| ; RUN: opt < %s -jump-threading -mem2reg -instcombine -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s | |
| declare i32 @f1() | |
| declare i32 @f2() | |
| declare void @f3() | |
| define i32 @test(i1 %cond, i1 %cond2) { | |
| ; CHECK: test | |
| br i1 %cond, label %T1, label %F1 | |
| ; CHECK-NOT: T1 | |
| T1: | |
| %v1 = call i32 @f1() | |
| br label %Merge | |
| F1: | |
| %v2 = call i32 @f2() | |
| br label %Merge | |
| Merge: | |
| ; CHECK: Merge: | |
| ; CHECK: %v1 = call i32 @f1() | |
| ; CHECK-NEXT: br i1 %cond2 | |
| %A = phi i1 [true, %T1], [false, %F1] | |
| %B = phi i32 [%v1, %T1], [%v2, %F1] | |
| %C = and i1 %A, %cond2 | |
| br i1 %C, label %T2, label %F2 | |
| T2: | |
| call void @f3() | |
| ret i32 %B | |
| F2: | |
| ret i32 %B | |
| } |