diff options
Diffstat (limited to 'llvm/test/Transforms/LoopIdiom')
| -rw-r--r-- | llvm/test/Transforms/LoopIdiom/int_sideeffect.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/llvm/test/Transforms/LoopIdiom/int_sideeffect.ll b/llvm/test/Transforms/LoopIdiom/int_sideeffect.ll new file mode 100644 index 00000000000..40acf3cbe2a --- /dev/null +++ b/llvm/test/Transforms/LoopIdiom/int_sideeffect.ll @@ -0,0 +1,23 @@ +; RUN: opt -S < %s -loop-idiom | FileCheck %s + +declare void @llvm.sideeffect() + +; Loop idiom recognition across a @llvm.sideeffect. + +; CHECK-LABEL: zero +; CHECK: llvm.memset +define void @zero(float* %p, i64 %n) nounwind { +bb7.lr.ph: + br label %bb7 + +bb7: + %i.02 = phi i64 [ 0, %bb7.lr.ph ], [ %tmp13, %bb7 ] + %tmp10 = getelementptr inbounds float, float* %p, i64 %i.02 + store float 0.000000e+00, float* %tmp10, align 4 + %tmp13 = add i64 %i.02, 1 + %tmp6 = icmp ult i64 %tmp13, %n + br i1 %tmp6, label %bb7, label %bb14 + +bb14: + ret void +} |
