# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn -mcpu=fiji -verify-machineinstrs -run-pass=si-lower-control-flow -o - %s | FileCheck %s
# Test si-lower-control-flow insertion points when other terminator
# instructions are present besides the control flow pseudo and a
# branch.
# There's another terminator instruction between SI_IF and
# S_BRANCH. The S_CBRANCH_EXECZ should be inserted immediately before
# S_BRANCH.
---
name: other_terminator_sbranch_after_si_if
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: other_terminator_sbranch_after_si_if
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $vgpr0, $vgpr1, $sgpr4_sgpr5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:sreg_64_xexec = COPY $sgpr4_sgpr5
; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 0, [[COPY]], implicit $exec
; CHECK-NEXT: [[COPY2:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY2]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
; CHECK-NEXT: [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY2]], implicit-def dead $scc
; CHECK-NEXT: $exec = S_MOV_B64_term killed [[S_AND_B64_]]
; CHECK-NEXT: [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term killed [[COPY1]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: S_ENDPGM 0, implicit [[S_MOV_B64_term]]
bb.0:
successors: %bb.2, %bb.1
liveins: $vgpr0, $vgpr1, $sgpr4_sgpr5
%0:vgpr_32 = COPY killed $vgpr0
%1:sreg_64_xexec = COPY $sgpr4_sgpr5
%2:sreg_64_xexec = V_CMP_EQ_U32_e64 0, %0, implicit $exec
%3:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
%4:sreg_64_xexec = S_MOV_B64_term killed %1, implicit $exec
S_BRANCH %bb.2
bb.1:
S_BRANCH %bb.2
bb.2:
S_ENDPGM 0, implicit %4
...
# S_CBRANCH_EXECZ should be inserted after the other terminator
---
name: other_terminator_fallthrough_after_si_if
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: other_terminator_fallthrough_after_si_if
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $vgpr0, $vgpr1, $sgpr4_sgpr5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:sreg_64_xexec = COPY $sgpr4_sgpr5
; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 0, [[COPY]], implicit $exec
; CHECK-NEXT: [[COPY2:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY2]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
; CHECK-NEXT: [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY2]], implicit-def dead $scc
; CHECK-NEXT: $exec = S_MOV_B64_term killed [[S_AND_B64_]]
; CHECK-NEXT: [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term killed [[COPY1]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.2, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: S_ENDPGM 0, implicit [[S_MOV_B64_term]]
bb.0:
successors: %bb.2, %bb.1
liveins: $vgpr0, $vgpr1, $sgpr4_sgpr5
%0:vgpr_32 = COPY killed $vgpr0
%1:sreg_64_xexec = COPY $sgpr4_sgpr5
%2:sreg_64_xexec = V_CMP_EQ_U32_e64 0, %0, implicit $exec
%3:sreg_64_xexec = SI_IF %2, %bb.2, implicit-def $exec, implicit-def dead $scc, implicit $exec
%4:sreg_64_xexec = S_MOV_B64_term killed %1, implicit $exec
bb.1:
S_BRANCH %bb.2
bb.2:
S_ENDPGM 0, implicit %4
...
---
name: other_terminator_sbranch_after_si_else
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: other_terminator_sbranch_after_si_else
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $vgpr0, $vgpr1, $sgpr4_sgpr5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[S_OR_SAVEEXEC_B64_:%[0-9]+]]:sreg_64 = S_OR_SAVEEXEC_B64 %2, implicit-def $exec, implicit-def $scc, implicit $exec
; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:sreg_64_xexec = COPY $sgpr4_sgpr5
; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 0, [[COPY]], implicit $exec
; CHECK-NEXT: [[S_AND_B64_:%[0-9]+]]:sreg_64_xexec = S_AND_B64 $exec, [[S_OR_SAVEEXEC_B64_]], implicit-def $scc
; CHECK-NEXT: $exec = S_XOR_B64_term $exec, [[S_AND_B64_]], implicit-def $scc
; CHECK-NEXT: [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term killed [[COPY1]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: S_ENDPGM 0, implicit [[S_MOV_B64_term]]
bb.0:
successors: %bb.2, %bb.1
liveins: $vgpr0, $vgpr1, $sgpr4_sgpr5
%0:vgpr_32 = COPY killed $vgpr0
%1:sreg_64_xexec = COPY $sgpr4_sgpr5
%2:sreg_64_xexec = V_CMP_EQ_U32_e64 0, %0, implicit $exec
%3:sreg_64_xexec = SI_ELSE %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
%4:sreg_64_xexec = S_MOV_B64_term killed %1, implicit $exec
S_BRANCH %bb.2
bb.1:
S_BRANCH %bb.2
bb.2:
S_ENDPGM 0, implicit %4
...
---
name: other_terminator_sbranch_after_si_loop
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: other_terminator_sbranch_after_si_loop
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $vgpr0, $vgpr1, $sgpr4_sgpr5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:sreg_64_xexec = COPY $sgpr4_sgpr5
; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 0, [[COPY]], implicit $exec
; CHECK-NEXT: $exec = S_ANDN2_B64_term $exec, [[V_CMP_EQ_U32_e64_]], implicit-def $scc
; CHECK-NEXT: [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term killed [[COPY1]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECNZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: S_ENDPGM 0, implicit [[S_MOV_B64_term]]
bb.0:
successors: %bb.2, %bb.1
liveins: $vgpr0, $vgpr1, $sgpr4_sgpr5
%0:vgpr_32 = COPY killed $vgpr0
%1:sreg_64_xexec = COPY $sgpr4_sgpr5
%2:sreg_64_xexec = V_CMP_EQ_U32_e64 0, %0, implicit $exec
SI_LOOP %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
%4:sreg_64_xexec = S_MOV_B64_term killed %1, implicit $exec
S_BRANCH %bb.2
bb.1:
S_BRANCH %bb.2
bb.2:
S_ENDPGM 0, implicit %4
...
# The save exec result register of SI_IF is used by other terminators
# inserted to behave as a lowered phi. The output register of SI_IF
# was ignored, and the def was removed, so the S_MOV_B64_term uses
# would fail the verifier.
---
name: si_if_use
alignment: 1
legalized: true
regBankSelected: true
selected: true
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: si_if_use
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY killed $vgpr1
; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 killed [[COPY]], killed [[COPY1]], implicit $exec
; CHECK-NEXT: [[COPY2:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY2]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
; CHECK-NEXT: [[S_XOR_B64_:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_]], [[COPY2]], implicit-def dead $scc
; CHECK-NEXT: $exec = S_MOV_B64_term killed [[S_AND_B64_]]
; CHECK-NEXT: [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_]], implicit $exec
; CHECK-NEXT: [[S_MOV_B64_term1:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY3:%[0-9]+]]:sreg_64_xexec = COPY [[S_MOV_B64_term1]]
; CHECK-NEXT: dead [[GLOBAL_LOAD_DWORD:%[0-9]+]]:vgpr_32 = GLOBAL_LOAD_DWORD undef %8:vreg_64, 0, 0, implicit $exec :: (volatile load (s32), addrspace 1)
; CHECK-NEXT: [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = COPY [[COPY3]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY4:%[0-9]+]]:sreg_64_xexec = COPY [[S_MOV_B64_term]]
; CHECK-NEXT: $exec = S_OR_B64_term $exec, killed [[COPY4]], implicit-def $scc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_SLEEP 1
; CHECK-NEXT: [[COPY5:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_1:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY5]], [[V_CMP_EQ_U32_e64_]], implicit-def dead $scc
; CHECK-NEXT: [[S_XOR_B64_1:%[0-9]+]]:sreg_64_xexec = S_XOR_B64 [[S_AND_B64_1]], [[COPY5]], implicit-def dead $scc
; CHECK-NEXT: $exec = S_MOV_B64_term killed [[S_AND_B64_1]]
; CHECK-NEXT: [[S_MOV_B64_term:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_1]], implicit $exec
; CHECK-NEXT: [[S_MOV_B64_term1:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term [[S_XOR_B64_1]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.2
bb.0:
liveins: $vgpr0, $vgpr1, $sgpr30_sgpr31
%0:vgpr_32 = COPY killed $vgpr0
%1:vgpr_32 = COPY killed $vgpr1
%3:sreg_64_xexec = V_CMP_EQ_U32_e64 killed %0, killed %1, implicit $exec
%10:sreg_64_xexec = SI_IF %3, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
%14:sreg_64_xexec = S_MOV_B64_term %10, implicit $exec
%13:sreg_64_xexec = S_MOV_B64_term %10, implicit $exec
S_BRANCH %bb.2
bb.1:
%11:sreg_64_xexec = COPY %13
dead %6:vgpr_32 = GLOBAL_LOAD_DWORD undef %8:vreg_64, 0, 0, implicit $exec :: (volatile load (s32), addrspace 1)
%14:sreg_64_xexec = COPY %11
bb.2:
%12:sreg_64_xexec = COPY %14
SI_END_CF killed %12, implicit-def $exec, implicit-def dead $scc, implicit $exec
S_SLEEP 1
%9:sreg_64_xexec = SI_IF %3, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
%14:sreg_64_xexec = S_MOV_B64_term %9, implicit $exec
%13:sreg_64_xexec = S_MOV_B64_term %9, implicit $exec
S_BRANCH %bb.2
...
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