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| author | Dan Gohman <gohman@apple.com> | 2010-08-29 15:07:13 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-08-29 15:07:13 +0000 |
| commit | c6a8e99fb34f039d5e410409f21cc03802059e59 (patch) | |
| tree | aace68f5f6a9d3ca526c4476b98cca4240cab458 | |
| parent | 0f32ae3aa7e1020979e4537885f5a95bba073adc (diff) | |
| download | external_llvm-c6a8e99fb34f039d5e410409f21cc03802059e59.zip external_llvm-c6a8e99fb34f039d5e410409f21cc03802059e59.tar.gz external_llvm-c6a8e99fb34f039d5e410409f21cc03802059e59.tar.bz2 | |
Micro-optimize GroupByComplexity.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112431 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Analysis/ScalarEvolution.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp index 176de3a..863f8a6 100644 --- a/lib/Analysis/ScalarEvolution.cpp +++ b/lib/Analysis/ScalarEvolution.cpp @@ -704,8 +704,9 @@ static void GroupByComplexity(SmallVectorImpl<const SCEV *> &Ops, if (Ops.size() == 2) { // This is the common case, which also happens to be trivially simple. // Special case it. - if (SCEVComplexityCompare(LI)(Ops[1], Ops[0])) - std::swap(Ops[0], Ops[1]); + const SCEV *&LHS = Ops[0], *&RHS = Ops[1]; + if (SCEVComplexityCompare(LI)(RHS, LHS)) + std::swap(LHS, RHS); return; } |