| Dan Gohman | 2c74fe9 | 2017-11-08 21:59:51 +0000 | [diff] [blame] | 1 | ; RUN: opt -S < %s -instcombine | FileCheck %s |
| 2 | |||||
| 3 | declare void @llvm.sideeffect() | ||||
| 4 | |||||
| 5 | ; Store-to-load forwarding across a @llvm.sideeffect. | ||||
| 6 | |||||
| 7 | ; CHECK-LABEL: s2l | ||||
| 8 | ; CHECK-NOT: load | ||||
| 9 | define float @s2l(float* %p) { | ||||
| 10 | store float 0.0, float* %p | ||||
| 11 | call void @llvm.sideeffect() | ||||
| 12 | %t = load float, float* %p | ||||
| 13 | ret float %t | ||||
| 14 | } | ||||