diff options
| author | Bill Wendling <isanbard@gmail.com> | 2010-09-15 00:32:40 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2010-09-15 00:32:40 +0000 |
| commit | 42e23e97ba034899df01aec29080028450149743 (patch) | |
| tree | 1b5c4b6a60bed5fe60946bc519844d93195cd7e7 | |
| parent | 68cf62a515043c1795e0ebf4c45f906a297ad2e2 (diff) | |
| download | llvm-42e23e97ba034899df01aec29080028450149743.zip llvm-42e23e97ba034899df01aec29080028450149743.tar.gz llvm-42e23e97ba034899df01aec29080028450149743.tar.bz2 | |
$ svn merge -c 113848 https://llvm.org/svn/llvm-project/llvm/trunk
--- Merging r113848 into '.':
U lib/CodeGen/PeepholeOptimizer.cpp
must not peephole away side effects
llvm-svn: 113913
| -rw-r--r-- | llvm/lib/CodeGen/PeepholeOptimizer.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/PeepholeOptimizer.cpp b/llvm/lib/CodeGen/PeepholeOptimizer.cpp index ea14d27..17cee46 100644 --- a/llvm/lib/CodeGen/PeepholeOptimizer.cpp +++ b/llvm/lib/CodeGen/PeepholeOptimizer.cpp @@ -272,7 +272,8 @@ bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) { MII = I->begin(), ME = I->end(); MII != ME; ) { MachineInstr *MI = &*MII; - if (MI->getDesc().isCompare()) { + if (MI->getDesc().isCompare() && + !MI->getDesc().hasUnmodeledSideEffects()) { ++MII; // The iterator may become invalid if the compare is deleted. Changed |= OptimizeCmpInstr(MI, MBB); } else { |