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 | ed70cc3e1ba3b7b511c1bd6d3358ba58cc0eae63 (patch) | |
| tree | ca2ba2bb09f7c2467c42a0875f2a5dce147c349c | |
| parent | 7e789a2e81fa5640053eb61f5fc8b434d4fd19ef (diff) | |
$ 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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_28@113913 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/PeepholeOptimizer.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/PeepholeOptimizer.cpp b/lib/CodeGen/PeepholeOptimizer.cpp index ea14d276d5..17cee46ca1 100644 --- a/lib/CodeGen/PeepholeOptimizer.cpp +++ b/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 { |