diff options
| author | Eric Christopher <echristo@gmail.com> | 2019-04-17 04:52:47 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@gmail.com> | 2019-04-17 04:52:47 +0000 |
| commit | cee313d288a4faf0355d76fb6e0e927e211d08a5 (patch) | |
| tree | d386075318d761197779a96e5d8fc0dc7b06342b /llvm/test/Transforms/LoopStrengthReduce/exit_compare_live_range.ll | |
| parent | c3d6a929fdd92fd06d4304675ade8d7210ee711a (diff) | |
| download | bcm5719-llvm-cee313d288a4faf0355d76fb6e0e927e211d08a5.tar.gz bcm5719-llvm-cee313d288a4faf0355d76fb6e0e927e211d08a5.zip | |
Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.
Will be re-reverting again.
llvm-svn: 358552
Diffstat (limited to 'llvm/test/Transforms/LoopStrengthReduce/exit_compare_live_range.ll')
| -rw-r--r-- | llvm/test/Transforms/LoopStrengthReduce/exit_compare_live_range.ll | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopStrengthReduce/exit_compare_live_range.ll b/llvm/test/Transforms/LoopStrengthReduce/exit_compare_live_range.ll new file mode 100644 index 00000000000..498be1a9a1a --- /dev/null +++ b/llvm/test/Transforms/LoopStrengthReduce/exit_compare_live_range.ll @@ -0,0 +1,21 @@ +; Make sure that the compare instruction occurs after the increment to avoid +; having overlapping live ranges that result in copies. We want the setcc +; instruction immediately before the conditional branch. +; +; RUN: opt -S -loop-reduce < %s | FileCheck %s + +define void @foo(float* %D, i32 %E) { +entry: + br label %no_exit +no_exit: ; preds = %no_exit, %entry + %indvar = phi i32 [ 0, %entry ], [ %indvar.next, %no_exit ] ; <i32> [#uses=1] + store volatile float 0.000000e+00, float* %D + %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=2] +; CHECK: icmp +; CHECK-NEXT: br i1 + %exitcond = icmp eq i32 %indvar.next, %E ; <i1> [#uses=1] + br i1 %exitcond, label %loopexit, label %no_exit +loopexit: ; preds = %no_exit + ret void +} + |
