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cb62477ec2
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21287 Commits

Author SHA1 Message Date
Chris Lattner
cb62477ec2 add some missing flags. 
llvm-svn: 45859
 2008-01-11 06:59:07 +00:00
Chris Lattner
08a33a998a add some notes. 
llvm-svn: 45854
 2008-01-11 06:17:47 +00:00
Chris Lattner
bf51fecdc4 When inlining a functino with a byval argument, make an explicit 
copy of it in case the callee modifies the struct.

llvm-svn: 45853
 2008-01-11 06:09:30 +00:00
Evan Cheng
18c4155e7d A couple of obvious off-by-one bugs. 
llvm-svn: 45852
 2008-01-11 03:07:46 +00:00
Scott Michel
1e9496e4d4 More CellSPU refinement and progress: 
- Cleaned up custom load/store logic, common code is now shared [see note
  below], cleaned up address modes

- More test cases: various intrinsics, structure element access (load/store
  test), updated target data strings, indirect function calls.

Note: This patch contains a refactoring of the LoadSDNode and StoreSDNode
structures: they now share a common base class, LSBaseSDNode, that
provides an interface to their common functionality. There is some hackery
to access the proper operand depending on the derived class; otherwise,
to do a proper job would require finding and rearranging the SDOperands
sent to StoreSDNode's constructor. The current refactor errs on the
side of being conservatively and backwardly compatible while providing
functionality that reduces redundant code for targets where loads and
stores are custom-lowered.

llvm-svn: 45851
 2008-01-11 02:53:15 +00:00
Evan Cheng
63753b7be7 Allow parameter attributes on varargs function parameters. 
llvm-svn: 45850
 2008-01-11 02:13:09 +00:00
Dale Johannesen
83852e3451 Weak zeroes don't go in bss on Darwin. 
llvm-svn: 45849
 2008-01-11 01:59:45 +00:00
Dale Johannesen
31afe330e4 Weak things initialized to 0 don't go in bss on Darwin. 
Cosmetic changes to spacing to match gcc (some dejagnu
tests actually care).

llvm-svn: 45848
 2008-01-11 00:54:37 +00:00
Chris Lattner
bfffa4f21e Simplify the side effect stuff a bit more and make licm/sinking 
both work right according to the new flags.

This removes the TII::isReallySideEffectFree predicate, and adds
TII::isInvariantLoad. 

It removes NeverHasSideEffects+MayHaveSideEffects and adds
UnmodeledSideEffects as machine instr flags.  Now the clients
can decide everything they need.

I think isRematerializable can be implemented in terms of the
flags we have now, though I will let others tackle that.

llvm-svn: 45843
 2008-01-10 23:08:24 +00:00
Chris Lattner
e5b817779c Clamp down on sinking of lots of instructions. 
llvm-svn: 45841
 2008-01-10 22:35:15 +00:00
Chris Lattner
48c54909dc IMPLICIT_USE and IMPLICIT_DEF are dead, remove them. 
llvm-svn: 45838
 2008-01-10 19:27:54 +00:00
Chris Lattner
3c2a517080 add a note 
llvm-svn: 45837
 2008-01-10 18:25:41 +00:00
Duncan Sands
2c89976416 Output sinl for a long double FSIN node, not sin. 
Likewise fix up a bunch of other libcalls.  While
there I remove NEG_F32 and NEG_F64 since they are
not used anywhere.  This fixes 9 Ada ACATS failures.

llvm-svn: 45833
 2008-01-10 10:28:30 +00:00
Evan Cheng
444d24972f Only remat loads from immutable stack slots. 
llvm-svn: 45831
 2008-01-10 08:24:38 +00:00
Evan Cheng
6e03db7604 Simplify some code. 
llvm-svn: 45830
 2008-01-10 08:22:10 +00:00
Chris Lattner
9d7971791b Start inferring side effect information more aggressively, and fix many bugs in the 
x86 backend where instructions were not marked maystore/mayload, and perf issues where
instructions were not marked neverHasSideEffects.  It would be really nice if we could
write patterns for copy instructions.

I have audited all the x86 instructions down to MOVDQAmr.  The flags on others and on
other targets are probably not right in all cases, but no clients currently use this
info that are enabled by default.

llvm-svn: 45829
 2008-01-10 07:59:24 +00:00
Chris Lattner
7ceba534ba rename X86InstrX86-64.td -> X86Instr64bit.td 
llvm-svn: 45826
 2008-01-10 05:50:42 +00:00
Chris Lattner
dee5700386 add SDNPSideEffect node property declaration 
llvm-svn: 45825
 2008-01-10 05:48:23 +00:00
Chris Lattner
6ad01a9965 remove explicit sets of 'neverHasSideEffects' that can now be 
inferred from the instr patterns.

llvm-svn: 45824
 2008-01-10 05:45:39 +00:00
Chris Lattner
9b4f2b2316 get def use info more correct. 
llvm-svn: 45821
 2008-01-10 05:12:37 +00:00
Chris Lattner
3aa2fc1b5c add SDNPMayLoad to the 'load' sdnode definition. This is enough to get all the x86 
instructions (with patterns) that load memory marked, for example.

llvm-svn: 45818
 2008-01-10 04:44:32 +00:00
Chris Lattner
8e486a6b25 verify that the frame index is immutable before remat'ing (still disabled) 
or being side-effect free.

llvm-svn: 45816
 2008-01-10 04:16:31 +00:00
Owen Anderson
59c3242247 Don't use LiveVariables::VarInfo::DefInst. 
llvm-svn: 45815
 2008-01-10 03:12:54 +00:00
Evan Cheng
8846740401 Mark byval parameter stack objects mutable for now. 
llvm-svn: 45813
 2008-01-10 02:24:25 +00:00
Dale Johannesen
fdd4b3846f Emit unused EH frames for weak definitions on Darwin, 
because assembler/linker can't cope with weak absolutes.
PR 1880.

llvm-svn: 45811
 2008-01-10 02:03:30 +00:00
Owen Anderson
a8f32828c8 Get rid of all uses of LiveVariables::VarInfo::DefInst in favor of the equivalent API from 
MachineRegisterInfo.  Once all clients are switched over, the former will be going away.

llvm-svn: 45805
 2008-01-10 01:36:43 +00:00
Owen Anderson
e2b710013f Add more comments explaining the basics of how the decision of when to rename and when to insert 
copies is made.

llvm-svn: 45799
 2008-01-10 00:47:01 +00:00
Evan Cheng
f6fd56d085 Do not use the stack pointer directly, issue a copyfromreg instead. Otherwise we can end up with something like ADD32ri %esp, x which two-address pass won't like. 
llvm-svn: 45798
 2008-01-10 00:37:26 +00:00
Owen Anderson
a0e5b9a317 Get rid of the isKillInst predicate. LiveVariables already provides this information. 
llvm-svn: 45797
 2008-01-10 00:33:11 +00:00
Chris Lattner
b02074514e Fix PR1845 and rdar://5676945. Generic vectors smaller 
than hardware supported type will be scalarized, so we
can infer their alignment from that info.

We now codegen pr1845 into:

_boolVectorSelect:
	lbz r2, 0(r3)
	stb r2, -16(r1)
	blr 

llvm-svn: 45796
 2008-01-10 00:30:57 +00:00
Evan Cheng
7581a2a634 Remove comments that do not correspond to anything after recent refactoring. 
llvm-svn: 45792
 2008-01-10 00:09:10 +00:00
Owen Anderson
b5be87349c Copies need to be inserted before the first terminator, not at the end of the block. 
llvm-svn: 45791
 2008-01-10 00:01:41 +00:00
Evan Cheng
ba0214a6cb Special copy SUnit's do not have SDNode's. 
llvm-svn: 45787
 2008-01-09 23:01:55 +00:00
Owen Anderson
62bb891e23 Clean up StrongPHIElimination a bit, and add some more comments to the internal structures. There's 
still more work to do on this front.

llvm-svn: 45783
 2008-01-09 22:40:54 +00:00
Duncan Sands
e97a9a373a Fix compile failures with g++-4.3. 
llvm-svn: 45781
 2008-01-09 19:42:09 +00:00
Owen Anderson
9555739636 StrongPHIElim: Now with even fewer trivial bugs! 
llvm-svn: 45775
 2008-01-09 10:41:39 +00:00
Owen Anderson
c937ae34a5 Fix an infinite recursion bug in InsertCopies. 
llvm-svn: 45774
 2008-01-09 10:32:30 +00:00
Owen Anderson
01e1f23391 Fix some simple bugs. StrongPHIElimination now does not crash on 164.gzip. 
llvm-svn: 45773
 2008-01-09 06:19:05 +00:00
Chris Lattner
c465555fe6 add a testcase 
llvm-svn: 45768
 2008-01-09 00:37:18 +00:00
Chris Lattner
4253eeaeb3 add a note 
llvm-svn: 45766
 2008-01-09 00:17:57 +00:00
Chris Lattner
c93ad7d569 Make load->store deletion a bit smarter. This allows us to compile this: 
void test(long long *P) { *P ^= 1; }

into just:

_test:
	movl	4(%esp), %eax
	xorl	$1, (%eax)
	ret

instead of code like this:

_test:
	movl	4(%esp), %ecx
        xorl    $1, (%ecx)
	movl	4(%ecx), %edx
	movl	%edx, 4(%ecx)
	ret

llvm-svn: 45762
 2008-01-08 23:08:06 +00:00
Owen Anderson
3d5485728a Rename registers that do not need copies. 
llvm-svn: 45759
 2008-01-08 21:54:52 +00:00
Duncan Sands
6f28b87039 Use size_t to store Pos, avoid truncating value 
on 64-bit builds.  Analysis and original patch
by Török Edwin.  Code audit found another place
with the same problem, also fixed here.

llvm-svn: 45746
 2008-01-08 10:06:15 +00:00
Chris Lattner
67f581b344 Implement PR1795, an instcombine hack for forming GEPs with integer pointer arithmetic. 
llvm-svn: 45745
 2008-01-08 07:23:51 +00:00
Chris Lattner
cafc567fb7 Finally implement correct ordered comparisons for PPC, even though 
the code generated is not wonderful.  This turns a miscompilation into
a code quality bug (noted in the ppc readme).  This fixes PR642, which
is over 2 years old (!).  Nate, please review this.

llvm-svn: 45742
 2008-01-08 06:46:30 +00:00
Owen Anderson
23abe71f4d Actually insert copies now! 
llvm-svn: 45738
 2008-01-08 05:16:15 +00:00
Evan Cheng
e7fd8ad117 Minor fix to enable x86-64 pic jit (still fails for other reasons). 
llvm-svn: 45734
 2008-01-08 02:07:10 +00:00
Evan Cheng
165d39b8e4 Fix a x86-64 static codegen bug. This fixes a lot of x86-64 jit failures. 
llvm-svn: 45733
 2008-01-08 02:06:11 +00:00
Bill Wendling
e859abc363 Silence warning about loss of precision. 
llvm-svn: 45731
 2008-01-08 00:52:29 +00:00
Evan Cheng
9de4f35e9f Only mark instructions that load a single value without extension as isSimpleLoad = 1. 
llvm-svn: 45727
 2008-01-07 23:56:57 +00:00