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| author | Sanjoy Das <sanjoy@playingwithpointers.com> | 2015-02-18 19:32:25 +0000 |
|---|---|---|
| committer | Sanjoy Das <sanjoy@playingwithpointers.com> | 2015-02-18 19:32:25 +0000 |
| commit | 11b279a832b26214d2441fec3abf98ab97b00bce (patch) | |
| tree | 412f6ade80023bc4f8efe334c9f58db16ab084c2 /llvm/test/Transforms/LoopUnroll/runtime-loop.ll | |
| parent | 99f0215be8ebc14fa53c164583f1e08c0863b01a (diff) | |
| download | bcm5719-llvm-11b279a832b26214d2441fec3abf98ab97b00bce.tar.gz bcm5719-llvm-11b279a832b26214d2441fec3abf98ab97b00bce.zip | |
Partial fix for bug 22589
Don't spend the entire iteration space in the scalar loop prologue if
computing the trip count overflows. This change also gets rid of the
backedge check in the prologue loop and the extra check for
overflowing trip-count.
Differential Revision: http://reviews.llvm.org/D7715
llvm-svn: 229731
Diffstat (limited to 'llvm/test/Transforms/LoopUnroll/runtime-loop.ll')
| -rw-r--r-- | llvm/test/Transforms/LoopUnroll/runtime-loop.ll | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/llvm/test/Transforms/LoopUnroll/runtime-loop.ll b/llvm/test/Transforms/LoopUnroll/runtime-loop.ll index 3a8777bb147..80571ecbd88 100644 --- a/llvm/test/Transforms/LoopUnroll/runtime-loop.ll +++ b/llvm/test/Transforms/LoopUnroll/runtime-loop.ll @@ -4,9 +4,7 @@ ; CHECK: %xtraiter = and i32 %n ; CHECK: %lcmp.mod = icmp ne i32 %xtraiter, 0 -; CHECK: %lcmp.overflow = icmp eq i32 %n, 0 -; CHECK: %lcmp.or = or i1 %lcmp.overflow, %lcmp.mod -; CHECK: br i1 %lcmp.or, label %for.body.prol, label %for.body.preheader.split +; CHECK: br i1 %lcmp.mod, label %for.body.prol, label %for.body.preheader.split ; CHECK: for.body.prol: ; CHECK: %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %for.body.prol ], [ 0, %for.body.preheader ] |
