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36871 Commits

Author SHA1 Message Date
Evan Cheng
bfc9999563 Allow more cross-rc coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98048 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 06:38:17 +00:00
Chris Lattner
c608784dc8 reapply r98035: 
Now that setStartLabel takes an MCSymbol, we can de-ID'ize
beginScope and RecordSourceLine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98047 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:54:43 +00:00
Chris Lattner
6c7dfc0463 add some extra checks. I'm not sure why, but this does unbreak a 
failure remaining on mainline.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98046 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:48:35 +00:00
Evan Cheng
7ef1840d9e Revert accidental commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98045 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 04:04:38 +00:00
Jakob Stoklund Olesen
1552cccc76 Don't do illegal cross-class coalescing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98044 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 03:56:06 +00:00
Evan Cheng
31f94c7c22 - Make the machine cse dumb coalescer (as opposed to the more awesome simple 
coalescer) handle sub-register classes.
- Add heuristics to avoid non-profitable cse. Given the current lack of live
  range splitting, avoid cse when an expression has PHI use and the would be
  new use is in a BB where the expression wasn't already being used.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98043 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 03:21:12 +00:00
Dan Gohman
81d0c36d22 Don't try to fold V_SET0 and V_SETALLONES to loads in medium and 
large code models.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98042 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 03:01:40 +00:00
Bill Wendling
94a1c631db This is part of an LLC-beta test used to test <rdar://problem/6804645>. Please 
bear with the awful code. It won't last in its current state beyond tonight.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98040 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:46:12 +00:00
Eric Christopher
ee6414cf04 Speculatively revert r98035. It appears to have caused a set of buildbot 
failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98039 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:36:31 +00:00
Dan Gohman
19b3826d0f Attempt to make this debug output meaningful, both in the case of 
multibyte opcodes and in the case of multiple scopes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98036 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:15:05 +00:00
Chris Lattner
1e233f510c Now that setStartLabel takes an MCSymbol, we can de-ID'ize 
beginScope and RecordSourceLine.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98035 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 02:08:02 +00:00
Chris Lattner
b7db733482 change DbgScope to keep track of the start/end label as MCSymbol* 
now that the dependence on ID is removed from MMI.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98034 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:58:53 +00:00
Dan Gohman
cbac7f1630 Make isLCSSA ignore uses in blocks not reachable from the entry block, 
as LCSSA no longer transforms such uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98033 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:53:33 +00:00
Chris Lattner
5b9062cb3a remove a useless optimization: now that label replacement never 
happens, the start/end of a scope can never be the same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98032 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:52:43 +00:00
Chris Lattner
a34ec2290f strength reduce MMI::MappedLabel to MMI::isLabelDeleted, 
and add a FIXME about how we are eventually going to zap this
lookup table once mc world domination is complete.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98031 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:51:43 +00:00
Daniel Dunbar
45aefff64c MC/Mach-O: Tweak .dump() formatting. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98028 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:12:23 +00:00
Daniel Dunbar
f8b8ad77a8 MC/Mach-O: Don't adjust section sizes when aligning zero fill sections, just pad the address. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98027 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:12:20 +00:00
Dale Johannesen
768069ee7a Another place where debug info affected codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98026 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:08:11 +00:00
Chris Lattner
b2cc1a39f7 mcstreamerize AsmPrinter::printLabel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98025 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 01:02:30 +00:00
Jakob Stoklund Olesen
2ddbf8208e Add inlining threshold to log output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98024 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:59:53 +00:00
Jakob Stoklund Olesen
35071a0847 Disable physical register coalescing when the number of live ranges for the 
physreg becomes ridiculously high.

std::upper_bound may be log(N), but for sufficiently large live intervals, it
becomes log(N)*cachemiss = a long long time.

This patch improves coalescer time by 4500x for a function with 20000
function calls. The generated code is different, but not significantly worse -
the allocator hints are almost as good as physreg coalescing anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98023 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:59:48 +00:00
Devang Patel
4b945500a5 Start using DIFile. See updated SourceLevelDebugging.html for more information. 
This patch updates LLVMDebugVersion to 8.
Debug info descriptors encoded using LLVMDebugVersion 7 is supported.

Corresponding llvmgcc and clang FE commits are required.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98020 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:44:10 +00:00
Bill Wendling
cf6f28d84a Print blank line and clear stubs vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98019 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:43:34 +00:00
Bill Wendling
becd83e3f4 MC-ize the stub printing in ARM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98018 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:40:17 +00:00
Chris Lattner
6cde3e6e99 add a EmitSymbolValue convenience method to MCStreamer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98017 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:39:24 +00:00
Chris Lattner
6ed0f90dac make InlineInfoLabels hold MCSymbol*'s, avoiding 
recomputation of the labels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98016 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:31:02 +00:00
Chris Lattner
b9dc5f7b58 mc'ize the last use of PrintLabelName and eliminate PrintLabelName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98015 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:26:09 +00:00
Chris Lattner
ef6b14f51c eliminate an argument from PrintRelDirective, sinking 
the one special case into EmitSectionOffset.  MCize
the non-special case in EmitSectionOffset.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98014 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:17:58 +00:00
Dan Gohman
8f03d75161 Print the correct index in the "match failed at index" message. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98013 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:07:36 +00:00
Chris Lattner
b67d69df65 remove the suffix form of PrintLabelName, which was only 
used for 'flavor'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98012 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:00:57 +00:00
Chris Lattner
c3421bb805 now that the debug and eh emitters use a common .set counter, 
we can eliminate "flavor".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98011 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-09 00:00:15 +00:00
Chris Lattner
0d50c7620d move .set generation out of DwarfPrinter into AsmPrinter and 
MCize it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98010 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:58:37 +00:00
Evan Cheng
5196018d9c Don't waste time trying to CSE labels, phis, inline asm. Definitely avoid cse implicit-def for obvious performance reason. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98009 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:49:12 +00:00
Evan Cheng
6c3b8ac6c9 Restrict machine cse to really trivial coalescing. Leave the heavy lifting to a real coalescer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98007 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:28:08 +00:00
Chris Lattner
57578766aa simplify EmitSectionOffset to always use .set if it is 
available, the only thing this affects is that we produce
.set in one case we didn't before, which shouldn't harm
anything.  Make EmitSectionOffset call EmitDifference
instead of duplicating it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98005 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:23:25 +00:00
Chris Lattner
82f05078b0 don't reset defaults. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98004 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:18:21 +00:00
Chris Lattner
effa868d38 Remove a version of EmitDifference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98002 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 23:02:59 +00:00
Bob Wilson
f5fd499791 Fix a crash compiling 254.gap for Thumb2. The Thumb2 add/sub with 12-bit 
immediate instructions cannot set the condition codes, so they do not have
the extra cc_out operand.  We hit an assertion during tail duplication
because the instruction being duplicated had more operands that expected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98001 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:56:15 +00:00
Evan Cheng
687fed3530 Re-commit 97860 with fix. getMallocAllocatedType may return null. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98000 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:54:36 +00:00
Chris Lattner
dd8187a3e9 eliminate a form of PrintLabelName. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97999 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:52:49 +00:00
Chris Lattner
326861c4c8 remove another form of EmitReference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97998 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:50:36 +00:00
Chris Lattner
c7249da2e9 eliminate the non-MCSymbol versions of EmitReference. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97997 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:47:57 +00:00
Chris Lattner
f829eef8fa mc'ize EmitLabel. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97996 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:44:40 +00:00
Chris Lattner
4faf59af82 merge DIEObjectLabel and DIEDwarfLabel into DIELabel. 
Yes, DIE you fiendish labels, die all of you.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97995 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:31:46 +00:00
Devang Patel
7aa8189706 Introduce DIFile. This will be used to represent header files and source file(s) in debug info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97994 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:27:22 +00:00
Chris Lattner
b98b1bf432 elimiante the DWLabel class, using MCSymbol instead. Start 
switching some stuff over to passing around MCSymbol* instead
of stem+ID.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97993 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:23:36 +00:00
Kevin Enderby
0e822407b2 Fix the vmxon entry in the X86InstrInfo.td so it has the correct prefix bytes 
for the encoding and is not the same as vmptrld.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97992 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:17:26 +00:00
Daniel Dunbar
b2b4acd757 MC/Macho-O: Align the zerofill section itself to the maximum alignment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97991 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:03:42 +00:00
Devang Patel
77bf295dbb Derive DIType from DIScope. This simplifies getContext() where for members the context is a type. This also eliminates need of CompileUnitMaps maintained by dwarf writer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97990 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 22:02:50 +00:00
Devang Patel
f17f5ebbdc Remove DbgNode checks in constructor. Debug descriptors are intended to be light weight wrappers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97988 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 21:32:10 +00:00
Daniel Dunbar
37fad5ce4d MC/Mach-O: Fix address compution for zero fill sections. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97984 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 21:10:42 +00:00
Daniel Dunbar
0ce6bd55c3 MC/Mach-O: Error out instead of crashing on invalid scattered relocation expressions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97983 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 21:10:39 +00:00
Daniel Dunbar
b93c72cda4 X86: Fix encoding for TEST{8,16,32}rr. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97982 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 21:10:36 +00:00
Devang Patel
3c91b05d2b Avoid using DIDescriptor.isNull(). 
This is a first step towards eliminating checks in Descriptor constructors.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 20:52:55 +00:00
Devang Patel
0ef3fa6aab Revert r97947. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97963 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 19:20:38 +00:00
Chris Lattner
dd6fbd1136 disambiguate some types, add a fixme about some 
inconsistent intrinsics.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97959 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:59:49 +00:00
Chris Lattner
3485b51c4d fix some more ambiguous patterns, remove another nontemporalstore 
pattern which is broken (source and address swapped).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97958 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:57:56 +00:00
Chris Lattner
341b27406d Correct immediate sizes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97957 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:55:15 +00:00
Chris Lattner
0273fbbf22 fix a type compatibility bug. imm is i32 in the input 
pattern, not i64.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97956 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:52:55 +00:00
Chris Lattner
d10a53d5a1 fix a bunch of partially ambiguous patterns on ARM. As an 
example, this:

(set DPR:$dst, (fsub (fneg (fmul DPR:$a, DPR:$b)), DPR:$dstin))

is ambiguous because DPR contains both f64 and v2f32.  tblgen
currently accidentally picks f64 because it's first in the 
regclass.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97955 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:51:21 +00:00
Chris Lattner
b200f1c28e Fix a bunch of ambiguous patterns which tblgen happens to infer types 
for, due to a bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97953 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:44:04 +00:00
Chris Lattner
e00ed57087 tidy up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97950 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:29:38 +00:00
Devang Patel
d8cc5d5256 Avoid using DIDescriptor.isNull(). 
This is a first step towards eliminating unncessary constructor checks in light weight DIDescriptor wrappers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97947 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 18:25:48 +00:00
Dale Johannesen
fab4a25d46 Add Order to SDDbgValue 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97939 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 05:39:50 +00:00
Dale Johannesen
84839daa59 Fix dbg value handling in tail merging. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97938 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 05:38:13 +00:00
Chris Lattner
9a1ac4c107 remove a non-temporal store pattern which is not tested and 
could never have matched because the operand list was backwards.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97933 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 03:18:28 +00:00
Douglas Gregor
1ddcf35b68 Revert r97917, which was causing Clang Debug self-host failures. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97932 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-08 02:58:37 +00:00
Jeffrey Yasskin
6fec233a1e Roll back r97918 again. Just configuring against llvm-gcc wasn't enough to run 
the FrontendC* tests. :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97921 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 19:26:40 +00:00
Jeffrey Yasskin
92ce42f9fc Reapply r97788 to free MDNodes when the LLVMContext is destroyed. It 
bootstraps llvm-gcc this time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97918 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 18:46:57 +00:00
Jeffrey Yasskin
9467f0e3bd Roll r97906 forward again, without double-deleting CompileUnit::IndexTyDie. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97917 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 17:10:13 +00:00
Chris Lattner
acee647b13 Use Other as a sentinel instead of iAny. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97914 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 07:45:08 +00:00
Jeffrey Yasskin
8c42ca9374 _2_ gcc crashes, ah, ah, ah... 
(Rolling back r97906.)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97909 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 07:16:49 +00:00
Jeffrey Yasskin
f7399bf929 Avoid leaking CompileUnits and DbgScopes from DwarfDebug. Leaks found by Valgrind! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97906 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 06:55:35 +00:00
Chris Lattner
98f15d27cd tidy up 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-07 04:28:09 +00:00
Wesley Peck
c2bf2bbe93 Re-committing the failed r97807 commit with changes to eliminate warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97891 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 23:23:12 +00:00
Nick Lewycky
e20ab4a03c Add verification of union types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97889 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 20:26:48 +00:00
Anton Korobeynikov
e765f2b5e3 Describe what's going on with mingw alloca and why do we need separate instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97888 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 20:07:32 +00:00
Anton Korobeynikov
ce7bf1c55f Initial bits of ARMv4-only support. 
Patch by John Tytgat!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97886 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 19:39:36 +00:00
Anton Korobeynikov
043f3c2a0e Lower dynamic stack allocation on mingw32 to separate instruction. 
We cannot use a normal call here since it has extra unmodelled side
effects (it changes stack pointer). This should fix PR5292.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97884 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 19:32:29 +00:00
Chris Lattner
0ddda3b8c6 make APFloat::toString be const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97883 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 19:20:13 +00:00
Anton Korobeynikov
9aff323a07 Do not use '&' prefix for globals when register base field is non-zero, otherwise msp430-as will silently miscompile the code (TI's assembler report an error though). 
This fixes PR6349

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97877 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 11:41:12 +00:00
Eric Christopher
7b323a34fa Let the fallthrough handle whether or not we've changed anything 
before we try to optimize.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97876 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 10:59:25 +00:00
Eric Christopher
27ceaa13f8 Migrate _chk call lowering from SimplifyLibCalls to InstCombine. Stub 
out the remainder of the calls that we should lower in some way and
move the tests to the new correct directory. Fix up tests that are now
optimized more than they were before by -instcombine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97875 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 10:50:38 +00:00
Chris Lattner
eea3f7e4ee clean this up. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97870 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 07:02:28 +00:00
Chris Lattner
0a7f442314 revert r97807, it introduced build warnings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97869 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 04:32:46 +00:00
Jim Grosbach
e68bd74245 Thumb1 epilogue code generation needs to take into account that callee-saved 
registers may be restored via a pop instruction, not just a tRestore.
This fixes nightly test 471.omnetep for Thumb1.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97867 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 03:28:39 +00:00
Eric Christopher
75f0d6953a Temporarily revert: 
Log:
Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.

Modified:
   llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp
   llvm/trunk/test/Transforms/InstCombine/objsize.ll

It appears to be causing swb and nightly test failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97866 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 03:11:35 +00:00
Dale Johannesen
621e06f9df Fix another case where LSR was affected by debug info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97865 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 02:45:26 +00:00
Evan Cheng
6cc1aeaad2 Don't update physical register def. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97861 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 01:14:19 +00:00
Evan Cheng
fc8ccfedbb Transform @llvm.objectsize to integer if the argument is a result of malloc of known size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97860 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 01:01:42 +00:00
Erick Tryzelaar
e623050048 Add a LLVMWriteBitcodeToFD that exposes the raw_fd_ostream options. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97858 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:30:06 +00:00
Erick Tryzelaar
b3195fbc2e Whoops, the old LLVMWriteBitcodeToFileHandle closed the stream. 
Luckily this never was released.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97857 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:30:01 +00:00
Erick Tryzelaar
760640599e LLVMWriteBitcodeToFileHandle should work on all architectures now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97856 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:29:58 +00:00
Dale Johannesen
06a26637da Add some new bits of debug info handling. No 
functional change yet.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97855 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:03:23 +00:00
Dan Gohman
0fa9d1d901 Reapply r97778 and r97779, enabled only for unsigned i64 to f64 
conversions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97854 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 00:00:55 +00:00
Ted Kremenek
e080b038bf Update CMake build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97846 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 22:34:16 +00:00
Charles Davis
314fef6127 Don't emit global symbols into the (__TEXT,__ustring) section on Darwin. This 
is a workaround for <rdar://problem/7672401/> (which I filed).

This let's us build Wine on Darwin, and it gets the Qt build there a little bit
further (so Doug says).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97845 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 22:28:45 +00:00
Eric Christopher
b6174e3605 Move SimplifyLibCalls's LibCall builders to a separate file so they 
can be used in more places.  Add an argument for the TargetData that
most of them need. Update for the getInt8PtrTy() change.  Should be
no functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97844 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 22:25:30 +00:00
Jakob Stoklund Olesen
53e000bac3 Better handling of dead super registers in LiveVariables. We used to do this: 
CALL ... %RAX<imp-def>
   ... [not using %RAX]
   %EAX = ..., %RAX<imp-use, kill>
   RET %EAX<imp-use,kill>

Now we do this:

   CALL ... %RAX<imp-def, dead>
   ... [not using %RAX]
   %EAX = ...
   RET %EAX<imp-use,kill>

By not artificially keeping %RAX alive, we lower register pressure a bit.

The correct number of instructions for 2008-08-05-SpillerBug.ll is obviously
55, anybody can see that. Sheesh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97838 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:17 +00:00
Jakob Stoklund Olesen
a76e816844 We don't really care about correct register liveness information after the 
post-ra scheduler has run. Disable the verifier checks that late in the game.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97837 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:13 +00:00
Jakob Stoklund Olesen
580bba2b0d Avoid creating bad PHI instructions when BR is being const-folded. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97836 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:49:10 +00:00
Dale Johannesen
8d50ea7603 Fix a case where LSR is sensitive to debug info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97830 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 21:12:40 +00:00
Evan Cheng
a79eb387ac Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97828 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 20:59:47 +00:00
Evan Cheng
a862326bc7 Instcombine should turn llvm.objectsize of a alloca with static size to an integer. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97827 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 20:47:23 +00:00
Evan Cheng
10718492c8 Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97818 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 19:55:55 +00:00
Chris Lattner
ac834e7a5f fix bss section printing for cell, patch by Kalle Raiskila! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97814 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 18:55:36 +00:00
Chris Lattner
4c5fb1a311 fix PR6512, a case where instcombine would incorrectly merge loads 
from different addr spaces.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97813 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 18:53:28 +00:00
Wesley Peck
c4155d591b Reworking the stack layout that the MicroBlaze backend generates. 
The MicroBlaze backend was generating stack layouts that did not
conform correctly to the ABI. This update generates stack layouts
which are closer to what GCC does.

Variable arguments support was added as well but the stack layout
for varargs has not been finalized.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97807 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 15:26:02 +00:00
Chris Lattner
f34f48c578 Fix PR6503. This turned into a much more interesting and nasty bug. Various 
parts of the cmp|cmp and cmp&cmp folding logic wasn't prepared for vectors
(unrelated to the bug but noticed while in the code) and the code was 
*definitely* not safe to use by the (cast icmp)|(cast icmp) handling logic
that I added in r95855.  Fix all this up by changing the various routines
to more consistently use IRBuilder and not pass in the I which had the wrong 
type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97801 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 08:46:26 +00:00
Evan Cheng
4cae133780 Fix an oops in x86 sibcall optimization. If the ByVal callee argument is itself passed as a pointer, then it's obviously not safe to do a tail call. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97797 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 08:38:04 +00:00
Chris Lattner
d6f645ac09 simplify some functions and make them work with vector 
compares, noticed by inspection.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97795 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 07:47:57 +00:00
Chris Lattner
893075f46e fix a nice subtle reassociate bug which would only occur 
in a very specific use pattern embodied in the carefully
reduced testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97794 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 07:18:54 +00:00
Eric Christopher
25ec483cfc Move GetStringLength and helper from SimplifyLibCalls to ValueTracking. 
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97793 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 06:58:57 +00:00
Jeffrey Yasskin
b71a2fcf5e Revert r97788 because it broke test/FrontendC/2010-02-16-DbgVarScope.c. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97792 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 06:43:49 +00:00
Chris Lattner
18fdabadca Fix PR6497, a bug where we'd fold a load into an addc 
node which has a flag.  That flag in turn was used by an
already-selected adde which turned into an ADC32ri8 which
used a selected load which was chained to the load we
folded.  This flag use caused us to form a cycle.  Fix
this by not ignoring chains in IsLegalToFold even in
cases where the isel thinks it can.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97791 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 06:19:13 +00:00
Chris Lattner
9bbcd5ee5b inline a small function with one call site. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97789 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 05:49:45 +00:00
Jeffrey Yasskin
c8cfa30ca5 Free MDNodes when the LLVMContext is destroyed. Leak found by Valgrind. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97788 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 05:47:09 +00:00
Mikhail Glushenkov
0d61349dc3 Use FindExecutable as a fall-back search method. 
Allows us to find executables that are in the same directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97786 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 04:46:28 +00:00
Evan Cheng
26e19ba9aa Rever 96389 and 96990. They are causing some miscompilation that I do not fully understand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97782 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 03:08:23 +00:00
Dan Gohman
b6b343d77a Revert r97778 and r97779. They're somehow breaking llvm-gcc builds. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97781 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:40:23 +00:00
Dan Gohman
808ab341b4 Fix these constants to be more portable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97779 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:13:10 +00:00
Dan Gohman
cfa7ca1997 Rewrite i64-to-f64 conversion using an algorithm which handles 
rounding correctly. This implementation is a generalization of
the x86_64 code in compiler-rt.

This fixes rdar://7683708.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97778 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 02:00:46 +00:00
Johnny Chen
fb86d78a45 Trivial comment change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97776 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 01:45:46 +00:00
Evan Cheng
f79d6246e6 Add missing break for Intrinsic::objectsize case. It was falling through to the following Intrinsic::bswap code. I have no idea why it wasn't breaking stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97774 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 01:22:47 +00:00
Chris Lattner
f071d4efeb add an assertion requested on llvmdev. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97769 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 00:49:08 +00:00
Bill Wendling
18ce64e069 Revert r97766. It's deleting a tag. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97768 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 00:33:59 +00:00
Bill Wendling
37b52ee6d9 Micro-optimization: 
This code:

float floatingPointComparison(float x, float y) {
    double product = (double)x * y;
    if (product == 0.0)
        return product;
    return product - 1.0;
}

produces this:

_floatingPointComparison:
0000000000000000        cvtss2sd        %xmm1,%xmm1
0000000000000004        cvtss2sd        %xmm0,%xmm0
0000000000000008        mulsd           %xmm1,%xmm0
000000000000000c        pxor            %xmm1,%xmm1
0000000000000010        ucomisd         %xmm1,%xmm0
0000000000000014        jne             0x00000004
0000000000000016        jp              0x00000002
0000000000000018        jmp             0x00000008
000000000000001a        addsd           0x00000006(%rip),%xmm0
0000000000000022        cvtsd2ss        %xmm0,%xmm0
0000000000000026        ret

The "jne/jp/jmp" sequence can be reduced to this instead:

_floatingPointComparison:
0000000000000000        cvtss2sd        %xmm1,%xmm1
0000000000000004        cvtss2sd        %xmm0,%xmm0
0000000000000008        mulsd           %xmm1,%xmm0
000000000000000c        pxor            %xmm1,%xmm1
0000000000000010        ucomisd         %xmm1,%xmm0
0000000000000014        jp              0x00000002
0000000000000016        je              0x00000008
0000000000000018        addsd           0x00000006(%rip),%xmm0
0000000000000020        cvtsd2ss        %xmm0,%xmm0
0000000000000024        ret

for a savings of 2 bytes.

This xform can happen when we recognize that jne and jp jump to the same "true"
MBB, the unconditional jump would jump to the "false" MBB, and the "true" branch
is the fall-through MBB.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97766 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 00:24:26 +00:00
Dale Johannesen
b0812f114b Fix some more places where dbg_value affected codegen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97765 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 00:02:59 +00:00
Jeffrey Yasskin
e5790a432a Stop leaking MDStrings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97763 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 23:24:19 +00:00
Johnny Chen
267124cff2 Drop the ".w" qualifier for t2UXTB16* instructions as there is no 16-bit version 
of either sxtb16 or uxtb16, and the unified syntax does not specify ".w".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97760 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 22:24:41 +00:00
Jeffrey Yasskin
e8cfa63e4e Fix memcheck-found leaks: one false positive from using new[], and one true 
positive where pointers would be leaked on llvm_shutdown.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97759 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 22:15:01 +00:00
Jim Grosbach
b58a59b3c1 For SJLJ exception handling, make sure that all calls that are not marked 
as nounwind are marked with a -1 call-site value. This is necessary to, for
example, correctly process exceptions thrown from within an "unexpected"
execption handler (see SingleSource/Regression/C++/EH/expection_spec_test.cpp).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97757 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 22:07:46 +00:00
Bob Wilson
436e6e7b5c pr6478: The frame pointer spill frame index is only defined when there is a 
frame pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97755 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 21:42:36 +00:00
Evan Cheng
c46e293e94 Run machine licm before machine cse to avoid messing up licm opportunities. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97752 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 21:28:09 +00:00
Evan Cheng
a5f32cb3d3 Avoid cse load instructions unless they are known to be invariant loads. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97747 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 21:18:08 +00:00
Bob Wilson
bbf39b0fd9 pr6480: Don't try producing ld/st-multiple instructions when the address is 
an undef value.  This is only going to come up for bugpoint-reduced tests --
correct programs will not access memory at undefined addresses -- so it's not
worth the effort of doing anything more aggressive.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97745 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 21:04:38 +00:00
Erick Tryzelaar
d4076cfc83 Rewrite makefiles to explicitly reference DESTDIR to fix bug 3153. 
We need this so can not bake DESTDIR into the O'Caml symlinks.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97743 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 20:56:19 +00:00
Jakob Stoklund Olesen
3cfe01072c Fix the remaining MUL8 and DIV8 to define AX instead of AL,AH. 
These instructions technically define AL,AH, but a trick in X86ISelDAGToDAG
reads AX in order to avoid reading AH with a REX instruction.

Fix PR6489.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97742 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 20:42:07 +00:00
Dan Gohman
0ef701e6ae Fix recognition of 16-bit bswap for C front-ends which emit the 
clobber registers in a different order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97741 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:58:08 +00:00
Chris Lattner
bfcc8e0a66 not committing what you test = bad. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97740 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:54:45 +00:00
Chris Lattner
225d4ca8ab make gep matching in fastisel match the base of the gep as a 
register if it isn't possible to match the indexes *and* the base.
This fixes some fast isel rejects of load instructions on oggenc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97739 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:48:19 +00:00
Chris Lattner
c19ae9d91d add a statistic for # times fastisel fails. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97738 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:46:56 +00:00
Jeffrey Yasskin
39c75f2e90 Fix PR6360. It's easy for a stub's address to escape to user code, so we can't 
just count references to it from JIT output to decide when to destroy it.  This
patch waits to destroy the JIT's memory of a stub until the Function it refers
to is destroyed.  External function stubs and GVIndirectSyms aren't destroyed
until the JIT itself is.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97737 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:45:09 +00:00
Dan Gohman
ba72b0c4e1 Fix a typo Duncan noticed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97735 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 19:11:28 +00:00
Johnny Chen
0635fc5c27 Added 32-bit Thumb instructions for Preload Data (PLD, PLDW) and Preload 
Instruction (PLI) for disassembly only.

According to A8.6.120 PLI (immediate, literal), for example, different
instructions are generated for "pli [pc, #0]" and "pli [pc, #-0"].  The
disassembler solves it by mapping -0 (negative zero) to -1, -1 to -2, ..., etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97731 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 17:40:44 +00:00
Nick Lewycky
5bf7f88ea2 Make the 'icmp pred trunc(ext(X)), CST --> icmp pred X, ext(trunc(CST))' 
transformation much more careful. Truncating binary '01' to '1' sounds like it's
safe until you realize that it switched from positive to negative under a signed
interpretation, and that depends on the icmp predicate.

Also a few miscellaneous cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97721 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 06:54:10 +00:00
Jeffrey Yasskin
e57898ce55 Fix PR5291, in which a SmallPtrSet iterator was held across an insertion into 
the set.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97720 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 06:50:01 +00:00
Evan Cheng
9763f709e2 Rename -machine-cse to -enable-machine-cse. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97713 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 02:08:04 +00:00
Chris Lattner
97d853451e add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97709 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 01:43:43 +00:00
Evan Cheng
b3958e8032 Look ahead a bit to determine if a physical register def that is not marked dead is really alive. This is necessary to catch a lot of common cse opportunities for targets like x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97706 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-04 01:33:55 +00:00