1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2 # RUN: llc -march=amdgcn -mcpu=gfx900 -verify-machineinstrs -run-pass si-fold-operands %s -o - | FileCheck %s
4 # Check that the addc instructions are commuted to allow folding of the constant
5 # 0 into multiple uses as an inline operand.
8 tracksRegLiveness: true
11 liveins: $vgpr0, $vgpr1, $vcc
12 ; CHECK-LABEL: name: test_commute
13 ; CHECK: liveins: $vgpr0, $vgpr1, $vcc
15 ; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
16 ; CHECK-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY $vgpr1
17 ; CHECK-NEXT: [[V_ADDC_U32_e32_:%[0-9]+]]:vgpr_32 = V_ADDC_U32_e32 0, [[COPY]], implicit-def $vcc, implicit $vcc, implicit $exec
18 ; CHECK-NEXT: [[V_ADDC_U32_e32_1:%[0-9]+]]:vgpr_32 = V_ADDC_U32_e32 0, [[COPY1]], implicit-def $vcc, implicit $vcc, implicit $exec
19 ; CHECK-NEXT: S_NOP 0, implicit [[V_ADDC_U32_e32_]], implicit [[V_ADDC_U32_e32_1]]
20 %0:vgpr_32 = COPY $vgpr0
21 %1:vgpr_32 = COPY $vgpr1
22 %2:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
23 %3:vgpr_32 = V_ADDC_U32_e32 %0, %2, implicit-def $vcc, implicit $vcc, implicit $exec
24 %4:vgpr_32 = V_ADDC_U32_e32 %1, %2, implicit-def $vcc, implicit $vcc, implicit $exec
25 S_NOP 0, implicit %3, implicit %4