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| author | Mark Heffernan <meheff@google.com> | 2014-07-24 22:36:40 +0000 |
|---|---|---|
| committer | Mark Heffernan <meheff@google.com> | 2014-07-24 22:36:40 +0000 |
| commit | 8ec1474f7f5f1673f6ea0bc47bdbded62fefde0e (patch) | |
| tree | 4afcba3419d03de694751037c1005908d2130fbd /llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp | |
| parent | b5459e6e22e7daac8a303a7ccba00328cec97453 (diff) | |
| download | bcm5719-llvm-8ec1474f7f5f1673f6ea0bc47bdbded62fefde0e.tar.gz bcm5719-llvm-8ec1474f7f5f1673f6ea0bc47bdbded62fefde0e.zip | |
After unrolling a loop with llvm.loop.unroll.count metadata (unroll factor
hint) the loop unroller replaces the llvm.loop.unroll.count metadata with
llvm.loop.unroll.disable metadata to prevent any subsequent unrolling
passes from unrolling more than the hint indicates. This patch fixes
an issue where loop unrolling could be disabled for other loops as well which
share the same llvm.loop metadata.
llvm-svn: 213900
Diffstat (limited to 'llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp index 2e94a44cad7..3f12209e144 100644 --- a/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp +++ b/llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp @@ -302,7 +302,6 @@ static void SetLoopAlreadyUnrolled(Loop *L) { // Set operand 0 to refer to the loop id itself. NewLoopID->replaceOperandWith(0, NewLoopID); L->setLoopID(NewLoopID); - LoopID->replaceAllUsesWith(NewLoopID); } unsigned LoopUnroll::selectUnrollCount( |
