| ; 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 |
| } |
