llvm/test/Transforms/SimplifyCFG, branch release_26http://llvm.orghttps://git.amat.us/llvm/atom/test/Transforms/SimplifyCFG?h=release_262009-08-16T04:23:49ZFix for PR3016: detect the tricky case, where there are 2009-08-16T04:23:49ZEli Friedmaneli.friedman@gmail.com2009-08-16T04:23:49Zurn:sha1:12bb766ae9458b631e9acd97443345966788b5de
unfoldable references to a PHI node in the block being folded, and disable
the transformation in that case. The correct transformation of such PHI
nodes depends on whether BB dominates Succ, and dominance is expensive
to compute here. (Alternatively, it's possible to check whether any
uses are live, but that's also essentially a dominance calculation.
Another alternative is to use reg2mem, but it probably isn't a good idea to
use that in simplifycfg.)
Also, remove some incorrect code from CanPropagatePredecessorsForPHIs
which is made unnecessary with this patch: it didn't consider the case
where a PHI node in BB has multiple uses.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79174 91177308-0d34-0410-b5e6-96231b3b80d8
Revert 75571; I'm convinced this isn't the right thing to do.2009-07-14T17:48:25ZDale Johannesendalej@apple.com2009-07-14T17:48:25Zurn:sha1:fa196e34b0676a48d824c8feb29c6ca016667025
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75642 91177308-0d34-0410-b5e6-96231b3b80d8
Don't delete asm's just because their inputs are undefined;2009-07-14T00:45:38ZDale Johannesendalej@apple.com2009-07-14T00:45:38Zurn:sha1:4458ab0d83c33a649c61355a4d80e94014193856
xor R, R is a common and valid idiom for zeroing a register, for example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75571 91177308-0d34-0410-b5e6-96231b3b80d8
Fix the crash in this test. This is basically the same2009-06-15T20:59:27ZDale Johannesendalej@apple.com2009-06-15T20:59:27Zurn:sha1:c1f104054dda0b3946abbe3b6859e960b60168f7
problem addressed in 31284, but the patch there only
addressed the case where an invoke is the first thing in
a block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@73416 91177308-0d34-0410-b5e6-96231b3b80d8
Split the Add, Sub, and Mul instruction opcodes into separate2009-06-04T22:49:04ZDan Gohmangohman@apple.com2009-06-04T22:49:04Zurn:sha1:ae3a0be92e33bc716722aa600983fc1535acb122
integer and floating-point opcodes, introducing
FAdd, FSub, and FMul.
For now, the AsmParser, BitcodeReader, and IRBuilder all preserve
backwards compatability, and the Core LLVM APIs preserve backwards
compatibility for IR producers. Most front-ends won't need to change
immediately.
This implements the first step of the plan outlined here:
http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72897 91177308-0d34-0410-b5e6-96231b3b80d8
Testcase for 71688.2009-05-13T18:33:24ZDale Johannesendalej@apple.com2009-05-13T18:33:24Zurn:sha1:6f21a8f6367e1120e14354d63cf73704ad0c9303
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71691 91177308-0d34-0410-b5e6-96231b3b80d8
While hoisting instruction to speculatively execute simple bb, ignore dbg intrinsics.2009-03-06T06:00:17ZDevang Pateldpatel@apple.com2009-03-06T06:00:17Zurn:sha1:06b1e67d44a6c13f9e75fbc1ac3c7de2df4776c9
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66255 91177308-0d34-0410-b5e6-96231b3b80d8
Ignore dbg info intrinsics when folding conditional branch to 2009-02-26T06:56:37ZZhou Shengzhousheng00@gmail.com2009-02-26T06:56:37Zurn:sha1:a8d57fe96bb870e4f69c6b522a78936d1495d0d2
conditional branch predecessors.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65509 91177308-0d34-0410-b5e6-96231b3b80d8
Don't block basic block with only SwitchInst to fold into predecessors.2009-02-25T15:34:27ZZhou Shengzhousheng00@gmail.com2009-02-25T15:34:27Zurn:sha1:9a7c743fc0d45e4f2331c4092d3f29bf18351e6f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65456 91177308-0d34-0410-b5e6-96231b3b80d8
While folding unconditional return move DbgRegionEndInst into the predecessor, instead of removing it. This fixes following tests from llvmgcc42 testsuite.2009-02-24T00:05:16ZDevang Pateldpatel@apple.com2009-02-24T00:05:16Zurn:sha1:5622f07a21b799964dc172925b9ebc38191859f6
gcc.c-torture/execute/20000605-3.c
gcc.c-torture/execute/20020619-1.c
gcc.c-torture/execute/20030920-1.c
gcc.c-torture/execute/loop-ivopts-1.c
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65353 91177308-0d34-0410-b5e6-96231b3b80d8