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5d16396a33
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28682 Commits

Author SHA1 Message Date
Evan Cheng
5d16396a33 Avoid infinite looping in AllGlobalLoadUsesSimpleEnoughForHeapSRA(). This can happen when PHI uses are recursively dependent on each other. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72710 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-02 00:56:07 +00:00
Dale Johannesen
ca46fdd284 Add missing file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72709 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 23:48:58 +00:00
Dale Johannesen
4150d83abe Make the implicit inputs and outputs of target-independent 
ADDC/ADDE use MVT::i1 (later, whatever it gets legalized to)
instead of MVT::Flag.  Remove CARRY_FALSE in favor of 0; adjust
all target-independent code to use this format.

Most targets will still produce a Flag-setting target-dependent
version when selection is done.  X86 is converted to use i32
instead, which means TableGen needs to produce different code
in xxxGenDAGISel.inc.  This keys off the new supportsHasI1 bit
in xxxInstrInfo, currently set only for X86; in principle this
is temporary and should go away when all other targets have
been converted.  All relevant X86 instruction patterns are
modified to represent setting and using EFLAGS explicitly.  The
same can be done on other targets.

The immediate behavior change is that an ADC/ADD pair are no
longer tightly coupled in the X86 scheduler; they can be
separated by instructions that don't clobber the flags (MOV).
I will soon add some peephole optimizations based on using
other instructions that set the flags to feed into ADC.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72707 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 23:27:20 +00:00
Dale Johannesen
8313899851 Comment grammaro/clarification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72706 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 23:13:42 +00:00
Dale Johannesen
69bbb4cd39 Trailing whitespace. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72705 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 23:12:52 +00:00
Bill Wendling
8fff19ba55 Accidental commit. This isn't ready for prime time just yet. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72699 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 20:18:46 +00:00
Anton Korobeynikov
70459bef9c Implement review feedback. Make thumb2 'normal' subtarget feature 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72698 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 20:00:48 +00:00
Bruno Cardoso Lopes
434dd4fd94 Fix new CodeEmitter stuff to follow LLVM codying style. Patch by Aaron Gray 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72697 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 19:57:37 +00:00
Anton Korobeynikov
d260c248ab Do not emit "generic" CPU string. This fixes PR4291. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72696 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 19:03:17 +00:00
Eli Friedman
41b33f437f PR4286: Make RewriteLoadUserOfWholeAlloca and 
RewriteStoreUserOfWholeAlloca deal with tail padding because 
isSafeUseOfBitCastedAllocation expects them to.  Otherwise, we crash 
trying to erase the bitcast.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72688 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 09:14:32 +00:00
Nick Lewycky
3728a02534 Update the bitcode reader to support reading .bc files where the embedded 
metadata references non-Constant values such as instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72685 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-06-01 04:42:10 +00:00
Dan Gohman
2d98f0664b Fix a grammaro and clarify a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72668 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-31 17:52:18 +00:00
Dan Gohman
18a69c5a36 Delete an obsolete sentance from a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72667 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-31 16:18:57 +00:00
Owen Anderson
88554df4a2 Be more aggressive in doing LoadPRE by tracing backwards when a block only has 
a single predecessor.

Patch by Jakub Staszak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72661 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-31 09:03:40 +00:00
Nick Lewycky
88b7293f49 Fix typo in error message. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72659 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-31 06:07:28 +00:00
Duncan Sands
f43071bedd Rename CustomLowerResults to CustomLowerNode, since 
it is used both when a result is illegal and when an
operand is illegal.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72658 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-31 04:15:38 +00:00
Bruno Cardoso Lopes
af90a1cd26 Use uint8_t and int32_t in {JIT,Machine}CodeEmiters 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72650 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-30 23:50:33 +00:00
Bruno Cardoso Lopes
a3f99f9033 First patch in the direction of splitting MachineCodeEmitter in two subclasses: 
JITCodeEmitter and ObjectCodeEmitter. No functional changes yet. Patch by Aaron Gray



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72631 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-30 20:51:52 +00:00
Chris Lattner
0e98e4d299 fix PR4284, a bug in simplifylibcalls handling memcmp. Patch by 
Benjamin Kramer!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72625 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-30 18:43:04 +00:00
Evan Cheng
cf7895ff8b (i64 (zext (srl GR32 8))) -> movzbl AH is not safe since srl 8 only clear the top 8 bits. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72618 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-30 08:43:27 +00:00
Nick Lewycky
7a0370f66a Give embedded metadata its own type instead of relying on EmptyStructTy. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72610 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-30 05:06:04 +00:00
Mike Stump
c5ca713b80 Add support for letting the client choose different flavors of NaNs. Testcase to be 
added in clang.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72606 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-30 03:49:43 +00:00
Bill Wendling
51b16f4737 Untabification. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72604 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-30 01:09:53 +00:00
Anton Korobeynikov
d4022c3fbb Add placeholder for thumb2 stuff 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72593 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-29 23:41:08 +00:00
Bill Wendling
3c04296b83 Enable GVN Load PRE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72589 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-29 20:38:16 +00:00
Duncan Sands
44008257a4 Dan noticed that the verifier wasn't thoroughly checking uses of 
invoke results (see the testcases).  Tighten up the checking.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72586 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-29 19:39:36 +00:00
Torok Edwin
70ac142560 just show the instruction, its not that slow. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72577 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-29 16:58:36 +00:00
Torok Edwin
7e55a00d06 for instructions with void type we have no choice but print the instruction as 
is, otherwise we get a <badref>.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72567 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-29 10:28:44 +00:00
Torok Edwin
3f3c6d4e5b Add a DEBUG() output to GVN that prints the instruction clobbering a load. 
This is useful when trying to figure out why GVN didn't eliminate redundant
loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72565 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-29 09:46:03 +00:00
Owen Anderson
246ddf55d1 Fix an issue where phiMap was not being updated properly when doing load PRE. 
Diagnosis and patch thanks to Jakub Staszak.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72562 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-29 05:37:54 +00:00
Evan Cheng
cb219f0ef6 More h-registers tricks: folding zext nodes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72558 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-29 01:44:43 +00:00
Evan Cheng
d3c76bb6fc Do not try to create a MVT type of width 0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72557 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 23:52:18 +00:00
Bill Wendling
2265ba0717 The MONITOR and MWAIT instructions have insufficient information for 
decoding. Essentially, they both map to the same column in the "opcode
extensions for one- and two-byte opcodes" table in the x86 manual. The RawFrm
complicates decoding this.

Instead, use opcode 0x01, prefix 0x01, and form MRM1r. Then have the code
emitter special case these, a la [SML]FENCE.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72556 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 23:40:46 +00:00
Eli Friedman
bbdd903c52 Re-commit r72514 and r72516 with a fixed version of BR_CC lowering. 
This patch removes some special cases for opcodes and does a bit of 
cleanup.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72536 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 20:40:34 +00:00
Evan Cheng
8a0b2daac2 Fix MOVMSKPDrr encoding. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72535 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 18:55:28 +00:00
Evan Cheng
ed7f56b555 Fix PSIGND encoding bug. Patch by Sean Callanan. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72534 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 18:48:53 +00:00
Evan Cheng
cdcecc03ce Incorporate patch feedbacks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72533 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 18:41:02 +00:00
Sanjiv Gupta
dd4694b519 Emit debug info for locals with proper scope. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72531 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 18:24:11 +00:00
Bill Wendling
43b41273f3 Temporarily revert r72514 (and dependent patch r72516). It was causing this 
failure during llvm-gcc bootstrap:

Assertion failed: (!Tmp2.getNode() && "Can't legalize BR_CC with legal condition!"), function ExpandNode, file /Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmCore.roots/llvmCore~obj/src/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp, line 2923.
/Volumes/Sandbox/Buildbot/llvm/full-llvm/build/llvmgcc42.roots/llvmgcc42~obj/src/gcc/libgcc2.c:1727: internal compiler error: Abort trap
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72530 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 18:18:59 +00:00
Sanjiv Gupta
a455942895 Mark the branch insns correctly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72529 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 17:32:56 +00:00
Sanjiv Gupta
df75a27609 Fixing problems that got exposed after the refactoring of LegalizeDAG done in 72447. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72521 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 06:59:57 +00:00
Eli Friedman
e727d7a084 Remove a couple of useless functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72516 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 04:49:34 +00:00
Eli Friedman
1c39965342 Remove special cases for more opcodes. 
This is basically the end of this series of patches for LegalizeDAG; the 
remaining special cases can't be removed without more infrastructure 
work.  There's a FIXME for each relevant opcode near the beginning of
SelectionDAGLegalize::LegalizeOp.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72514 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 04:39:57 +00:00
Eli Friedman
c06441e5ea Return the operand rather than a null SDValue when the given SELECT_CC 
is actually legal.  Part of LegalizeDAG cleanups.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72513 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 04:31:08 +00:00
Nick Lewycky
e3f1fb1ee8 Use Operands.data() instead of &Operands[0] where Operands is a potentially 
empty SmallVector.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72512 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 04:08:10 +00:00
Eli Friedman
ad75460e30 Remove special case for SETCC opcode; add some comments explaining why 
some special cases are necessary.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72511 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 03:56:57 +00:00
Jeffrey Yasskin
2d92c71668 This patch brings the list of attributes in CPPBackend.cpp up to date with the 
list in Attributes.h. It also reorders the CPPBackend list to match so that
it's easier to see that it's complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72510 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 03:16:17 +00:00
Eli Friedman
3be2e514c9 Some minor cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72509 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 03:06:16 +00:00
Bill Wendling
3b1259bb9f "The instructions MMX_PSADBWrm and MMX_PSADBWrr have opcode 0b11100000 (e0), but 
the Intel manual (screenshot) says it should be 0b11110110 (f6).  The existing
encoding causes a disassembly conflict with MMX_PAVGBrm, which really should be
0f e0."

Patch by Sean Callanan!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72508 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 02:04:00 +00:00
Evan Cheng
8b944d39b3 Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code. 
e.g.
orl     $65536, 8(%rax)
=>
orb     $1, 10(%rax)

Since narrowing is not always a win, e.g. i32 -> i16 is a loss on x86, dag combiner consults with the target before performing the optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72507 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-05-28 00:35:15 +00:00