| Evan Cheng | c3f507f | 2011-01-29 04:46:23 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -jump-threading -mem2reg -instcombine -simplifycfg -S | FileCheck %s |
| Chris Lattner | 6bf7750 | 2008-04-22 07:05:46 +0000 | [diff] [blame] | 2 | |
| 3 | declare i32 @f1() |
| 4 | declare i32 @f2() |
| 5 | declare void @f3() |
| 6 | |
| 7 | define i32 @test(i1 %cond, i1 %cond2) { |
| Evan Cheng | c3f507f | 2011-01-29 04:46:23 +0000 | [diff] [blame] | 8 | ; CHECK: test |
| Chris Lattner | 6bf7750 | 2008-04-22 07:05:46 +0000 | [diff] [blame] | 9 | br i1 %cond, label %T1, label %F1 |
| 10 | |
| Evan Cheng | c3f507f | 2011-01-29 04:46:23 +0000 | [diff] [blame] | 11 | ; CHECK-NOT: T1 |
| Chris Lattner | 6bf7750 | 2008-04-22 07:05:46 +0000 | [diff] [blame] | 12 | T1: |
| 13 | %v1 = call i32 @f1() |
| 14 | br label %Merge |
| 15 | |
| 16 | F1: |
| 17 | %v2 = call i32 @f2() |
| 18 | br label %Merge |
| 19 | |
| 20 | Merge: |
| Evan Cheng | c3f507f | 2011-01-29 04:46:23 +0000 | [diff] [blame] | 21 | ; CHECK: Merge: |
| 22 | ; CHECK: %v1 = call i32 @f1() |
| 23 | ; CHECK-NEXT: br i1 %cond2 |
| Chris Lattner | 6bf7750 | 2008-04-22 07:05:46 +0000 | [diff] [blame] | 24 | %A = phi i1 [true, %T1], [false, %F1] |
| 25 | %B = phi i32 [%v1, %T1], [%v2, %F1] |
| 26 | %C = and i1 %A, %cond2 |
| 27 | br i1 %C, label %T2, label %F2 |
| 28 | |
| 29 | T2: |
| 30 | call void @f3() |
| 31 | ret i32 %B |
| 32 | |
| 33 | F2: |
| 34 | ret i32 %B |
| 35 | } |