| Benjamin Kramer | 4145c0d | 2011-04-28 16:58:40 +0000 | [diff] [blame^] | 1 | ; RUN: opt -S -instcombine < %s | FileCheck %s |
| 2 | |
| 3 | define i1 @test1(i16* %x) { |
| 4 | %load = load i16* %x, align 4 |
| 5 | %trunc = trunc i16 %load to i8 |
| 6 | %cmp1 = icmp eq i8 %trunc, 127 |
| 7 | %and = and i16 %load, -256 |
| 8 | %cmp2 = icmp eq i16 %and, 17664 |
| 9 | %or = and i1 %cmp1, %cmp2 |
| 10 | ret i1 %or |
| 11 | ; CHECK: @test1 |
| 12 | ; CHECK-NEXT: load i16 |
| 13 | ; CHECK-NEXT: icmp eq i16 %load, 17791 |
| 14 | ; CHECK-NEXT: ret i1 |
| 15 | } |
| 16 | |
| 17 | define i1 @test2(i16* %x) { |
| 18 | %load = load i16* %x, align 4 |
| 19 | %and = and i16 %load, -256 |
| 20 | %cmp1 = icmp eq i16 %and, 32512 |
| 21 | %trunc = trunc i16 %load to i8 |
| 22 | %cmp2 = icmp eq i8 %trunc, 69 |
| 23 | %or = and i1 %cmp1, %cmp2 |
| 24 | ret i1 %or |
| 25 | ; CHECK: @test2 |
| 26 | ; CHECK-NEXT: load i16 |
| 27 | ; CHECK-NEXT: icmp eq i16 %load, 32581 |
| 28 | ; CHECK-NEXT: ret i1 |
| 29 | } |