| Krzysztof Parzyszek | a0f2f7c | 2017-10-13 15:43:12 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=hexagon < %s | FileCheck %s |
| 2 | |
| 3 | ; Check that we generate 'cmph.gtu' instruction. |
| 4 | ; CHECK-LABEL: @cmphgtu |
| 5 | ; CHECK: cmph.gtu |
| 6 | |
| 7 | @glob = common global i8 0, align 1 |
| 8 | |
| 9 | define i32 @cmphgtu(i32 %a0, i32 %a1) #0 { |
| 10 | b2: |
| 11 | %v3 = xor i32 %a1, %a0 |
| 12 | %v4 = and i32 %v3, 65535 |
| 13 | %v5 = icmp ugt i32 %v4, 40 |
| 14 | br i1 %v5, label %b6, label %b8 |
| 15 | |
| 16 | b6: ; preds = %b2 |
| 17 | %v7 = trunc i32 %a0 to i8 |
| 18 | store i8 %v7, i8* @glob, align 1 |
| 19 | br label %b8 |
| 20 | |
| 21 | b8: ; preds = %b6, %b2 |
| 22 | %v9 = phi i32 [ 1, %b6 ], [ 0, %b2 ] |
| 23 | ret i32 %v9 |
| 24 | } |
| 25 | |
| 26 | ; With zxtb, we must not generate a cmph.gtu instruction. |
| 27 | ; CHECK-LABEL: @nocmphgtu |
| 28 | ; CHECK-NOT: cmph.gtu |
| 29 | define i32 @nocmphgtu(i32 %a0, i32 %a1) #0 { |
| 30 | b2: |
| 31 | %v3 = xor i32 %a1, %a0 |
| 32 | %v4 = and i32 %v3, 255 |
| 33 | %v5 = icmp ugt i32 %v4, 40 |
| 34 | br i1 %v5, label %b6, label %b8 |
| 35 | |
| 36 | b6: ; preds = %b2 |
| 37 | %v7 = trunc i32 %a0 to i8 |
| 38 | store i8 %v7, i8* @glob, align 1 |
| 39 | br label %b8 |
| 40 | |
| 41 | b8: ; preds = %b6, %b2 |
| 42 | %v9 = phi i32 [ 1, %b6 ], [ 0, %b2 ] |
| 43 | ret i32 %v9 |
| 44 | } |
| 45 | |
| 46 | attributes #0 = { nounwind } |