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| author | Andrew Trick <atrick@apple.com> | 2011-12-09 06:19:40 +0000 |
|---|---|---|
| committer | Andrew Trick <atrick@apple.com> | 2011-12-09 06:19:40 +0000 |
| commit | 5d73448bb7f3d326f310e6f35030821b103b1cdb (patch) | |
| tree | 559f8f027346d2270472463686fa54187721d8d5 /include | |
| parent | 9c181a92d8bc7af36839520c3e145bf11a6193fa (diff) | |
| download | external_llvm-5d73448bb7f3d326f310e6f35030821b103b1cdb.zip external_llvm-5d73448bb7f3d326f310e6f35030821b103b1cdb.tar.gz external_llvm-5d73448bb7f3d326f310e6f35030821b103b1cdb.tar.bz2 | |
Add -unroll-runtime for unrolling loops with run-time trip counts.
Patch by Brendon Cahoon!
This extends the existing LoopUnroll and LoopUnrollPass. Brendon
measured no regressions in the llvm test suite with -unroll-runtime
enabled. This implementation works by using the existing loop
unrolling code to unroll the loop by a power-of-two (default 8). It
generates an if-then-else sequence of code prior to the loop to
execute the extra iterations before entering the unrolled loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146245 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
| -rw-r--r-- | include/llvm/Transforms/Utils/UnrollLoop.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/llvm/Transforms/Utils/UnrollLoop.h b/include/llvm/Transforms/Utils/UnrollLoop.h index 7212a8c..f175e83 100644 --- a/include/llvm/Transforms/Utils/UnrollLoop.h +++ b/include/llvm/Transforms/Utils/UnrollLoop.h @@ -22,9 +22,12 @@ class Loop; class LoopInfo; class LPPassManager; -bool UnrollLoop(Loop *L, unsigned Count, unsigned TripCount, +bool UnrollLoop(Loop *L, unsigned Count, unsigned TripCount, bool AllowRuntime, unsigned TripMultiple, LoopInfo* LI, LPPassManager* LPM); +bool UnrollRuntimeLoopProlog(Loop *L, unsigned Count, LoopInfo *LI, + LPPassManager* LPM); + } #endif |