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| author | Dehao Chen <dehao@google.com> | 2016-09-30 18:30:04 +0000 |
|---|---|---|
| committer | Dehao Chen <dehao@google.com> | 2016-09-30 18:30:04 +0000 |
| commit | 977853b7c52bd2e05ec9150513c509edc831c9c6 (patch) | |
| tree | bceeba0f26f0d97c11f12ed66bd4c170e0dfb722 /llvm/lib | |
| parent | 4b0c5aea7856eacf0e309360a3e72cf96cf602e9 (diff) | |
| download | bcm5719-llvm-977853b7c52bd2e05ec9150513c509edc831c9c6.tar.gz bcm5719-llvm-977853b7c52bd2e05ec9150513c509edc831c9c6.zip | |
Update loop unroller cost model to make sure debug info does not affect optimization decisions.
Summary: Debug info should *not* affect optimization decisions. This patch updates loop unroller cost model to make it not affected by debug info.
Reviewers: davidxl, mzolotukhin
Subscribers: haicheng, llvm-commits, mzolotukhin
Differential Revision: https://reviews.llvm.org/D25098
llvm-svn: 282894
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp index ab8c7b664cf..5ab61f1c97e 100644 --- a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp +++ b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp @@ -411,6 +411,9 @@ analyzeLoopUnrollCost(const Loop *L, unsigned TripCount, DominatorTree &DT, // it. We don't change the actual IR, just count optimization // opportunities. for (Instruction &I : *BB) { + if (isa<DbgInfoIntrinsic>(I)) + continue; + // Track this instruction's expected baseline cost when executing the // rolled loop form. RolledDynamicCost += TTI.getUserCost(&I); |
