependencies. Fix 
lowering code and update testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91979 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-23 02:51:48 +00:00
Anton Korobeynikov
a1508f9514 Add testcase for PR5703 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91931 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 22:37:23 +00:00
Evan Cheng
b1f4981333 Remove target attribute break-sse-dep. Instead, do not fold load into sse partial update instructions unless optimizing for size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91910 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 17:47:23 +00:00
Sanjiv Gupta
66500208a5 While converting one of the operands to a memory operand, we need to check if it is Legal and does not result into a cyclic dep. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91904 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 14:25:37 +00:00
Chris Lattner
516088d4ae specify a triple to use, fixing the test on non-x86-64 hosts. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91900 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 07:01:12 +00:00
Bob Wilson
f27a4cd783 Generalize SROA to allow the first index of a GEP to be non-zero. Add a 
missing check that an array reference doesn't go past the end of the array,
and remove some redundant checks for in-bound array and vector references
that are no longer needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91897 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:57:14 +00:00
Chris Lattner
665e947740 various cleanups, make the disassemble reject lines with too much 
data on them, for example:

	addb	%al, (%rax)
simple-tests.txt:11:5: error: excess data detected in input
0 0 0 0 0 
    ^



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91896 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:56:51 +00:00
Chris Lattner
2adbef06a6 rewrite the file parser for the disassembler, implementing support for 
comments.  Also, check in a simple testcase for the disassembler,
including a test for r91864


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91894 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:37:58 +00:00
Chris Lattner
1a0e7081c3 Implement PR5795 by merging duplicated return blocks. This could go further 
by merging all returns in a function into a single one, but simplifycfg 
currently likes to duplicate the return (an unfortunate choice!)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91890 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:07:30 +00:00
Chris Lattner
42385b03aa convert to filecheck 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91889 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-22 06:04:26 +00:00
David Greene
f660802f34 Fix a bug in !subst where TableGen would go and resubstitute text it had 
just substituted.  This could cause infinite looping in certain
pathological cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91843 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 21:21:34 +00:00
Daniel Dunbar
ff99b16637 XFAIL these tests on powerpc, under the assumption that no one cares. If you care, feel free to fix. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91826 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 17:31:59 +00:00
Chris Lattner
4c1e3da0cd fix PR5837 by having SSAUpdate reuse phi nodes for the 
'GetValueInMiddleOfBlock' case, instead of inserting 
duplicates.

A similar fix is almost certainly needed by the machine-level
SSAUpdate implementation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91820 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 07:16:11 +00:00
Chris Lattner
65f067fa63 add check lines for min/max tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91816 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 06:08:50 +00:00
Chris Lattner
a0773eb330 really convert this to filecheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91815 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 06:06:10 +00:00
Chris Lattner
b109b5c148 give instcombine some helper functions for matching MIN and MAX, and 
implement some optimizations for MIN(MIN()) and MAX(MAX()) and 
MIN(MAX()) etc.  This substantially improves the code in PR5822 but
doesn't kick in much elsewhere.  2 max's were optimized in 
pairlocalalign and one in smg2000.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91814 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 06:03:05 +00:00
Chris Lattner
a278d4a1f7 filecheckize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91813 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 05:53:13 +00:00
Chris Lattner
3bf6815556 enhance x-(-A) -> x+A to preserve NUW/NSW. 
Use the presence of NSW/NUW to fold "icmp (x+cst), x" to a constant in
cases where it would otherwise be undefined behavior.

Surprisingly (to me at least), this triggers hundreds of the times in
a few benchmarks: lencode, ldecode, and 466.h264ref seem to *really*
like this.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91812 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 04:04:05 +00:00
Chris Lattner
2799bafb98 Optimize all cases of "icmp (X+Cst), X" to something simpler. This triggers 
a bunch in lencode, ldecod, spass, 176.gcc, 252.eon, among others.  It is 
also the first part of PR5822


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91811 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 03:19:28 +00:00
Chris Lattner
6b57a797ab convert to filecheck 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91810 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-21 03:11:05 +00:00
Chris Lattner
f648125be9 fix an overly conservative caching issue that caused memdep to 
cache a pointer as being unavailable due to phi trans in the
wrong place.  This would cause later queries to fail even when
they didn't involve phi trans.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91787 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 21:29:22 +00:00
Chris Lattner
16e7ae42a1 fix inconsistent use of tabs 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91783 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 20:44:43 +00:00
Sanjiv Gupta
bcfd12a234 Emit direction operand in binary insns that stores in memory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91777 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 13:52:01 +00:00
Sanjiv Gupta
3f5d7642ce Test cases for changes done in 91768. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91773 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 11:38:14 +00:00
Chris Lattner
0ebc6ce974 fix PR5827 by disabling the phi slicing transformation in a case 
where instcombine would have to split a critical edge due to a
phi node of an invoke.  Since instcombine can't change the CFG,
it has to bail out from doing the transformation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91763 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-19 07:01:15 +00:00
Evan Cheng
9ab2b98ba5 Increase opportunities to optimize (brcond (srl (and c1), c2)). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91717 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 21:31:31 +00:00
Bob Wilson
b742defa0a Reapply 91459 with a simple fix for the problem that broke the x86_64-darwin 
bootstrap.  This also replaces the WeakVH references that Chris objected to
with normal Value references.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91711 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 20:14:40 +00:00
Mikhail Glushenkov
9503b49462 Make 'set_option' work with list options. 
This works now: (set_option "list_opt", ["val_1", "val_2", "val_3"])

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91679 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 11:27:26 +00:00
Eli Friedman
97b087c778 Optimize icmp of null and select of two constants even if the select has 
multiple uses.  (The construct in question was found in gcc.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91675 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 08:22:35 +00:00
Evan Cheng
400073d546 On recent Intel u-arch's, folding loads into some unary SSE instructions can 
be non-optimal. To be precise, we should avoid folding loads if the instructions
only update part of the destination register, and the non-updated part is not
needed. e.g. cvtss2sd, sqrtss. Unfolding the load from these instructions breaks
the partial register dependency and it can improve performance. e.g.

movss (%rdi), %xmm0
cvtss2sd %xmm0, %xmm0

instead of
cvtss2sd (%rdi), %xmm0

An alternative method to break dependency is to clear the register first. e.g.
xorps %xmm0, %xmm0
cvtss2sd (%rdi), %xmm0


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91672 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 07:40:29 +00:00
Dan Gohman
f838e2366a Tidy up this testcase and add test for tailcall optimization 
with unreachable.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91650 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:05:06 +00:00
Bob Wilson
5afffaed5c Handle ARM inline asm "w" constraints with 64-bit ("d") registers. 
The change in SelectionDAGBuilder is needed to allow using bitcasts to convert
between f64 (the default type for ARM "d" registers) and 64-bit Neon vector
types.  Radar 7457110.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91649 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:03:29 +00:00
Dan Gohman
f042396b0f Remove "tail" keywords. These calls are not intended to be tail calls. 
This protects this test from depending on codegen not performing the
tail call optimization by default.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91648 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 01:02:18 +00:00
Jakob Stoklund Olesen
f8ad5bcdb5 Add test case for the phi reuse patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91642 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:11:44 +00:00
Sean Callanan
108934c65d Instruction fixes, added instructions, and AsmString changes in the 
X86 instruction tables.

Also (while I was at it) cleaned up the X86 tables, removing tabs and
80-line violations.

This patch was reviewed by Chris Lattner, but please let me know if
there are any problems.

* X86*.td
	Removed tabs and fixed 80-line violations

* X86Instr64bit.td
	(IRET, POPCNT, BT_, LSL, SWPGS, PUSH_S, POP_S, L_S, SMSW)
		Added
	(CALL, CMOV) Added qualifiers
	(JMP) Added PC-relative jump instruction
	(POPFQ/PUSHFQ) Added qualifiers; renamed PUSHFQ to indicate
		that it is 64-bit only (ambiguous since it has no
		REX prefix)
	(MOV) Added rr form going the other way, which is encoded
		differently
	(MOV) Changed immediates to offsets, which is more correct;
		also fixed MOV64o64a to have to a 64-bit offset
	(MOV) Fixed qualifiers
	(MOV) Added debug-register and condition-register moves
	(MOVZX) Added more forms
	(ADC, SUB, SBB, AND, OR, XOR) Added reverse forms, which
		(as with MOV) are encoded differently
	(ROL) Made REX.W required
	(BT) Uncommented mr form for disassembly only
	(CVT__2__) Added several missing non-intrinsic forms
	(LXADD, XCHG) Reordered operands to make more sense for
		MRMSrcMem
	(XCHG) Added register-to-register forms
	(XADD, CMPXCHG, XCHG) Added non-locked forms
* X86InstrSSE.td
	(CVTSS2SI, COMISS, CVTTPS2DQ, CVTPS2PD, CVTPD2PS, MOVQ)
		Added
* X86InstrFPStack.td
	(COM_FST0, COMP_FST0, COM_FI, COM_FIP, FFREE, FNCLEX, FNOP,
	 FXAM, FLDL2T, FLDL2E, FLDPI, FLDLG2, FLDLN2, F2XM1, FYL2X,
	 FPTAN, FPATAN, FXTRACT, FPREM1, FDECSTP, FINCSTP, FPREM,
	 FYL2XP1, FSINCOS, FRNDINT, FSCALE, FCOMPP, FXSAVE,
	 FXRSTOR)
		Added
	(FCOM, FCOMP) Added qualifiers
	(FSTENV, FSAVE, FSTSW) Fixed opcode names
	(FNSTSW) Added implicit register operand
* X86InstrInfo.td
	(opaque512mem) Added for FXSAVE/FXRSTOR
	(offset8, offset16, offset32, offset64) Added for MOV
	(NOOPW, IRET, POPCNT, IN, BTC, BTR, BTS, LSL, INVLPG, STR,
	 LTR, PUSHFS, PUSHGS, POPFS, POPGS, LDS, LSS, LES, LFS,
	 LGS, VERR, VERW, SGDT, SIDT, SLDT, LGDT, LIDT, LLDT,
	 LODSD, OUTSB, OUTSW, OUTSD, HLT, RSM, FNINIT, CLC, STC,
	 CLI, STI, CLD, STD, CMC, CLTS, XLAT, WRMSR, RDMSR, RDPMC,
	 SMSW, LMSW, CPUID, INVD, WBINVD, INVEPT, INVVPID, VMCALL,
	 VMCLEAR, VMLAUNCH, VMRESUME, VMPTRLD, VMPTRST, VMREAD,
	 VMWRITE, VMXOFF, VMXON) Added
	(NOOPL, POPF, POPFD, PUSHF, PUSHFD) Added qualifier
	(JO, JNO, JB, JAE, JE, JNE, JBE, JA, JS, JNS, JP, JNP, JL,
	 JGE, JLE, JG, JCXZ) Added 32-bit forms
	(MOV) Changed some immediate forms to offset forms
	(MOV) Added reversed reg-reg forms, which are encoded
		differently
	(MOV) Added debug-register and condition-register moves
	(CMOV) Added qualifiers
	(AND, OR, XOR, ADC, SUB, SBB) Added reverse forms, like MOV
	(BT) Uncommented memory-register forms for disassembler
	(MOVSX, MOVZX) Added forms
	(XCHG, LXADD) Made operand order make sense for MRMSrcMem
	(XCHG) Added register-register forms
	(XADD, CMPXCHG) Added unlocked forms
* X86InstrMMX.td
	(MMX_MOVD, MMV_MOVQ) Added forms
* X86InstrInfo.cpp: Changed PUSHFQ to PUSHFQ64 to reflect table
	change

* X86RegisterInfo.td: Added debug and condition register sets
* x86-64-pic-3.ll: Fixed testcase to reflect call qualifier
* peep-test-3.ll: Fixed testcase to reflect test qualifier
* cmov.ll: Fixed testcase to reflect cmov qualifier
* loop-blocks.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-11.ll: Fixed testcase to reflect call qualifier
* 2009-11-04-SubregCoalescingBug.ll: Fixed testcase to reflect call
  qualifier
* x86-64-pic-2.ll: Fixed testcase to reflect call qualifier
* live-out-reg-info.ll: Fixed testcase to reflect test qualifier
* tail-opts.ll: Fixed testcase to reflect call qualifiers
* x86-64-pic-10.ll: Fixed testcase to reflect call qualifier
* bss-pagealigned.ll: Fixed testcase to reflect call qualifier
* x86-64-pic-1.ll: Fixed testcase to reflect call qualifier
* widen_load-1.ll: Fixed testcase to reflect call qualifier


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91638 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-18 00:01:26 +00:00
Eli Friedman
b17cb06c35 Allow instcombine to combine "sext(a) >u const" to "a >u trunc(const)". 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91631 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 22:42:29 +00:00
Eli Friedman
8e4b197e0b Make the ptrtoint comparison simplification work if one side is a global. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91624 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:27:47 +00:00
Eli Friedman
0c826d98b3 Slightly generalize transformation of memmove(a,a,n) so that it also applies 
to memcpy. (Such a memcpy is technically illegal, but in practice is safe
and is generated by struct self-assignment in C code.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91621 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 21:07:31 +00:00
Bob Wilson
39c88a641b Re-revert 91459. It's breaking the x86_64 darwin bootstrap. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91607 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 18:34:24 +00:00
Mikhail Glushenkov
994dbe0073 Add a 'set_option' action for use in OptionPreprocessor. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91594 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 07:49:16 +00:00
Eli Friedman
e8e17833be Aggressively flip compare constant expressions where appropriate; constant 
folding in particular expects null to be on the RHS.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91587 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 06:07:04 +00:00
Evan Cheng
4c2b001f13 Revert this dag combine change: 
Fold (zext (and x, cst)) -> (and (zext x), cst)

DAG combiner likes to optimize expression in the other way so this would end up cause an infinite looping.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91574 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-17 00:40:05 +00:00
Daniel Dunbar
2674089cef Reapply r91459, it was only unmasking the bug, and since TOT is still broken having it reverted does no good. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91559 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 20:09:53 +00:00
Daniel Dunbar
fca55c8ac7 Revert "Reapply 91184 with fixes and an addition to the testcase to cover the 
problem", this broke llvm-gcc bootstrap for release builds on
x86_64-apple-darwin10.

This reverts commit db22309800b224a9f5f51baf76071d7a93ce59c9.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91534 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 10:56:17 +00:00
Chris Lattner
24604110ef reapply my strstr optimization. I have reproduced the x86-64 bootstrap 
miscompile (i386.o miscompares) but it happens both with and without
this patch.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91532 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 09:32:05 +00:00
Nick Lewycky
0588bcef8d Make this test pass on Linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91521 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 07:35:25 +00:00
Devang Patel
978b75ee50 XFAIL on ppc-darwin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91495 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 02:11:38 +00:00
Evan Cheng
2e489c4f9d Re-enable 91381 with fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91489 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:53:11 +00:00
Chris Lattner
0001517d9d revert my strstr optimization, I'm told it breaks x86-64 bootstrap. 
Will reapply with a fix when I get a chance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91486 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:46:02 +00:00
Dale Johannesen
fc49bd2447 Do better with physical reg operands (typically, from inline asm) 
in local register allocator.  If a reg-reg copy has a phys reg
input and a virt reg output, and this is the last use of the phys
reg, assign the phys reg to the virt reg.  If a reg-reg copy has
a phys reg output and we need to reload its spilled input, reload
it directly into the phys reg than passing it through another reg.

Following 76208, there is sometimes no dependency between the def of
a phys reg and its use; this creates a window where that phys reg
can be used for spilling (this is true in linear scan also).  This
is bad and needs to be fixed a better way, although 76208 works too
well in practice to be reverted.  However, there should normally be
no spilling within inline asm blocks.  The patch here goes a long way
towards making this actually be true.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91485 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-16 00:29:41 +00:00
Bob Wilson
970eaf2520 Reapply 91184 with fixes and an addition to the testcase to cover the problem 
found last time.  Instead of trying to modify the IR while iterating over it,
I've change it to keep a list of WeakVH references to dead instructions, and
then delete those instructions later.  I also added some special case code to
detect and handle the situation when both operands of a memcpy intrinsic are
referencing the same alloca.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91459 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 22:00:51 +00:00
Chris Lattner
ad6b1fdaf9 optimize strstr, PR5783 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91438 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 19:14:40 +00:00
Mikhail Glushenkov
f8bc1e4b27 Convert llvmc tests to FileCheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91420 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 07:21:14 +00:00
Mikhail Glushenkov
545f96814b Support hook invocation from 'append_cmd'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91419 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 07:20:50 +00:00
Kenneth Uildriks
76df3f398c For fastcc on x86, let ECX be used as a return register after EAX and EDX 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91410 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:27:52 +00:00
Evan Cheng
d7760a4905 Disable 91381 for now. It's miscompiling ARMISelDAG2DAG.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91405 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:07:11 +00:00
Mikhail Glushenkov
e4ac23a0ff Validate the generated C++ code in llvmc tests. 
Checks that the code generated by 'tblgen --emit-llvmc' can be actually
compiled. Also fixes two bugs found in this way:

- forward_transformed_value didn't work with non-list arguments
- cl::ZeroOrOne is now called cl::Optional

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91404 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:04:52 +00:00
Mikhail Glushenkov
b5fab402d0 Pipe 'grep' output to 'count'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91403 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:04:14 +00:00
Mikhail Glushenkov
abf2d986c9 Allow $CALL(Hook, '$INFILE') for non-join tools. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91402 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:04:02 +00:00
Evan Cheng
9818c043d2 Make 91378 more conservative. 
1. Only perform (zext (shl (zext x), y)) -> (shl (zext x), y) when y is a constant. This makes sure it remove at least one zest.
2. If the shift is a left shift, make sure the original shift cannot shift out bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91399 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 03:00:32 +00:00
Evan Cheng
ad9c0a3d8b Use sbb x, x to materialize carry bit in a GPR. The result is all one's or all zero's. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91381 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:53:42 +00:00
Evan Cheng
8acb3100de Fold (zext (and x, cst)) -> (and (zext x), cst). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91380 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:52:11 +00:00
Evan Cheng
99b653c36f Propagate zest through logical shift. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91378 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-15 00:41:36 +00:00
Dan Gohman
2e141d744e Fix integer cast code to handle vector types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91362 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 23:40:38 +00:00
Eric Christopher
38e1074c53 Add radar fixed in comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91312 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 19:07:25 +00:00
Shantonu Sen
bc1c99c4fb Remove empty file completely 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91277 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 14:15:15 +00:00
Chris Lattner
a59adc4015 revert r91184, because it causes a crash on a .bc file I just 
sent to Bob.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91268 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 05:11:02 +00:00
Mikhail Glushenkov
0898d7d4a5 Add a test for the 'init' option property. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91259 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-14 04:06:38 +00:00
Evan Cheng
dd99f3a7dc Disable r91104 for x86. It causes partial register stall which pessimize code in 32-bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91223 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 20:03:14 +00:00
Benjamin Kramer
7b3f1a21ea Fix some CHECK lines which were ignored by accident. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91214 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-12 09:25:50 +00:00
Bob Wilson
73a1b67cb9 Revise scalar replacement to be more flexible about handle bitcasts and GEPs. 
While scanning through the uses of an alloca, keep track of the current offset
relative to the start of the alloca, and check memory references to see if
the offset & size correspond to a component within the alloca.  This has the
nice benefit of unifying much of the code from isSafeUseOfAllocation,
isSafeElementUse, and isSafeUseOfBitCastedAllocation.  The code to rewrite
the uses of a promoted alloca, after it is determined to be safe, is
reorganized in the same way.

Also, when rewriting GEP instructions, mark them as "in-bounds" since all the
indices are known to be safe.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91184 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 23:47:40 +00:00
Anton Korobeynikov
8d1ffbd1ad Lower setcc branchless, if this is profitable. 
Based on the patch by Brian Lucas!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91175 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 23:01:29 +00:00
Dan Gohman
87862e77bb Implement vector widening, splitting, and scalarizing for SIGN_EXTEND_INREG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91158 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 21:31:27 +00:00
Dan Gohman
192db0027c Change this to the correct PR number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91148 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 20:09:21 +00:00
Dan Gohman
050959cd08 Make getUniqueExitBlocks's precondition assert more precise, to 
avoid spurious failures. This fixes PR5758.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91147 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 20:05:23 +00:00
Dan Gohman
a4f9cc4e55 Fix the result type of SELECT nodes lowered from Select instructions with 
aggregate return values. This fixes PR5754.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91145 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 19:50:50 +00:00
Anton Korobeynikov
817a46454a Honour setHasCalls() set from isel. 
This is used in some weird cases like general dynamic TLS model.
This fixes PR5723

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91144 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 19:39:55 +00:00
Evan Cheng
50d070561e Tests for 91103 and 91104. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91105 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-11 06:02:21 +00:00
Eric Christopher
072f6fe196 Add a test for the fix in revision 91009. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91062 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-10 21:11:40 +00:00
Evan Cheng
6fd78ec8a2 It's not safe to coalesce a move where src and dst registers have different subregister indices. e.g.: 
%reg16404:1<def> = MOV8rr %reg16412:2<kill>


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91061 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-10 20:59:45 +00:00
Chris Lattner
16f244e982 Fix PR5744, a case where we were getting the pointer size instead of the 
value size.  This only manifested when memdep inprecisely returns clobber,
which is do to a caching issue in the PR5744 testcase.  We can 'efficiently
emulate' this by using '-no-aa'


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@91004 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-10 00:11:45 +00:00
Evan Cheng
ce72f3fbdf Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90988 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 22:24:42 +00:00
Evan Cheng
c363094e04 Optimize splat of a scalar load into a shuffle of a vector load when it's legal. e.g. 
vector_shuffle (scalar_to_vector (i32 load (ptr + 4))), undef, <0, 0, 0, 0>
=>
vector_shuffle (v4i32 load ptr), undef, <1, 1, 1, 1>

iff ptr is 16-byte aligned (or can be made into 16-byte aligned).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90984 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 21:00:30 +00:00
Chris Lattner
af064aeee6 fix hte last remaining known (by me) phi translation bug. When we reanalyze 
clobbers to forward pieces of large stores to small loads, we need to consider
the properly phi translated pointer in the store block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90978 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 18:21:46 +00:00
Chris Lattner
4d3a16f81b Add a minor optimization: if we haven't changed the operands of an 
add, there is no need to scan the world to find the same add again.
This invalidates the previous testcase, which wasn't wonderful anyway,
because it needed a run of instcombine to permute the use-lists in 
just the right way to before GVN was run (so it was really fragile).
Not a big loss.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90973 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 17:27:45 +00:00
Chris Lattner
eddc65aa0d fix PR5733, a case where we'd replace an add with a lexically identical 
binary operator that wasn't an add.  In this case, a xor.  Whoops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90971 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 17:18:49 +00:00
Chris Lattner
1a247f32dd merge crash-2.ll into crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90969 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 17:17:26 +00:00
Chris Lattner
55fe79f044 the code in GVN that tries to forward large loads to small 
stores is not phi translating, thus it miscompiles really
crazy testcases.  This is from inspection, I haven't seen
this in the wild.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90930 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 02:43:05 +00:00
Chris Lattner
05e15f8897 Switch GVN and memdep to use PHITransAddr, which correctly handles 
phi translation of complex expressions like &A[i+1].  This has the
following benefits:

1. The phi translation logic is all contained in its own class with
   a strong interface and verification that it is self consistent.

2. The logic is more correct than before.  Previously, if intermediate
   expressions got PHI translated, we'd miss the update and scan for
   the wrong pointers in predecessor blocks.  @phi_trans2 is a testcase
   for this.

3. We have a lot less code in memdep.

We can handle phi translation across blocks of things like @phi_trans3,
which is pretty insane :).

This patch should fix the miscompiles of 255.vortex, and I tested it 
with a bootstrap of llvm-gcc, llvm-test and dejagnu of course.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90926 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 01:59:31 +00:00
Evan Cheng
7bd6478cd6 Teach InferPtrAlignment to infer GV+cst alignment and use it to simplify x86 isl lowering code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90925 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 01:53:58 +00:00
Devang Patel
a963306eed Remove tests that are not suitable anymore. Plus they are not testing the original bugfixes anymore. These tests were inserted to check bug fixes in code that handled debug info intrinsics. These intrinsics are no longer used and now llvm parser simply ignores old .dbg intrinsics from these dead tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90923 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-09 01:46:00 +00:00
Devang Patel
0000fadb00 Revert 90858 90875 and 90805 for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90898 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 23:21:45 +00:00
Evan Cheng
d831cda3e7 - Support inline asm 'w' constraint for 128-bit vector types. 
- Also support the 'q' NEON registers asm code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90894 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 23:06:22 +00:00
Daniel Dunbar
aefd63d415 CMake/lit: Add llvm_{unit_,}site_config parameters, and always pass them when running tests from the project files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90869 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 19:47:36 +00:00
Devang Patel
018b66038c Do not try to push dead variable's debug info into namespace info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90857 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 15:01:35 +00:00
Duncan Sands
7a154cf228 Teach GlobalOpt to delete aliases with internal linkage (after 
forwarding any uses).  GlobalDCE can also do this, but is only
run at -O3.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90850 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 10:10:20 +00:00
Anton Korobeynikov
9aa1ec87b0 Reduce (cmp 0, and_su (foo, bar)) into (bit foo, bar). This saves extra instruction. Patch inspired by Brian Lucas! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90819 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-08 01:03:04 +00:00
Evan Cheng
fe81f96b86 Test case for 90787. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90791 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-07 19:42:22 +00:00
David Greene
e1a2fd5ad4 Use FileCheck and set nounwind on calls. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90790 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-07 19:40:26 +00:00
Dan Gohman
d84ea47b89 Don't enable the post-RA scheduler on x86 except at -O3. In its 
current form, it is too expensive in compile time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90781 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-07 19:04:31 +00:00
Mikhail Glushenkov
8245a1dd53 Implement 'forward_value' and 'forward_transformed_value'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90770 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-07 17:03:05 +00:00
Anton Korobeynikov
7cca606aaa Dynamic stack realignment use of sp register as source/dest register 
in "bic sp, sp, #15" leads to unpredicatble behaviour in Thumb2 mode.
Emit the following code instead:
mov r4, sp
bic r4, r4, #15
mov sp, r4

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90724 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 22:39:50 +00:00
Chris Lattner
08bc2701a2 fix PR5698 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90708 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 17:17:23 +00:00
Chris Lattner
bc9a28dd54 constant fold loads from memcpy's from global constants. This is important 
because clang lowers nontrivial automatic struct/array inits to memcpy from
a global array.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90698 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 05:29:56 +00:00
Chris Lattner
cb9cbc4949 add support for forwarding mem intrinsic values to non-local loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90697 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 04:54:31 +00:00
Chris Lattner
0fce29b9d1 gvn is optimizing this better now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90696 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 04:16:05 +00:00
Chris Lattner
faf815b938 Handle forwarding local memsets to loads. For example, we optimize this: 
short x(short *A) {
  memset(A, 1, sizeof(*A)*100);
  return A[42];
}

to 'return 257' instead of doing the load.  



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90695 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 01:57:02 +00:00
Chris Lattner
f616ee2895 merge two tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90691 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-06 01:47:24 +00:00
Bill Wendling
dc492e0370 Temporarily revert r90502. It was causing the llvm-gcc bootstrap on PPC to fail. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90653 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-05 07:30:23 +00:00
Nick Lewycky
83e8ec73e1 Generalize this optimization to work on equality comparisons between any two 
integers that are constant except for a single bit (the same n-th bit in each).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90646 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-05 05:00:00 +00:00
Dan Gohman
3b9bc04eda Fix this code to use DIScope instead of DICompileUnit, as in r90181. 
Don't print "SrcLine"; just print the filename and line number, which
is obvious enough and more informative.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90631 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-05 00:23:29 +00:00
Dan Gohman
8a3f644b20 Remove now-redundant llvm-as invocations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90626 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-05 00:02:37 +00:00
Bill Wendling
7907ddb6d8 Add testcase for PR4262. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90623 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 23:29:57 +00:00
Bill Wendling
e98be31e7f Temporarily revert r72620 because r72619 was reverted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90619 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 23:16:56 +00:00
Chris Lattner
44a7a380aa Fix PR5551 by not ignoring the top level constantexpr when 
folding a load from constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90545 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 06:29:29 +00:00
Chris Lattner
e4968a4b9d Small and carefully crafted testcase showing a miscompilation by GVN 
that I'm working on.  This is manifesting as a miscompile of 255.vortex
on some targets.  No check lines yet because it fails.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90520 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 02:12:12 +00:00
Jakob Stoklund Olesen
6b74e505be Also attempt trivial coalescing for live intervals that end in a copy. 
The coalescer is supposed to clean these up, but when setting up parameters
for a function call, there may be copies to physregs. If the defining
instruction has been LICM'ed far away, the coalescer won't touch it.

The register allocation hint does not always work - when the register
allocator is backtracking, it clears the hints.

This patch takes care of a few more cases that r90163 missed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90502 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-04 00:16:04 +00:00
Nate Begeman
93e0ed31c5 Don't pull vector sext through both hands of a logical operation, since doing so prevents the fusion of vector sext and setcc into vsetcc. 
Add a testcase for the above transformation.
Fix a bogus use of APInt noticed while tracking this down.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90423 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-03 07:11:29 +00:00
Bob Wilson
324f4f1633 Recognize canonical forms of vector shuffles where the same vector is used for 
both source operands.  In the canonical form, the 2nd operand is changed to an
undef and the shuffle mask is adjusted to only reference elements from the 1st
operand.  Radar 7434842.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90417 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-03 06:40:55 +00:00
Owen Anderson
c9f2027adb Fix this crasher, and add a FIXME for a missed optimization. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90408 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-03 03:43:29 +00:00
Chris Lattner
fd82af0f95 add a failing testcase. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90380 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-03 01:46:18 +00:00
Chris Lattner
e568fa2d29 fix PR5673 by being more careful about pointers to functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90369 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-03 01:05:45 +00:00
Bill Wendling
3627b48110 Remove unnecessary check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90352 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-02 22:02:20 +00:00
Owen Anderson
9ff5a23186 Cleanup/remove some parts of the lifetime region handling code in memdep and GVN, 
per Chris' comments.  Adjust testcases to match.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90304 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-02 07:35:19 +00:00
Chris Lattner
edc436bbf4 merge sext-2 into sext.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90293 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-02 05:34:35 +00:00
Chris Lattner
8bdcb25072 rename test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90292 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-02 05:32:33 +00:00
Chris Lattner
7eb4fa6dcb filecheckize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90291 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-02 05:32:16 +00:00
Mon P Wang
69a008075b Fixed an assertion failure for tracking sext of a vector of integers 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90290 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-02 04:59:58 +00:00
Evan Cheng
9836a26da3 Fix PR5391: support early clobber physical register def tied with a use (ewwww) 
- A valno should be set HasRedefByEC if there is an early clobber def in the middle of its live ranges. It should not be set if the def of the valno is defined by an early clobber.
- If a physical register def is tied to an use and it's an early clobber, it just means the HasRedefByEC is set since it's still one continuous live range.
- Add a couple of missing checks for HasRedefByEC in the coalescer. In general, it should not coalesce a vr with a physical register if the physical register has a early clobber def somewhere. This is overly conservative but that's the price for using such a nasty inline asm "feature".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90269 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 22:25:00 +00:00
Jim Grosbach
2a37b9c750 test case for IV-Users simplification loop improvement 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90260 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 21:53:51 +00:00
Devang Patel
c09ddc1c79 Clear function specific containers while processing end of a function, even if DW_TAG_subprogram for current function is not found. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90247 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 18:13:48 +00:00
Chris Lattner
49f5389aae minimize this a bit more. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90216 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 07:30:01 +00:00
Chris Lattner
156cf873e5 merge 2009-11-29-ReverseMap.ll into crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90212 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 06:22:10 +00:00
Chris Lattner
46875c0bfb fix PR5640 by tracking whether a block is the header of a loop more 
precisely, which prevents us from infinitely peeling the loop.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90211 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 06:04:43 +00:00
Jakob Stoklund Olesen
579d6d9fe3 Use CFG connectedness as a secondary sort key when deciding the order of copy coalescing. 
This means that well connected blocks are copy coalesced before the less connected blocks. Connected blocks are more difficult to
coalesce because intervals are more complicated, so handling them first gives a greater chance of success.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90194 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 03:03:00 +00:00
Dan Gohman
0488ecdd16 Add a comment about A[i+(j+1)]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90185 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 01:38:10 +00:00
Evan Cheng
a4025df42d Fix PR5614: parts of a physical register def may be killed the rest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90180 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 00:44:45 +00:00
Devang Patel
d188dba149 Test case for r90175. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90176 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-12-01 00:13:06 +00:00
Jakob Stoklund Olesen
ce7a663140 New virtual registers created for spill intervals should inherit allocation hints from the original register. 
This helps us avoid silly copies when rematting values that are copied to a physical register:

leaq	_.str44(%rip), %rcx
movq	%rcx, %rsi
call	_strcmp

becomes:

leaq	_.str44(%rip), %rsi
call	_strcmp

The coalescer will not touch the movq because that would tie down the physical register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90163 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-30 22:55:54 +00:00
Bill Wendling
b25846e180 Debug info is disabled on PPC Darwin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90160 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-30 22:23:29 +00:00
Nick Lewycky
526bc31cee Add a testcase for the current llvm-gcc build failure. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90112 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-30 07:02:18 +00:00
Mon P Wang
8b6a20accd Add test case for r90108 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90109 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-30 02:42:27 +00:00
Nick Lewycky
d11ba72db9 Fix this test on 64-bit systems which seem to use i64 for gep indices sometimes 
while 32-bit gcc uses i32.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90106 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-30 02:23:57 +00:00
Nick Lewycky
b2944bcbe8 Commit r90099 made LLVM simplify one of these constant expressions a little 
more. Update the syntax we're checking for and filecheckize it too.

This will fix the selfhost buildbots but will 'break' the others (sigh) because
they're still linked against older LLVM which is emitting less optimized IR.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90104 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-30 00:38:56 +00:00
Nick Lewycky
fac554a131 Teach ConstantFolding to do a better job when folding gep(bitcast). 
This permits the devirtualization of llvm.org/PR3100#c9 when compiled by clang.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90099 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-29 21:40:55 +00:00
Chris Lattner
cd188e9665 add testcases for the foo_with_overflow op xforms added recently and 
fix bugs exposed by the tests.  Testcases from Alastair Lynn!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90056 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-29 02:57:29 +00:00
Chris Lattner
ff0a883fe9 add PR# 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90049 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-29 01:28:58 +00:00
Chris Lattner
78c6d4fa9c Add a testcase for: 
void test(int N, double* G) {
  long j;
  for (j = 1; j < N - 1; j++)
      G[j] = G[j] + G[j+1] + G[j-1];
}

which we now compile to one load in the loop:

LBB1_2:                                                     ## %bb
	movsd	16(%rsi,%rax,8), %xmm2
	incq	%rdx
	addsd	%xmm2, %xmm1
	addsd	%xmm1, %xmm0
	movapd	%xmm2, %xmm1
	movsd	%xmm0, 8(%rsi,%rax,8)
	incq	%rax
	cmpq	%rcx, %rax
	jne	LBB1_2

instead of:

LBB1_2:                                                     ## %bb
	movsd	8(%rsi,%rax,8), %xmm0
	addsd	16(%rsi,%rax,8), %xmm0
	addsd	(%rsi,%rax,8), %xmm0
	movsd	%xmm0, 8(%rsi,%rax,8)
	incq	%rax
	cmpq	%rcx, %rax
	jne	LBB1_2



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90048 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-29 01:15:43 +00:00
Chris Lattner
9fed3c2835 add a testcase for 
void test9(int N, double* G) {
  long j;
  for (j = 1; j < N - 1; j++)
      G[j+1] = G[j] + G[j+1];
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90047 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-29 01:04:40 +00:00
Chris Lattner
3f40e23392 Implement PR5634. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90046 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-29 00:51:17 +00:00
Nick Lewycky
d801c10de6 Teach memdep to look for memory use intrinsics during dependency queries. Fixes 
PR5574.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90045 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-28 21:27:49 +00:00
Chris Lattner
0c264b16b0 reenable load address insertion in load pre. This allows us to 
handle cases like this:
void test(int N, double* G) {
  long j;
  for (j = 1; j < N - 1; j++)
      G[j+1] = G[j] + G[j+1];
}

where G[1] isn't live into the loop.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90041 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-28 16:08:18 +00:00
Chris Lattner
ab9530ee5d implement a FIXME: limit the depth that DecomposeGEPExpression goes the same 
way that getUnderlyingObject does it. 

This fixes the 'DecomposeGEPExpression and getUnderlyingObject disagree!' 
assertion on sqlite3.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90038 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-28 15:12:41 +00:00
Chris Lattner
971fd57f7d disable value insertion for now, I need to figure out how 
to inform GVN about the newly inserted values.  This fixes 
PR5631.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90022 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 22:50:07 +00:00
Chris Lattner
253be4ddb2 I accidentally implemented this :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90014 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 19:56:00 +00:00
Chris Lattner
11c6bab704 add support for recursive phi translation and phi 
translation of add with immediate.  This allows us
to optimize this function:

void test(int N, double* G) {
  long j;
  G[1] = 1;
    for (j = 1; j < N - 1; j++)
        G[j+1] = G[j] + G[j+1];
}

to only do one load every iteration of the loop.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90013 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 19:11:31 +00:00
Chris Lattner
9a5c22cc5e add two simple test cases we now optimize (to one load in the loop each) and one we don't (corresponding to the fixme I added yesterday). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90012 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 18:08:30 +00:00
Chris Lattner
8976e5950f fix PR5436 by making the 'simple' case of SRoA not promote out of range 
array indexes.  The "complex" case of SRoA still handles them, and correctly.

This fixes a weirdness where we'd correctly avoid transforming A[0][42] if
the 42 was too large, but we'd only do it if it was one gep, not two separate
ones.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90007 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 16:37:41 +00:00
Chris Lattner
fc159fd741 filecheckize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90006 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 16:31:59 +00:00
Duncan Sands
fb245e2d46 While this test is testing a problem in the generic part of codegen, 
the problem only shows for msp430 and pic16 which is why it specifies
them using -march.  But it is wrong to put such tests in CodeGen/Generic,
since not everyone builds these targets.  Put a copy of the test in each
of the target test directories.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90005 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 16:04:14 +00:00
Chris Lattner
616613d7a4 teach GVN's load PRE to insert computations of the address in predecessors 
where it is not available.  It's unclear how to get this inserted 
computation into GVN's scalar availability sets, Owen, help? :)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89997 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 08:25:10 +00:00
Chris Lattner
d280d85791 add some tests for memdep phi translation + PRE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89996 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 06:42:42 +00:00
Chris Lattner
852dfbdf02 this test is failing, and is expected to. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89995 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 06:36:28 +00:00
Chris Lattner
8dca876ab7 filecheckize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89994 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 06:33:09 +00:00
Chris Lattner
9b15d60c7a rename test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89993 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 06:31:55 +00:00
Chris Lattner
62deff066c Fix phi translation in load PRE to agree with the phi 
translation done by memdep, and reenable gep translation 
again.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89992 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 06:31:14 +00:00
Chris Lattner
b99be5beac redisable this, my bootstrap worked because it wasn't an optimized build, whoops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89991 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 05:53:01 +00:00
Chris Lattner
cca130bb66 try again. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89990 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 05:19:56 +00:00
Chris Lattner
518c988ae9 this is causing buildbot failures, disable for now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89985 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 01:52:22 +00:00
Chris Lattner
e19e4baf3b teach phi translation of GEPs to simplify geps like 'gep x, 0'. 
This allows us to compile the example from PR5313 into:

LBB1_2:                                                     ## %bb
	incl	%ecx
	movb	%al, (%rsi)
	movslq	%ecx, %rax
	movb	(%rdi,%rax), %al
	testb	%al, %al
	jne	LBB1_2

instead of:

LBB1_2:                                                     ## %bb
	movslq	%eax, %rcx
	incl	%eax
	movb	(%rdi,%rcx), %cl
	movb	%cl, (%rsi)
	movslq	%eax, %rcx
	cmpb	$0, (%rdi,%rcx)
	jne	LBB1_2



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89981 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 00:34:38 +00:00
Chris Lattner
304076268a teach memdep to do trivial PHI translation of GEPs. More to 
come.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89979 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-27 00:07:37 +00:00
Chris Lattner
cc3d0eb483 Teach memdep to phi translate bitcasts. This allows us to compile 
the example in GCC PR16799 to:

LBB1_2:                                                     ## %bb1
	movl	%eax, %eax
	subq	%rax, %rdi
	movq	%rdi, (%rcx)
	movl	(%rdi), %eax
	testl	%eax, %eax
	je	LBB1_2

instead of:

LBB1_2:                                                     ## %bb1
	movl	(%rdi), %ecx
	subq	%rcx, %rdi
	movq	%rdi, (%rax)
	cmpl	$0, (%rdi)
	je	LBB1_2



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89978 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 23:41:07 +00:00
Chris Lattner
38028653a9 convert to filecheck 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89977 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 23:32:59 +00:00
Chris Lattner
21f83a2f95 Fix PR5471 by removing an instcombine xform. Some pieces of the code 
generates store to undef and some generates store to null as the idiom
for undefined behavior.  Since simplifycfg zaps both, don't remove the
undefined behavior in instcombine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89971 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 22:04:42 +00:00
Chris Lattner
3c47f2de90 @test9 is a testcase for r89958. Before 89958, we misanalyzed the 
first expression as P+4+4*i which we considered to possibly alias
P+4*j.  Now we correctly analyze the former one as P+1+4*i.

@test10 is a sanity test that verfies that we know that P+4+4*i != P+4*i.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89960 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 19:25:46 +00:00
Chris Lattner
1ce0eaa25f Implement PR1143 (at -m64) by making basicaa look through extensions. We 
previously already handled it at -m32 because there were no i32->i64 
extensions for addressing.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89959 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 18:53:33 +00:00
Chris Lattner
fa3966881f teach GetLinearExpression to be a bit more aggressive. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89955 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 17:00:01 +00:00
Chris Lattner
856a72cf38 update status of this. basicaa is much improved now, 
only missing the one form (in this testcase).  Dan, do you
consider this example to be important?



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89953 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 16:42:00 +00:00
Chris Lattner
5d5261c819 Teach basicaa that x|c == x+c when the c bits of x are clear. This 
allows us to compile the example in readme.txt into:

LBB1_1:                                                     ## %bb
	movl	4(%rdx,%rax), %ecx
	movl	%ecx, %esi
	imull	(%rdx,%rax), %esi
	imull	%esi, %ecx
	movl	%esi, 8(%rdx,%rax)
	imull	%ecx, %esi
	movl	%ecx, 12(%rdx,%rax)
	movl	%esi, 16(%rdx,%rax)
	imull	%ecx, %esi
	movl	%esi, 20(%rdx,%rax)
	addq	$16, %rax
	cmpq	$4000, %rax
	jne	LBB1_1

instead of:

LBB1_1: 
	movl	(%rdx,%rax), %ecx
	imull	4(%rdx,%rax), %ecx
	movl	%ecx, 8(%rdx,%rax)
	imull	4(%rdx,%rax), %ecx
	movl	%ecx, 12(%rdx,%rax)
	imull	8(%rdx,%rax), %ecx
	movl	%ecx, 16(%rdx,%rax)
	imull	12(%rdx,%rax), %ecx
	movl	%ecx, 20(%rdx,%rax)
	addq	$16, %rax
	cmpq	$4000, %rax
	jne	LBB1_1

GCC (4.2) doesn't seem to be able to eliminate the loads in this 
testcase either, it generates:

L2:
	movl	(%rdx), %eax
	imull	4(%rdx), %eax
	movl	%eax, 8(%rdx)
	imull	4(%rdx), %eax
	movl	%eax, 12(%rdx)
	imull	8(%rdx), %eax
	movl	%eax, 16(%rdx)
	imull	12(%rdx), %eax
	movl	%eax, 20(%rdx)
	addl	$4, %ecx
	addq	$16, %rdx
	cmpl	$1002, %ecx
	jne	L2




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89952 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 16:26:43 +00:00
Chris Lattner
f6ac4d9dad teach basicaa that A[i] != A[i+1]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89951 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 16:18:10 +00:00
Chris Lattner
61d2462400 rename test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89950 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 16:08:41 +00:00
Chris Lattner
d84eb911a9 Change the other half of aliasGEP (which handles GEP differencing) to use DecomposeGEPExpression. This dramatically simplifies and shrinks the code by eliminating the horrible CheckGEPInstructions method, fixes a miscompilation (@test3) and makes the code more aggressive. In particular, we now handle the @test4 case, which is reduced from the SmallPtrSet constructor. Missing this caused us to emit a variable length memset instead of a fixed size one. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89922 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 02:17:34 +00:00
Chris Lattner
4b7d0d9727 add a new random feature test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89921 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 02:16:28 +00:00
Evan Cheng
695b9f3d5e Test for 89905. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89906 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-26 00:35:01 +00:00
Dale Johannesen
36ccdd49f5 Test for llvm-gcc checkin 89898. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89899 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-25 23:50:09 +00:00
Evan Cheng
e7c9195706 ProcessImplicitDefs should watch out for invalidated iterator and extra implicit operands on copies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89880 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-25 21:13:39 +00:00
Bruno Cardoso Lopes
d71cebf575 Support PIC loading of constant pool entries 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89863 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-25 12:17:58 +00:00
Edward O'Callaghan
25798439da Reverting patch in revision 89758, initial attempt at fixing PR5373 has proven to be bogus. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89844 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-25 05:38:41 +00:00
Dale Johannesen
f7801b493e Do not store R31 into the caller's link area on PPC. 
This violates the ABI (that area is "reserved"), and
while it is safe if all code is generated with current
compilers, there is some very old code around that uses
that slot for something else, and breaks if it is stored
into.  Adjust testcases looking for current behavior.
I've verified that the stack frame size is right in all
testcases, whether it changed or not.  7311323.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89811 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-24 22:59:02 +00:00
Edward O'Callaghan
de8d3b73c8 Fix for PR5373, Credit to Jakub Staszak. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89758 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-24 11:51:52 +00:00
Evan Cheng
d7f0810c93 Enable predication of NEON instructions in Thumb2 mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89748 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-24 08:06:15 +00:00
Anton Korobeynikov
5cdc3a949a Materialize global addresses via movt/movw pair, this is always better 
than doing the same via constpool:
1. Load from constpool costs 3 cycles on A9, movt/movw pair - just 2.
2. Load from constpool might stall up to 300 cycles due to cache miss.
3. Movt/movw does not use load/store unit.
4. Less constpool entries => better compiler performance.

This is only enabled on ELF systems, since darwin does not have needed
relocations (yet).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89720 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-24 00:44:37 +00:00
Jim Grosbach
77b02beb1f move fconst[sd] to UAL. <rdar://7414913> 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89700 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 21:08:25 +00:00
Jim Grosbach
bbf56bb37b update test for 89694 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89695 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 20:39:53 +00:00
Dan Gohman
01b97dd01e Make ConstantFoldConstantExpression recursively visit the entire 
ConstantExpr, not just the top-level operator. This allows it to
fold many more constants.

Also, make GlobalOpt call ConstantFoldConstantExpression on
GlobalVariable initializers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89659 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 16:22:21 +00:00
Dan Gohman
8f3817f505 Fix a use of an invalidated iterator in the case where there are multiple 
adjacent uses of a dead basic block from the same user. This fixes PR5596.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89658 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 16:13:39 +00:00
Nick Lewycky
55bd8bd6eb Reapply r88830 with a bugfix: this transform only applies to icmp eq/ne. This 
fixes part of PR5438.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89639 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-23 03:17:33 +00:00
Chris Lattner
4723303c97 remove a silly condition that doesn't make a lot of sense anymore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89601 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 16:15:59 +00:00
Edward O'Callaghan
18d18b71d5 Miss two, PR5307. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89596 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 15:35:28 +00:00
Edward O'Callaghan
f4a93dd70e Convert Thumb2 tests to FileCheck for PR5307. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89595 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 15:18:27 +00:00
Benjamin Kramer
bfd987ba57 Turns out stuff gets allocated to different registers depending on the subtarget. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89594 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 15:15:52 +00:00
Edward O'Callaghan
11cc4fab52 Convert ARM tests to FileCheck for PR5307. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89593 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 14:23:33 +00:00
Benjamin Kramer
3ebd44d20f Convert test to FileCheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89589 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 13:16:36 +00:00
Edward O'Callaghan
de9b6b1cd5 Forgot to alter RUN line when converting to FileCheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89588 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 13:09:48 +00:00
Edward O'Callaghan
85d1aab444 Fix for bad FileCheck converts in revision 89584. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89586 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 12:50:05 +00:00
Edward O'Callaghan
81fff07daf Convert a few tests to FileCheck for PR5307. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89584 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 11:45:44 +00:00
Bob Wilson
2214dc0764 Fix pr5470. Tablegen handles template arguments by temporarily setting their 
values, resolving references to them, and then removing the definitions.
If a template argument is set to an undefined value, we need to resolve
references to that argument to an explicit undefined value.  The current code
leaves the reference to the template argument as it is, which causes an
assertion failure later when the definition of the template argument is
removed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89581 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-22 03:58:57 +00:00
Jim Grosbach
21ce2e3c74 Revert 89562. We're being sneakier than I was giving us credit for, and this 
isn't necessary.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89568 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 23:34:09 +00:00
Jim Grosbach
f3b33d0b2a Darwin requires a frame pointer for all non-leaf functions to support correct 
backtraces.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89562 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 21:40:08 +00:00
Jakob Stoklund Olesen
b99b63c2e5 Don't leave temporary files in the test directory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89531 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 02:05:31 +00:00
Dale Johannesen
5b8bce11d6 When generating a vector the really slow way, via loads 
and stores, handle the case where the element size is not
a valid target type correctly (PPC).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89521 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-21 00:53:23 +00:00
Evan Cheng
c26abd9487 Enable hoisting load from constant memories. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89510 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 23:31:34 +00:00
Sean Callanan
b9e6b34e1e Recommitting PALIGNR shift width fixes. 
Thanks to Daniel Dunbar for fixing clang intrinsics:
  http://llvm.org/viewvc/llvm-project?view=rev&revision=89499


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89500 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 22:28:42 +00:00
Dale Johannesen
5ca124691b Remove an incorrect overaggressive optimization 
(PPC specific).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89496 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 22:16:40 +00:00
Sean Callanan
1bbf6d1a6f Reverting PALIGNR fix until I figure out how this 
broke the Clang testsuite.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89495 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 22:09:28 +00:00
Sean Callanan
201dfa7432 Fixed PALIGNR to take 8-bit rotations in all cases. 
Also fixed the corresponding testcase, and the PALIGNR
  intrinsic (tested for correctness with llvm-gcc).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89491 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 21:40:28 +00:00
Dan Gohman
a58a04921d Make Loop::getLoopLatch() work on loops which don't have preheaders, as 
it may be used in contexts where preheader insertion may have failed due
to an indirectbr.

Make LoopSimplify's LoopSimplify::SeparateNestedLoop properly fail in
the case that it would require splitting an indirectbr edge.

These fix PR5502.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89484 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 20:51:18 +00:00
Dan Gohman
6a2392131e Fix IPSCCP's code for deleting dead blocks to tolerate outstanding 
blockaddress users. This fixes PR5569.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89483 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 20:19:14 +00:00
Evan Cheng
4aedb61d03 Remat VLDRD from constpool. Clean up some instruction property specifications. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89478 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 19:57:15 +00:00
Duncan Sands
c088ae8b84 Fix PR5558, which was caused by a wrong fix for PR3393 (see commit 63048), 
which was an expensive checks failure due to a bug in the checking.  This
patch in essence reverts the original fix for PR3393, and refixes it by a
tweak to the way expensive checking is done.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89454 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 10:45:10 +00:00
Benjamin Kramer
5da15364b9 Try to work around grep's "Binary file (standard input) matches" complaints seen 
on ppc buildbot.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89452 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 09:53:25 +00:00
Daniel Dunbar
f6ed7824c5 Fix -march= name for x86-64. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89445 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 02:52:08 +00:00
Dan Gohman
b4afb137ef Fix fast-isel to avoid selecting the return instruction if a 
tail call has been encountered.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89444 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 02:51:26 +00:00
Evan Cheng
9b82425cb0 Also CSE non-pic load from constant pools. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89440 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 02:10:27 +00:00
Dan Gohman
ac146657fc Teach getSmallConstantTripMultiple about Shl operators. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89426 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 01:09:34 +00:00
Evan Cheng
9ef4835bd8 Fix codegen of conditional move of immediates. We were not making use of the immediate forms of cmov instructions at all. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89423 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 00:54:03 +00:00
Bill Wendling
0fe60c79fb Specify proper arch and triple for 64-bit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89418 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 00:40:21 +00:00
Bill Wendling
b3fa7e4e40 Testcase for r89415. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89417 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-20 00:32:16 +00:00
Dan Gohman
f94b5edc45 Extend CaptureTracking to indicate when a value is never stored, even 
if it is not ultimately captured. Teach BasicAliasAnalysis that a 
local object address which does not escape and is never stored does
not alias with a value resulting from a load.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89398 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 21:57:48 +00:00
Dan Gohman
dab249b3b7 Enable hoisting of loads from constant memory by default. In cases where 
they are lowered to instruction sequences more complex than a simple
load, such that CodeGen cannot rematerialize them, a reload from a
spill slot is likely to be cheaper than the complex sequence.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89374 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 19:00:10 +00:00
Daniel Dunbar
2b86caf05b Unbreak test, Bruno please check. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89329 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 07:18:49 +00:00
Evan Cheng
2ef9c8a43d More consistent thumb1 asm printing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89328 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 06:57:41 +00:00
Evan Cheng
5b397c93a5 Shrink ldr / str [sp, imm0-1024] to 16-bit instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89326 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 06:32:27 +00:00
Bruno Cardoso Lopes
2045c47aff - Add sugregister logic to handle f64=(f32,f32). 
- Support mips1 like load/store of doubles:

Instead of:
  sdc $f0, X($3)
Generate:
  swc $f0, X($3)
  swc $f1, X+4($3)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89322 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 06:06:13 +00:00
Bill Wendling
77bd09b650 Test from Dhrystone to make sure that we're not emitting an aligned load for a 
string that's aligned at 8-bytes instead of 16-bytes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89295 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-19 01:33:57 +00:00
Bob Wilson
41a0456a3c Fix buildbots. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89274 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 23:30:38 +00:00
Richard Osborne
bea7df56ce Add XCore support for indirectbr / blockaddress. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89273 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 23:20:42 +00:00
Bob Wilson
60f34b9fb0 Tail duplication still needs to iterate. Duplicating new instructions onto 
the tail of a block may make that block a new candidate for duplication.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89264 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 22:52:37 +00:00
Bill Wendling
9b5928b989 Not all ASM has # for comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89250 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 21:54:13 +00:00
Jakob Stoklund Olesen
0b25ae1afb Fix PR5300. 
When TwoAddressInstructionPass deletes a dead instruction, make sure that all
register kills are accounted for. The 2-addr register does not get special
treatment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89246 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 21:33:35 +00:00
Jakob Stoklund Olesen
5052c1547e Fix inverted test and add testcase from failing self-host. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89167 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-18 00:02:18 +00:00
Jakob Stoklund Olesen
6c8a0715c4 Remove fragile test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@89150 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-17 21:52:40 +00:00