| Chris Lattner | 813fc42 | 2009-09-15 06:34:29 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -constprop -die -S | FileCheck %s |
| 2 | |
| Chris Lattner | 4f53850 | 2002-05-03 20:12:31 +0000 | [diff] [blame] | 3 | ; This is a basic sanity check for constant propogation. The add instruction |
| 4 | ; should be eliminated. |
| Chris Lattner | 813fc42 | 2009-09-15 06:34:29 +0000 | [diff] [blame] | 5 | define i32 @test1(i1 %B) { |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 6 | br i1 %B, label %BB1, label %BB2 |
| 7 | |
| Chris Lattner | 813fc42 | 2009-09-15 06:34:29 +0000 | [diff] [blame] | 8 | BB1: |
| 9 | %Val = add i32 0, 0 |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 10 | br label %BB3 |
| 11 | |
| Chris Lattner | 813fc42 | 2009-09-15 06:34:29 +0000 | [diff] [blame] | 12 | BB2: |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 13 | br label %BB3 |
| 14 | |
| Chris Lattner | 813fc42 | 2009-09-15 06:34:29 +0000 | [diff] [blame] | 15 | BB3: |
| 16 | ; CHECK: @test1 |
| 17 | ; CHECK: %Ret = phi i32 [ 0, %BB1 ], [ 1, %BB2 ] |
| 18 | %Ret = phi i32 [ %Val, %BB1 ], [ 1, %BB2 ] |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 19 | ret i32 %Ret |
| Chris Lattner | 50e8682 | 2003-06-28 23:23:34 +0000 | [diff] [blame] | 20 | } |
| Tanya Lattner | ec9a35a | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 21 | |
| Chris Lattner | b63127d | 2010-02-01 19:35:08 +0000 | [diff] [blame] | 22 | |
| 23 | ; PR6197 |
| 24 | define i1 @test2(i8* %f) nounwind { |
| 25 | entry: |
| 26 | %V = icmp ne i8* blockaddress(@test2, %bb), null |
| 27 | br label %bb |
| 28 | bb: |
| 29 | ret i1 %V |
| 30 | |
| 31 | ; CHECK: @test2 |
| 32 | ; CHECK: ret i1 true |
| 33 | } |