diff options
| 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 /lib/Transforms/Scalar/LoopUnswitch.cpp | |
| parent | 9c181a92d8bc7af36839520c3e145bf11a6193fa (diff) | |
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 'lib/Transforms/Scalar/LoopUnswitch.cpp')
0 files changed, 0 insertions, 0 deletions