diff options
| 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 | 23300aa3e387ffd7e478804568c3754f59df7942 (patch) | |
| tree | 9d20de014007756a938c1310c27fd2304fb95d29 /lib/Transforms/Scalar/LoopUnroll.cpp | |
| parent | b306e38a2e00eccb2b6cca176ce71385fb4a77f9 (diff) | |
Adjust loop size estimate for full unrolling;
GEP's don't usually become instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69631 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Scalar/LoopUnroll.cpp')
| -rw-r--r-- | lib/Transforms/Scalar/LoopUnroll.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Transforms/Scalar/LoopUnroll.cpp b/lib/Transforms/Scalar/LoopUnroll.cpp index 2025fb6828..23757cdb2d 100644 --- a/lib/Transforms/Scalar/LoopUnroll.cpp +++ b/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 |