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28 Commits

Author SHA1 Message Date
Mon P Wang
c576ee9040 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
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
999c1b927b Revert r100191 since it breaks objc in clang 
llvm-svn: 100199
 2010-04-02 18:43:02 +00:00
Mon P Wang
a972ab8564 Reapply address space patch after fixing an issue in MemCopyOptimizer. 
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
6f7fd28824 Revert Mon Ping's change 99928, since it broke all the llvm-gcc buildbots. 
llvm-svn: 99948
 2010-03-30 22:27:04 +00:00
Mon P Wang
7460571381 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)
A update of langref will occur in a subsequent checkin.

llvm-svn: 99928
 2010-03-30 20:55:56 +00:00
Evan Cheng
3f7842232e Fix an incorrect logic causing instcombine to miss some _chk -> non-chk transformations. 
llvm-svn: 99263
 2010-03-23 06:06:09 +00:00
Evan Cheng
4f2fd2d2be Re-commit 97860 with fix. getMallocAllocatedType may return null. 
llvm-svn: 98000
 2010-03-08 22:54:36 +00:00
Eric Christopher
a7fb58f5f5 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.

llvm-svn: 97875
 2010-03-06 10:50:38 +00:00
Eric Christopher
d8b43d0e59 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.

llvm-svn: 97866
 2010-03-06 03:11:35 +00:00
Evan Cheng
afdc7d3aab Transform @llvm.objectsize to integer if the argument is a result of malloc of known size. 
llvm-svn: 97860
 2010-03-06 01:01:42 +00:00
Evan Cheng
fffdad58ac Instcombine should turn llvm.objectsize of a alloca with static size to an integer. 
llvm-svn: 97827
 2010-03-05 20:47:23 +00:00
Dan Gohman
882c95605f LLVM instruction syntax doesn't have trailing semicolons. 
llvm-svn: 97456
 2010-03-01 17:53:15 +00:00
Evan Cheng
3688b8fa68 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. 
llvm-svn: 96825
 2010-02-22 23:34:00 +00:00
Eric Christopher
843a4cc43c Fix a problem where we had bitcasted operands that gave us 
odd offsets since the bitcasted pointer size and the offset pointer
size are going to be different types for the GEP vs base object.

llvm-svn: 96134
 2010-02-13 23:38:01 +00:00
Eric Christopher
cccdc13662 Make sure that ConstantExpr offsets also aren't off of extern 
symbols.

Thanks to Duncan Sands for the testcase!

llvm-svn: 95877
 2010-02-11 17:44:04 +00:00
Eric Christopher
531ea566a6 Add ConstantExpr handling to Intrinsic::objectsize lowering. 
Update testcase accordingly now that we can optimize another
section.

llvm-svn: 95846
 2010-02-11 01:48:54 +00:00
Eric Christopher
7b7028fd24 Move Intrinsic::objectsize lowering back to InstCombineCalls and 
enable constant 0 offset lowering.

llvm-svn: 95691
 2010-02-09 21:24:27 +00:00
Eric Christopher
ad1aa86276 Pull these back out, they're a little too aggressive and time 
consuming for a simple optimization.

llvm-svn: 95671
 2010-02-09 17:29:18 +00:00
Eric Christopher
9f85e7eb16 Add a new pass to do llvm.objsize lowering using SCEV. 
Initial skeleton and SCEVUnknown lowering implemented,
the rest should come relatively quickly.  Move testcase
to new directory.

Move pass to right before SimplifyLibCalls - which is
moved down a bit so we can take advantage of a few opts.

llvm-svn: 95628
 2010-02-09 00:35:38 +00:00
Eric Christopher
04371b4f12 Remove this code for now. I have a better idea and will rewrite with 
that in mind.

llvm-svn: 95402
 2010-02-05 19:04:06 +00:00
Eric Christopher
107a1fbf61 Temporarily revert this since it appears to have caused a build 
failure.

llvm-svn: 95294
 2010-02-04 06:41:27 +00:00
Eric Christopher
42fa84a880 Rework constant expr and array handling for objectsize instcombining. 
Fix bugs where we would compute out of bounds as in bounds, and where
we couldn't know that the linker could override the size of an array.

Add a few new testcases, change existing testcase to use a private
global array instead of extern.

llvm-svn: 95283
 2010-02-04 02:55:34 +00:00
Eric Christopher
f12e18db21 If we're dealing with a zero-length array, don't lower to any 
particular size, we just don't know what the length is yet.

llvm-svn: 95266
 2010-02-03 23:56:07 +00:00
Eric Christopher
d86233c118 Recommit this, looks like it wasn't the cause. 
llvm-svn: 95165
 2010-02-03 00:21:58 +00:00
Eric Christopher
e67d01a9a8 Hopefully temporarily revert this. 
llvm-svn: 95154
 2010-02-02 23:01:31 +00:00
Eric Christopher
4264e7e46f Re-add strcmp and known size object size checking optimization. 
Passed bootstrap and nightly test run here.

llvm-svn: 95145
 2010-02-02 22:10:43 +00:00
Eric Christopher
5a0e174863 Revert my last couple of patches. They appear to have broken bison. 
llvm-svn: 94841
 2010-01-29 21:16:24 +00:00
Eric Christopher
997f7ca8c5 Add constant support to object size handling and remove default 
lowering. We'll either figure it out, or not and be lowered by
SelectionDAGBuild.

Add test.

llvm-svn: 94775
 2010-01-29 01:09:57 +00:00