# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-regalloc -start-before=machine-scheduler -stop-after=greedy,0 -o - %s | FileCheck %s
# Make sure liveness is correctly updated when folding the cndmask and
# compare.
---
name: cndmask_same_block
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_same_block
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF]], implicit-def $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
bb.0:
%0:sreg_64_xexec = IMPLICIT_DEF
S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
bb.1:
S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
S_BRANCH %bb.4
bb.2:
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %2, implicit-def $scc
S_CBRANCH_VCCNZ %bb.4, implicit $vcc
S_BRANCH %bb.3
bb.3:
S_BRANCH %bb.4
bb.4:
...
---
name: cndmask_separate_block
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_separate_block
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF]], implicit-def $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
bb.0:
%0:sreg_64_xexec = IMPLICIT_DEF
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
bb.1:
S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
S_BRANCH %bb.4
bb.2:
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %2, implicit-def $scc
S_CBRANCH_VCCNZ %bb.4, implicit $vcc
S_BRANCH %bb.3
bb.3:
S_BRANCH %bb.4
bb.4:
...
---
name: cndmask_same_block_other_cmpreg_use
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_same_block_other_cmpreg_use
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[DEF]], implicit $exec
; CHECK-NEXT: [[V_CMP_NE_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_NE_U32_e64 1, [[V_CNDMASK_B32_e64_]], implicit $exec
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF]], implicit-def $scc
; CHECK-NEXT: S_NOP 0, implicit [[V_CMP_NE_U32_e64_]]
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
bb.0:
%0:sreg_64_xexec = IMPLICIT_DEF
S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
bb.1:
S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
S_BRANCH %bb.4
bb.2:
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
S_NOP 0, implicit %2
$vcc = S_AND_B64 $exec, %2, implicit-def $scc
S_CBRANCH_VCCNZ %bb.4, implicit $vcc
S_BRANCH %bb.3
bb.3:
S_BRANCH %bb.4
bb.4:
...
---
name: cndmask_same_block_liveout_use
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_same_block_liveout_use
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[DEF]], implicit $exec
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF]], implicit-def $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit [[V_CNDMASK_B32_e64_]]
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
bb.0:
%0:sreg_64_xexec = IMPLICIT_DEF
S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
bb.1:
S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
S_BRANCH %bb.4
bb.2:
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %2, implicit-def $scc
S_CBRANCH_VCCNZ %bb.4, implicit $vcc
S_BRANCH %bb.3
bb.3:
S_NOP 0, implicit %1
S_BRANCH %bb.4
bb.4:
...
# The legality check for removing the compare used to rely on
# use_nodbg_empty, which fails on the undef use of %2. We would then
# fail to update the interval correctly.
---
name: cmp_reg_extra_undef_use
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cmp_reg_extra_undef_use
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, undef %1:sreg_64_xexec, implicit-def dead $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_AND_B64 $exec, undef %2:sreg_64_xexec, implicit-def dead $scc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
bb.0:
%0:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, undef %1:sreg_64_xexec, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %0, implicit $exec
$vcc = S_AND_B64 $exec, %2, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.3, implicit killed $vcc
bb.1:
$vcc = S_AND_B64 $exec, undef %2, implicit-def dead $scc
bb.3:
...
# use_nodbg_empty is insufficient for erasing %1's def when removing
# V_CNDMASK_B32.
---
name: cndmask_undef_extra_use
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_undef_extra_use
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[DEF]], implicit $exec
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF]], implicit-def $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit undef [[V_CNDMASK_B32_e64_]]
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
bb.0:
%0:sreg_64_xexec = IMPLICIT_DEF
S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
bb.1:
S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
S_BRANCH %bb.4
bb.2:
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %2, implicit-def $scc
S_CBRANCH_VCCNZ %bb.4, implicit $vcc
S_BRANCH %bb.3
bb.3:
S_NOP 0, implicit undef %1
S_BRANCH %bb.4
bb.4:
...
---
name: cndmask_is_undef
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_is_undef
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: dead [[S_MOV_B64_:%[0-9]+]]:sreg_64_xexec = S_MOV_B64 0
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, undef [[S_MOV_B64_]], implicit-def $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.4
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
bb.0:
%0:sreg_64_xexec = S_MOV_B64 0
S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
bb.1:
S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
S_BRANCH %bb.4
bb.2:
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, undef %0, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %2, implicit-def $scc
S_CBRANCH_VCCNZ %bb.4, implicit $vcc
S_BRANCH %bb.3
bb.3:
S_BRANCH %bb.4
bb.4:
...
# Liveness of V_CNDMASK_B32 source (%0) must be extended through loop.
---
name: cndmask_loop_cndmask
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_loop_cndmask
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
; CHECK-NEXT: [[DEF1:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_32 = S_ADD_I32 [[DEF]], -1, implicit-def $scc
; CHECK-NEXT: S_CBRANCH_SCC0 %bb.4, implicit $scc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF1]], implicit-def $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
bb.0:
%0:sreg_64_xexec = IMPLICIT_DEF
%1:sreg_32 = IMPLICIT_DEF
%2:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
S_CBRANCH_VCCNZ %bb.2, implicit undef $vcc
bb.1:
%1:sreg_32 = S_ADD_I32 %1, -1, implicit-def $scc
S_CBRANCH_SCC0 %bb.4, implicit $scc
bb.2:
%4:sreg_64_xexec = V_CMP_NE_U32_e64 1, %2, implicit $exec
$vcc = S_AND_B64 $exec, %4, implicit-def $scc
S_CBRANCH_VCCNZ %bb.4, implicit $vcc
S_BRANCH %bb.3
bb.3:
S_BRANCH %bb.1
bb.4:
...
---
name: cndmask_loop_cndmask_split
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_loop_cndmask_split
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = IMPLICIT_DEF
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
; CHECK-NEXT: [[DEF1:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: S_CBRANCH_VCCZ %bb.1, implicit $vcc
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.5(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF1]], implicit-def $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.5(0x40000000), %bb.4(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_32 = S_ADD_I32 [[DEF]], -1, implicit-def $scc
; CHECK-NEXT: S_CBRANCH_SCC0 %bb.5, implicit $scc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5:
bb.0:
$vcc = IMPLICIT_DEF
%0:sreg_64_xexec = IMPLICIT_DEF
%1:sreg_32 = IMPLICIT_DEF
%2:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
S_CBRANCH_VCCZ %bb.5, implicit $vcc
S_BRANCH %bb.1
bb.5:
S_BRANCH %bb.4
bb.1:
%4:sreg_64_xexec = V_CMP_NE_U32_e64 1, %2, implicit $exec
$vcc = S_AND_B64 $exec, %4, implicit-def $scc
S_CBRANCH_VCCNZ %bb.3, implicit $vcc
bb.2:
%1:sreg_32 = S_ADD_I32 %1, -1, implicit-def $scc
S_CBRANCH_SCC0 %bb.4, implicit $scc
bb.3:
S_BRANCH %bb.1
bb.4:
...
# We would need to extend the live range of %0 to be live out of %bb.2
---
name: register_not_marked_liveout
tracksRegLiveness: true
machineFunctionInfo:
isEntryFunction: true
scratchRSrcReg: '$sgpr0_sgpr1_sgpr2_sgpr3'
stackPtrOffsetReg: '$sgpr32'
returnsVoid: true
body: |
; CHECK-LABEL: name: register_not_marked_liveout
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[S_MOV_B64_:%[0-9]+]]:sreg_64_xexec = S_MOV_B64 0
; CHECK-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[S_MOV_B64_]], implicit $exec
; CHECK-NEXT: [[V_CMP_GT_I32_e64_:%[0-9]+]]:sreg_64 = V_CMP_GT_I32_e64 0, [[V_CNDMASK_B32_e64_]], implicit $exec
; CHECK-NEXT: $exec = S_MOV_B64_term [[V_CMP_GT_I32_e64_]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $exec = S_MOV_B64_term [[V_CMP_GT_I32_e64_]]
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.3, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[S_MOV_B64_]], implicit-def dead $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.1, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
bb.0:
liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16
%0:sreg_64_xexec = S_MOV_B64 0
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%2:sreg_64 = V_CMP_GT_I32_e64 0, %1, implicit $exec
$exec = S_MOV_B64_term %2
bb.1:
$exec = S_MOV_B64_term %2
S_CBRANCH_EXECZ %bb.3, implicit $exec
bb.2:
%3:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %3, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.1, implicit killed $vcc
bb.3:
...
# Can't delete V_CNDMASK_B32 when folding into the use in %bb.3 since
# it's also used in %bb.0
---
name: cndmask_multiple_uses
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cndmask_multiple_uses
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, undef %1:sreg_64_xexec, implicit $exec
; CHECK-NEXT: [[V_CMP_NE_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_NE_U32_e64 1, [[V_CNDMASK_B32_e64_]], implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.3, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.5(0x40000000), %bb.3(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_AND_B64 $exec, [[V_CMP_NE_U32_e64_]], implicit-def dead $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.5, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.5(0x40000000), %bb.4(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, undef %1:sreg_64_xexec, implicit-def dead $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.5, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: %bb.5(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.5:
bb.0:
liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16
%0:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, undef %1:sreg_64_xexec, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %0, implicit $exec
bb.1:
S_CBRANCH_VCCNZ %bb.3, implicit undef $vcc
bb.2:
$vcc = S_AND_B64 $exec, %2, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.6, implicit killed $vcc
bb.3:
%3:sreg_64_xexec = V_CMP_NE_U32_e64 1, %0, implicit $exec
$vcc = S_AND_B64 $exec, %3, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.6, implicit killed $vcc
bb.5:
bb.6:
...
# The live segment of %1 from V_CMP_GT_I32 needs to be shrunk after the use in %bb.1 is deleted
---
name: leftover_use_of_selreg_extends_liverange
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: leftover_use_of_selreg_extends_liverange
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[DEF]], implicit $exec
; CHECK-NEXT: [[V_CMP_GT_I32_e64_:%[0-9]+]]:sreg_64 = V_CMP_GT_I32_e64 0, [[V_CNDMASK_B32_e64_]], implicit $exec
; CHECK-NEXT: $exec = S_MOV_B64_term [[V_CMP_GT_I32_e64_]]
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.2, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF]], implicit-def dead $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.3, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
bb.0:
liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16
%0:sreg_64_xexec = IMPLICIT_DEF
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%2:sreg_64 = V_CMP_GT_I32_e64 0, %1, implicit $exec
$exec = S_MOV_B64_term %2
S_CBRANCH_EXECZ %bb.2, implicit $exec
bb.1:
%3:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %3, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.3, implicit killed $vcc
bb.2:
bb.3:
...
---
name: leftover_use_of_selreg_extends_liverange_subrange
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: leftover_use_of_selreg_extends_liverange_subrange
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_64_xexec = IMPLICIT_DEF
; CHECK-NEXT: undef [[V_CNDMASK_B32_e64_:%[0-9]+]].sub1:vreg_64 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[DEF]], implicit $exec
; CHECK-NEXT: [[V_CMP_GT_I32_e64_:%[0-9]+]]:sreg_64 = V_CMP_GT_I32_e64 0, [[V_CNDMASK_B32_e64_]].sub1, implicit $exec
; CHECK-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]].sub0:vreg_64 = V_MOV_B32_e32 123, implicit $exec
; CHECK-NEXT: $exec = S_MOV_B64_term [[V_CMP_GT_I32_e64_]]
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.2, implicit $exec
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[DEF]], implicit-def dead $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.3, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit [[V_CNDMASK_B32_e64_]].sub0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
bb.0:
liveins: $vgpr0, $sgpr4_sgpr5, $sgpr6_sgpr7, $sgpr8_sgpr9, $sgpr10_sgpr11, $sgpr14, $sgpr15, $sgpr16
%0:sreg_64_xexec = IMPLICIT_DEF
undef %1.sub1:vreg_64 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%1.sub0 = V_MOV_B32_e32 123, implicit $exec
%2:sreg_64 = V_CMP_GT_I32_e64 0, %1.sub1, implicit $exec
$exec = S_MOV_B64_term %2
S_CBRANCH_EXECZ %bb.2, implicit $exec
bb.1:
%3:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1.sub1, implicit $exec
$vcc = S_AND_B64 $exec, %3, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.3, implicit killed $vcc
bb.2:
S_NOP 0, implicit %1.sub0
bb.3:
...
# This was trying to extend the liverange of %0 farther than needed,
# following %1's segment to %bb3
---
name: cannot_create_empty_or_backwards_segment
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cannot_create_empty_or_backwards_segment
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $sgpr4_sgpr5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:sreg_64_xexec = COPY $sgpr4_sgpr5
; CHECK-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[COPY]], implicit $exec
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[COPY]], implicit-def dead $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.3, implicit undef $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: S_ENDPGM 0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: S_ENDPGM 0, implicit [[V_CNDMASK_B32_e64_]]
bb.0:
liveins: $sgpr4_sgpr5
%0:sreg_64_xexec = COPY $sgpr4_sgpr5
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %2, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
bb.1:
S_CBRANCH_VCCNZ %bb.3, implicit killed undef $vcc
bb.2:
S_ENDPGM 0
bb.3:
S_ENDPGM 0, implicit %1
...
---
name: cannot_create_empty_or_backwards_segment_2
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: cannot_create_empty_or_backwards_segment_2
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x80000000)
; CHECK-NEXT: liveins: $sgpr4_sgpr5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: liveins: $sgpr4_sgpr5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:sreg_64_xexec = COPY $sgpr4_sgpr5
; CHECK-NEXT: [[V_CNDMASK_B32_e64_:%[0-9]+]]:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, [[COPY]], implicit $exec
; CHECK-NEXT: $vcc = S_ANDN2_B64 $exec, [[COPY]], implicit-def dead $scc
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $sgpr4_sgpr5
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit-def dead [[V_CNDMASK_B32_e64_]], implicit [[V_CNDMASK_B32_e64_]]
; CHECK-NEXT: S_CBRANCH_VCCNZ %bb.4, implicit undef $vcc
; CHECK-NEXT: S_BRANCH %bb.1
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: S_ENDPGM 0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: S_ENDPGM 0
bb.0:
liveins: $sgpr4_sgpr5
bb.1:
liveins: $sgpr4_sgpr5
%0:sreg_64_xexec = COPY $sgpr4_sgpr5
%1:vgpr_32 = V_CNDMASK_B32_e64 0, 0, 0, 1, %0, implicit $exec
%2:sreg_64_xexec = V_CMP_NE_U32_e64 1, %1, implicit $exec
$vcc = S_AND_B64 $exec, %2, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.2, implicit killed $vcc
bb.2:
liveins: $sgpr4_sgpr5
S_NOP 0, implicit-def %1, implicit %1
S_CBRANCH_VCCNZ %bb.4, implicit killed undef $vcc
S_BRANCH %bb.1
bb.3:
S_ENDPGM 0
bb.4:
S_ENDPGM 0
...
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