Chris Lattner
b27b5d0a3a
fix PR8807 by making transformConstExprCastCall aware of byval arguments.
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llvm-svn: 122238
2010-12-20 08:36:38 +00:00
Chris Lattner
a3fea736c1
various cleanups for transformConstExprCastCall
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llvm-svn: 122237
2010-12-20 08:25:06 +00:00
Mon P Wang
4ab0ea216d
Avoid dropping the address space when InstCombine optimizes memset
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llvm-svn: 122215
2010-12-20 01:05:30 +00:00
Chris Lattner
7858cb9c08
move a transformation to a more logical place, simplifying it.
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llvm-svn: 122183
2010-12-19 19:43:52 +00:00
Chris Lattner
faef9b6bfb
optimize uadd(x, cst) into a comparison when the normal
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result is dead. This is required for my next patch to not
regress the testsuite.
llvm-svn: 122181
2010-12-19 19:35:32 +00:00
Bob Wilson
0290dbe7d4
Teach instcombine to set the alignment arguments for NEON load/store intrinsics.
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llvm-svn: 117154
2010-10-22 21:41:48 +00:00
Chris Lattner
bf0f375aba
fix PR8267 - Instcombine shouldn't optimizer away volatile memcpy's.
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llvm-svn: 115296
2010-10-01 05:51:02 +00:00
Eli Friedman
7197d66ff1
PR7853: fix a silly mistake introduced in r101899, and add a test to make sure
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it doesn't regress again.
llvm-svn: 110597
2010-08-09 20:49:43 +00:00
Dan Gohman
8391bdbe95
Use unary + instead of a separate local variable for working
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around std::min vs static const friction.
llvm-svn: 110112
2010-08-03 16:15:50 +00:00
Dan Gohman
230d92b375
Move MaximumAlignment to be a member of the Value class.
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llvm-svn: 109891
2010-07-30 21:07:05 +00:00
Dan Gohman
939744be5f
Define a maximum supported alignment value for load, store, and
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alloca instructions (constrained by their internal encoding),
and add error checking for it. Fix an instcombine bug which
generated huge alignment values (null is infinitely aligned).
This fixes undefined behavior noticed by John Regehr.
llvm-svn: 109643
2010-07-28 20:12:04 +00:00
Dan Gohman
5295c21189
When user code intentionally dereferences null, the alignment of the
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dereference is theoretically infinite. Put a cap on the computed
alignment to avoid overflow, noticed by John Regehr.
llvm-svn: 109596
2010-07-28 17:14:23 +00:00
Gabor Greif
a7509fca78
undo 80 column trespassing I caused
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llvm-svn: 109092
2010-07-22 10:37:47 +00:00
Gabor Greif
17c48ecd68
eliminate CallInst::ArgOffset
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llvm-svn: 108522
2010-07-16 09:38:02 +00:00
Gabor Greif
e315b7db00
use getArgOperand (corrected by CallInst::ArgOffset) instead of getOperand
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llvm-svn: 107275
2010-06-30 12:38:26 +00:00
Gabor Greif
cc251773b5
use ArgOperand API
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llvm-svn: 107017
2010-06-28 16:50:57 +00:00
Gabor Greif
d2559bceee
use ArgOperand API (some hunks I could split)
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llvm-svn: 106824
2010-06-25 07:57:14 +00:00
Gabor Greif
04a3ec3771
use (even more, still) ArgOperand API
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llvm-svn: 106750
2010-06-24 15:51:11 +00:00
Gabor Greif
55a6d5f8c5
use (even more) ArgOperand API
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llvm-svn: 106744
2010-06-24 13:54:33 +00:00
Gabor Greif
37ff2f8455
use ArgOperand API
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llvm-svn: 106743
2010-06-24 13:42:49 +00:00
Gabor Greif
f53212a5a3
use ArgOperand API
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llvm-svn: 106740
2010-06-24 12:58:35 +00:00
Duncan Sands
32d3986765
Teach instCombine to remove malloc+free if malloc's only uses are comparisons
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to null. Patch by Matti Niemenmaa.
llvm-svn: 104871
2010-05-27 19:09:06 +00:00
Chris Lattner
22d3b3b3b7
further clarify alignment of globals, fix instcombine
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to not increase the alignment of globals with an assigned
alignment and section.
llvm-svn: 102476
2010-04-28 00:31:12 +00:00
Gabor Greif
2eaf8afcff
use abstract accessors to CallInst
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llvm-svn: 101899
2010-04-20 13:13:04 +00:00
Eric Christopher
e78496e5f1
Revert 101465, it broke internal OpenGL testing.
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Probably the best way to know that all getOperand() calls have been handled
is to replace that API instead of updating.
llvm-svn: 101579
2010-04-16 23:37:20 +00:00
Gabor Greif
e7d6812008
reapply r101434
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with a fix for self-hosting
rotate CallInst operands, i.e. move callee to the back
of the operand array
the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary
llvm-svn: 101465
2010-04-16 15:33:14 +00:00
Gabor Greif
cd116e8c6a
back out r101423 and r101397, they break llvm-gcc self-host on darwin10
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llvm-svn: 101434
2010-04-16 01:16:20 +00:00
Gabor Greif
2e18d34d80
reapply r101364, which has been backed out in r101368
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with a fix
rotate CallInst operands, i.e. move callee to the back
of the operand array
the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary
llvm-svn: 101397
2010-04-15 20:51:13 +00:00
Gabor Greif
6022150477
back out r101364, as it trips the linux nightlybot on some clang C++ tests
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llvm-svn: 101368
2010-04-15 12:46:56 +00:00
Gabor Greif
428ca23bbd
rotate CallInst operands, i.e. move callee to the back
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of the operand array
the motivation for this patch are laid out in my mail to llvm-commits:
more efficient access to operands and callee, faster callgraph-construction,
smaller compiler binary
llvm-svn: 101364
2010-04-15 10:49:53 +00:00
Mon P Wang
484bbe6aa9
Reapply address space patch after fixing an issue in MemCopyOptimizer.
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Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
llvm-svn: 100304
2010-04-04 03:10:48 +00:00
Mon P Wang
0ccf050ca3
Revert r100191 since it breaks objc in clang
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llvm-svn: 100199
2010-04-02 18:43:02 +00:00
Mon P Wang
a01350755e
Reapply address space patch after fixing an issue in MemCopyOptimizer.
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Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
llvm-svn: 100191
2010-04-02 18:04:15 +00:00
Bob Wilson
aae933cc81
Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots.
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llvm-svn: 99948
2010-03-30 22:27:04 +00:00
Mon P Wang
9351ea594a
Added support for address spaces and added a isVolatile field to memcpy, memmove, and memset,
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e.g., llvm.memcpy.i32(i8*, i8*, i32, i32) -> llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
A update of langref will occur in a subsequent checkin.
llvm-svn: 99928
2010-03-30 20:55:56 +00:00
Evan Cheng
a544f02286
Fix an incorrect logic causing instcombine to miss some _chk -> non-chk transformations.
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llvm-svn: 99263
2010-03-23 06:06:09 +00:00
Gabor Greif
abb84bec5c
Add a setCalledFunction member to InvokeInst (like in CallInst)
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and use this (as well as getCalledValue) to access the callee,
instead of {g|s}etOperand(0).
llvm-svn: 99084
2010-03-20 21:00:25 +00:00
Benjamin Kramer
0592752a53
Factor checked library call optimization into a common helper class and use it
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to unify the almost identical code in CodeGenPrepare and InstCombineCalls.
llvm-svn: 98338
2010-03-12 09:27:41 +00:00
Benjamin Kramer
846fefb000
stpcpy is so similar to strcpy, it doesn't deserve a complete copy of the __strcpy_chk -> strcpy code.
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llvm-svn: 98284
2010-03-11 20:45:13 +00:00
Eric Christopher
017a0a06d8
Lower stpcpy_chk when possible.
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llvm-svn: 98274
2010-03-11 19:24:34 +00:00
Eric Christopher
c2a92dadc5
Add strncpy libcall creator. Use it when it should be used.
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llvm-svn: 98219
2010-03-11 01:25:07 +00:00
Evan Cheng
db47eab2a3
Re-commit 97860 with fix. getMallocAllocatedType may return null.
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llvm-svn: 98000
2010-03-08 22:54:36 +00:00
Eric Christopher
b7e9bf6e57
Let the fallthrough handle whether or not we've changed anything
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before we try to optimize.
llvm-svn: 97876
2010-03-06 10:59:25 +00:00
Eric Christopher
a671e4f7aa
Migrate _chk call lowering from SimplifyLibCalls to InstCombine. Stub
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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.
llvm-svn: 97875
2010-03-06 10:50:38 +00:00
Eric Christopher
b3f0926f84
Temporarily revert:
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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.
llvm-svn: 97866
2010-03-06 03:11:35 +00:00
Evan Cheng
071e007ce6
Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.
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llvm-svn: 97860
2010-03-06 01:01:42 +00:00
Evan Cheng
782183fe4a
Instcombine should turn llvm.objectsize of a alloca with static size to an integer.
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llvm-svn: 97827
2010-03-05 20:47:23 +00:00
Evan Cheng
340941a422
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.
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llvm-svn: 97774
2010-03-05 01:22:47 +00:00
Evan Cheng
d9816ef946
Instcombine constant folding can normalize gep with negative index to index with large offset. When instcombine objsize checking transformation sees these geps where the offset seemingly point out of bound, it should just return "i don't know" rather than asserting.
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llvm-svn: 96825
2010-02-22 23:34:00 +00:00
Duncan Sands
1b33dd3c83
There are two ways of checking for a given type, for example isa<PointerType>(T)
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and T->isPointerTy(). Convert most instances of the first form to the second form.
Requested by Chris.
llvm-svn: 96344
2010-02-16 11:11:14 +00:00