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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass=simple-register-coalescing -o - %s | FileCheck %s
# Check that we get two move-immediates into %1 and %2, instead of a copy from
# %1 to %2, because that would introduce a dependency and maybe a stall.
---
name: f
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: f
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $sgpr0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: undef %4.sub0:vreg_96 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: %4.sub1:vreg_96 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[COPY:%[0-9]+]]:sreg_64 = COPY $sgpr0
; CHECK-NEXT: $exec = S_MOV_B64_term [[COPY]]
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.2, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: %4.sub0:vreg_96 = V_MUL_F32_e32 %4.sub0, %4.sub0, implicit $mode, implicit $exec
; CHECK-NEXT: %4.sub1:vreg_96 = V_MUL_F32_e32 %4.sub1, %4.sub1, implicit $mode, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: S_ENDPGM 0, implicit %4
bb.0:
liveins: $sgpr0
%0:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%1:vgpr_32 = COPY %0:vgpr_32
%2:vgpr_32 = COPY %0:vgpr_32
%3:sreg_64 = COPY $sgpr0
$exec = S_MOV_B64_term %3:sreg_64
S_CBRANCH_EXECZ %bb.2, implicit $exec
S_BRANCH %bb.1
bb.1:
%1:vgpr_32 = V_MUL_F32_e32 %1:vgpr_32, %1:vgpr_32, implicit $mode, implicit $exec
%2:vgpr_32 = V_MUL_F32_e32 %2:vgpr_32, %2:vgpr_32, implicit $mode, implicit $exec
bb.2:
undef %4.sub0:vreg_96 = COPY %1:vgpr_32
%4.sub1:vreg_96 = COPY %2:vgpr_32
S_ENDPGM 0, implicit %4
...
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