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| author | Dale Johannesen <dalej@apple.com> | 2009-04-20 22:19:33 +0000 |
|---|---|---|
| committer | Dale Johannesen <dalej@apple.com> | 2009-04-20 22:19:33 +0000 |
| commit | 12382204739184025a60000298bf78be7ed90830 (patch) | |
| tree | e84764b2f6f9838d85112b4038d86a9632df32c0 /llvm/lib/Transforms/Scalar/LoopUnroll.cpp | |
| parent | 40c52322a736a2950e711c8bbf536644860fe193 (diff) | |
| download | bcm5719-llvm-12382204739184025a60000298bf78be7ed90830.tar.gz bcm5719-llvm-12382204739184025a60000298bf78be7ed90830.zip | |
Adjust loop size estimate for full unrolling;
GEP's don't usually become instructions.
llvm-svn: 69631
Diffstat (limited to 'llvm/lib/Transforms/Scalar/LoopUnroll.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopUnroll.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopUnroll.cpp b/llvm/lib/Transforms/Scalar/LoopUnroll.cpp index 2025fb68288..23757cdb2d2 100644 --- a/llvm/lib/Transforms/Scalar/LoopUnroll.cpp +++ b/llvm/lib/Transforms/Scalar/LoopUnroll.cpp @@ -89,6 +89,8 @@ static unsigned ApproximateLoopSize(const Loop *L) { // Ignore instructions only used by the loop terminator. } else if (isa<DbgInfoIntrinsic>(I)) { // Ignore debug instructions + } else if (isa<GetElementPtrInst>(I) && I->hasOneUse()) { + // Ignore GEP as they generally are subsumed into a load or store. } else if (isa<CallInst>(I)) { // Estimate size overhead introduced by call instructions which // is higher than other instructions. Here 3 and 10 are magic |
