| Sanjoy Das | 679bc32 | 2017-01-17 05:45:09 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -instcombine < %s | FileCheck %s |
| 2 | |
| 3 | declare void @readnone_but_may_throw() readnone |
| 4 | |
| 5 | define void @f_0(i32* %ptr) { |
| 6 | ; CHECK-LABEL: @f_0( |
| 7 | entry: |
| 8 | ; CHECK: store i32 10, i32* %ptr |
| 9 | ; CHECK-NEXT: call void @readnone_but_may_throw() |
| 10 | ; CHECK-NEXT: store i32 20, i32* %ptr, align 4 |
| 11 | ; CHECK: ret void |
| 12 | |
| 13 | store i32 10, i32* %ptr |
| 14 | call void @readnone_but_may_throw() |
| 15 | store i32 20, i32* %ptr |
| 16 | ret void |
| 17 | } |
| 18 | |
| 19 | define void @f_1(i1 %cond, i32* %ptr) { |
| 20 | ; CHECK-LABEL: @f_1( |
| 21 | ; CHECK: store i32 10, i32* %ptr |
| 22 | ; CHECK-NEXT: call void @readnone_but_may_throw() |
| 23 | |
| 24 | store i32 10, i32* %ptr |
| 25 | call void @readnone_but_may_throw() |
| 26 | br i1 %cond, label %left, label %merge |
| 27 | |
| 28 | left: |
| 29 | store i32 20, i32* %ptr |
| 30 | br label %merge |
| 31 | |
| 32 | merge: |
| 33 | ret void |
| 34 | } |