| ; RUN: llc -march=hexagon -debug-only=isel < %s 2>&1 | FileCheck %s |
| ; REQUIRES: asserts |
| |
| ; Check that we generate 'cmpb.gtu' instruction for a byte comparision |
| ; The "Optimized Lowered Selection" converts the "ugt with #40" to |
| ; "ult with #41". The immediate value should be decremented to #40 |
| ; with the selected cmpb.gtu pattern |
| ; CHECK: setcc{{.*}}41{{.*}}setult |
| ; CHECK: A4_cmpbgtui{{.*}}40 |
| |
| @glob = common global i8 0, align 1 |
| |
| define i32 @cmpgtudec(i32 %a0, i32 %a1) #0 { |
| b2: |
| %v3 = xor i32 %a1, %a0 |
| %v4 = and i32 %v3, 255 |
| %v5 = icmp ugt i32 %v4, 40 |
| br i1 %v5, label %b6, label %b8 |
| |
| b6: ; preds = %b2 |
| %v7 = trunc i32 %a0 to i8 |
| store i8 %v7, i8* @glob, align 1 |
| br label %b8 |
| |
| b8: ; preds = %b6, %b2 |
| %v9 = phi i32 [ 1, %b6 ], [ 0, %b2 ] |
| ret i32 %v9 |
| } |
| |
| attributes #0 = { nounwind } |
