| Krzysztof Parzyszek | a0f2f7c | 2017-10-13 15:43:12 +0000 | [diff] [blame] | 1 | ; RUN: llc -march=hexagon -debug-only=isel < %s 2>&1 | FileCheck %s |
| 2 | ; REQUIRES: asserts |
| 3 | |
| 4 | ; Check that we generate 'cmpb.gtu' instruction for a byte comparision |
| 5 | ; The "Optimized Lowered Selection" converts the "ugt with #40" to |
| 6 | ; "ult with #41". The immediate value should be decremented to #40 |
| 7 | ; with the selected cmpb.gtu pattern |
| 8 | ; CHECK: setcc{{.*}}41{{.*}}setult |
| 9 | ; CHECK: A4_cmpbgtui{{.*}}40 |
| 10 | |
| 11 | @glob = common global i8 0, align 1 |
| 12 | |
| 13 | define i32 @cmpgtudec(i32 %a0, i32 %a1) #0 { |
| 14 | b2: |
| 15 | %v3 = xor i32 %a1, %a0 |
| 16 | %v4 = and i32 %v3, 255 |
| 17 | %v5 = icmp ugt i32 %v4, 40 |
| 18 | br i1 %v5, label %b6, label %b8 |
| 19 | |
| 20 | b6: ; preds = %b2 |
| 21 | %v7 = trunc i32 %a0 to i8 |
| 22 | store i8 %v7, i8* @glob, align 1 |
| 23 | br label %b8 |
| 24 | |
| 25 | b8: ; preds = %b6, %b2 |
| 26 | %v9 = phi i32 [ 1, %b6 ], [ 0, %b2 ] |
| 27 | ret i32 %v9 |
| 28 | } |
| 29 | |
| 30 | attributes #0 = { nounwind } |