| ; RUN: opt < %s -gvn -enable-pre -jump-threading -S | FileCheck %s |
| |
| @H = common global i32 0 |
| @G = common global i32 0 |
| |
| define i32 @test(i1 %cond, i32 %v) nounwind { |
| ; CHECK-LABEL: @test |
| entry: |
| br i1 %cond, label %bb, label %bb1 |
| |
| bb: |
| ; CHECK: store |
| ; CHECK-NOT: br label %return |
| %add.1 = add nuw nsw i32 %v, -1 |
| store i32 %add.1, i32* @G, align 4 |
| br label %merge |
| |
| bb1: |
| br label %merge |
| |
| merge: |
| %add.2 = add i32 %v, -1 |
| %cmp = icmp sgt i32 %add.2, 0 |
| br i1 %cmp, label %action, label %return |
| |
| action: |
| ; CHECK: store |
| ; CHECK-NEXT: br label %return |
| store i32 %add.2, i32* @H, align 4 |
| br label %return |
| |
| return: |
| %p = phi i32 [0, %merge], [1, %action] |
| ret i32 %p |
| } |
| |