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| author | Matthijs Kooijman <matthijs@stdin.nl> | 2008-07-29 13:21:23 +0000 |
|---|---|---|
| committer | Matthijs Kooijman <matthijs@stdin.nl> | 2008-07-29 13:21:23 +0000 |
| commit | 75cf9cc527c6ef3097dcefab173e93716a5a3e4a (patch) | |
| tree | 9c95bee90db4b4e34d7baf49feb2ac05cafe00d8 /test/Transforms/LoopUnroll | |
| parent | 477f5a2f11a0383b4ecfcb0db2913027ed38ee39 (diff) | |
| download | llvm-75cf9cc527c6ef3097dcefab173e93716a5a3e4a.tar.gz llvm-75cf9cc527c6ef3097dcefab173e93716a5a3e4a.tar.bz2 llvm-75cf9cc527c6ef3097dcefab173e93716a5a3e4a.tar.xz | |
Add -unroll-allow-partial command line option that enabled the loop unroller to
partially unroll a loop when fully unrolling would not fit under the threshold.
Patch by Mikael Lepistö.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54160 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/LoopUnroll')
| -rw-r--r-- | test/Transforms/LoopUnroll/partial.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/Transforms/LoopUnroll/partial.ll b/test/Transforms/LoopUnroll/partial.ll new file mode 100644 index 0000000000..26da82b3b2 --- /dev/null +++ b/test/Transforms/LoopUnroll/partial.ll @@ -0,0 +1,15 @@ +; RUN: llvm-as < %s | opt -debug -loop-unroll |& grep {will not try to unroll partially because} +; RUN: llvm-as < %s | opt -debug -loop-unroll -unroll-allow-partial |& grep {partially unrolling with count} +; RUN: llvm-as < %s | opt -debug -loop-unroll -unroll-allow-partial -unroll-threshold=3 |& grep {could not unroll partially} + +define i32 @main() { +entry: + br label %no_exit +no_exit: ; preds = %no_exit, %entry + %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ] ; <i32> [#uses=1] + %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2] + %exitcond = icmp ne i32 %indvar.next, 100 ; <i1> [#uses=1] + br i1 %exitcond, label %no_exit, label %loopexit +loopexit: ; preds = %no_exit + ret i32 0 +} |