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| author | Nick Lewycky <nicholas@mxc.ca> | 2007-09-20 00:48:36 +0000 |
|---|---|---|
| committer | Nick Lewycky <nicholas@mxc.ca> | 2007-09-20 00:48:36 +0000 |
| commit | 56d2482a7d45a947b5bdf07b80bb23ceb78173f8 (patch) | |
| tree | dc55eb3066f65c3209bd917fd521cda7378a2fbe /lib | |
| parent | cd497f4be825a3389ab7b338c07993782afd69ff (diff) | |
| download | external_llvm-56d2482a7d45a947b5bdf07b80bb23ceb78173f8.zip external_llvm-56d2482a7d45a947b5bdf07b80bb23ceb78173f8.tar.gz external_llvm-56d2482a7d45a947b5bdf07b80bb23ceb78173f8.tar.bz2 | |
Fix optimization. %x = sub %x, %y does not imply that %y is zero.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42157 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Transforms/Scalar/PredicateSimplifier.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Transforms/Scalar/PredicateSimplifier.cpp b/lib/Transforms/Scalar/PredicateSimplifier.cpp index 8b4ed73..3723bcb 100644 --- a/lib/Transforms/Scalar/PredicateSimplifier.cpp +++ b/lib/Transforms/Scalar/PredicateSimplifier.cpp @@ -2001,7 +2001,7 @@ namespace { if (!isRelatedBy(Known, Zero, ICmpInst::ICMP_NE)) break; // otherwise, fall-through. case Instruction::Sub: - if (Unknown == Op1) break; + if (Unknown == Op0) break; // otherwise, fall-through. case Instruction::Xor: case Instruction::Add: |