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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 | d04d152998a56e3ab266dec7296f72694d34f0c5 (patch) | |
| tree | 68cc962be087ff117a4f5c674daac02c9d7a5992 /llvm/lib/CodeGen/TargetInstrInfoImpl.cpp | |
| parent | 5895fa79d62e5b769a64d7668fbc43594479fb82 (diff) | |
| download | bcm5719-llvm-d04d152998a56e3ab266dec7296f72694d34f0c5.tar.gz bcm5719-llvm-d04d152998a56e3ab266dec7296f72694d34f0c5.zip | |
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.
llvm-svn: 146245
Diffstat (limited to 'llvm/lib/CodeGen/TargetInstrInfoImpl.cpp')
0 files changed, 0 insertions, 0 deletions
