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clang-p2996/llvm/test/CodeGen/AMDGPU/lower-control-flow-live-variables-update.mir
Matt Arsenault 2a9f1dad2c AMDGPU: Fix LiveVariables verifier error for values defined before SI_END_CF 
GlobalISel happens to insert some constant materializes before SI_END_CF
in one test. These need to be excluded from AliveBlocks since they
are defined in the original block and used in the split block,
so they aren't fully alive through either block.

The case where the value defined in the first block which was originally used
in a later block is still broken.

Avoids a verifier error in a future patch.
2023-04-08 07:05:35 -04:00

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -start-before=livevars -stop-after=twoaddressinstruction -verify-machineinstrs -o - %s | FileCheck %s
# FIXME: update_mir_test_checks tries to incorrectly re-use a variable
# name used for a copy, so some of the check variable names were
# manually fixed.
# Check for LiveVariables verifier error after lowering SI_END_CF
---
name: live_variables_update_block_split
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: live_variables_update_block_split
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $vgpr0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 0, killed [[COPY]], implicit $exec
; CHECK-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[V_MOV_B32_e32_]]
; CHECK-NEXT: [[COPY2:%[0-9]+]]:vgpr_32 = COPY killed [[V_MOV_B32_e32_]]
; CHECK-NEXT: [[COPY3:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY3]], [[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_]], [[COPY3]], 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 [[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.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY4:%[0-9]+]]:sreg_64_xexec = COPY killed [[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.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY5:%[0-9]+]]:vgpr_32 = COPY killed [[COPY1]]
; CHECK-NEXT: [[V_ADD_U32_e32_:%[0-9]+]]:vgpr_32 = nsw V_ADD_U32_e32 1, killed [[COPY5]], implicit $exec
; CHECK-NEXT: [[COPY6:%[0-9]+]]:vgpr_32 = COPY killed [[V_ADD_U32_e32_]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY66:%[0-9]+]]:vgpr_32 = COPY killed [[COPY6]]
; CHECK-NEXT: GLOBAL_STORE_DWORD undef %10:vreg_64, [[COPY66]], 0, 0, implicit $exec :: (volatile store (s32), addrspace 1)
; CHECK-NEXT: [[COPY7:%[0-9]+]]:vgpr_32 = COPY killed [[COPY66]]
; CHECK-NEXT: [[COPY8:%[0-9]+]]:vgpr_32 = COPY [[COPY7]]
; CHECK-NEXT: [[COPY8:%[0-9]+]]:vgpr_32 = COPY killed [[COPY7]]
; CHECK-NEXT: [[COPY8:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_1:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY8]], [[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]], [[COPY8]], implicit-def dead $scc
; CHECK-NEXT: $exec = S_MOV_B64_term killed [[S_AND_B64_1]]
; CHECK-NEXT: [[S_MOV_B64_term1:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term killed [[S_XOR_B64_1]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.2
bb.0:
successors: %bb.2(0x40000000), %bb.1(0x40000000)
liveins: $vgpr0
%0:vgpr_32 = COPY killed $vgpr0
%1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%2:sreg_64_xexec = V_CMP_EQ_U32_e64 0, killed %0, implicit $exec
%3:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
S_BRANCH %bb.2
bb.1:
successors: %bb.2(0x80000000)
%4:sreg_64_xexec = PHI %5, %bb.2, %3, %bb.0
%6:vgpr_32 = PHI %7, %bb.2, %1, %bb.0
SI_END_CF killed %4, implicit-def $exec, implicit-def dead $scc, implicit $exec
%8:vgpr_32 = nsw V_ADD_U32_e32 1, killed %6, implicit $exec
bb.2:
successors: %bb.2(0x40000000), %bb.1(0x40000000)
%9:vgpr_32 = PHI %8, %bb.1, %7, %bb.2, %1, %bb.0
GLOBAL_STORE_DWORD undef %10:vreg_64, %9, 0, 0, implicit $exec :: (volatile store (s32), addrspace 1)
%7:vgpr_32 = COPY killed %9
%5:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
S_BRANCH %bb.2
...
# Here %4 which is not a phi join reg has its last use in bb.2. When
# bb.2 is split into MBB/SplitBB, %4 will be live through MBB.
---
name: live_variables_update_block_split_non_phi_live_across
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: live_variables_update_block_split_non_phi_live_across
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: liveins: $vgpr0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 0, killed [[COPY]], implicit $exec
; CHECK-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[V_MOV_B32_e32_]]
; CHECK-NEXT: [[COPY2:%[0-9]+]]:vgpr_32 = COPY killed [[V_MOV_B32_e32_]]
; CHECK-NEXT: [[COPY3:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY3]], [[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_]], [[COPY3]], 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 [[S_XOR_B64_]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.1:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY4:%[0-9]+]]:vgpr_32 = COPY killed [[COPY1]]
; CHECK-NEXT: [[COPY5:%[0-9]+]]:sreg_64_xexec = COPY killed [[S_MOV_B64_term]]
; CHECK-NEXT: S_BRANCH %bb.2
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.4(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY6:%[0-9]+]]:sreg_64_xexec = COPY killed [[COPY5]]
; CHECK-NEXT: $exec = S_OR_B64_term $exec, killed [[COPY6]], implicit-def $scc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.4:
; CHECK-NEXT: successors: %bb.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[V_ADD_U32_e32_:%[0-9]+]]:vgpr_32 = nsw V_ADD_U32_e32 1, killed [[COPY4]], implicit $exec
; CHECK-NEXT: [[COPY7:%[0-9]+]]:vgpr_32 = COPY killed [[V_ADD_U32_e32_]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.3(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY77:%[0-9]+]]:vgpr_32 = COPY killed [[COPY7]]
; CHECK-NEXT: GLOBAL_STORE_DWORD undef %11:vreg_64, [[COPY77]], 0, 0, implicit $exec :: (volatile store (s32), addrspace 1)
; CHECK-NEXT: [[COPY8:%[0-9]+]]:vgpr_32 = COPY killed [[COPY77]]
; CHECK-NEXT: [[COPY9:%[0-9]+]]:vgpr_32 = COPY [[COPY8]]
; CHECK-NEXT: [[COPY9:%[0-9]+]]:vgpr_32 = COPY killed [[COPY8]]
; CHECK-NEXT: [[COPY9:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_1:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY9]], [[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]], [[COPY9]], implicit-def dead $scc
; CHECK-NEXT: $exec = S_MOV_B64_term killed [[S_AND_B64_1]]
; CHECK-NEXT: [[S_MOV_B64_term1:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term killed [[S_XOR_B64_1]], implicit $exec
; CHECK-NEXT: S_CBRANCH_EXECZ %bb.1, implicit $exec
; CHECK-NEXT: S_BRANCH %bb.3
bb.0:
successors: %bb.3(0x40000000), %bb.1(0x40000000)
liveins: $vgpr0
%0:vgpr_32 = COPY killed $vgpr0
%1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%2:sreg_64_xexec = V_CMP_EQ_U32_e64 0, killed %0, implicit $exec
%3:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
S_BRANCH %bb.3
bb.1:
successors: %bb.2(0x80000000)
%4:sreg_64_xexec = PHI %5, %bb.3, %3, %bb.0
%6:vgpr_32 = PHI %7, %bb.3, %1, %bb.0
S_BRANCH %bb.2
bb.2:
successors: %bb.3(0x80000000)
%8:sreg_64_xexec = COPY %4
SI_END_CF killed %8, implicit-def $exec, implicit-def dead $scc, implicit $exec
%9:vgpr_32 = nsw V_ADD_U32_e32 1, killed %6, implicit $exec
bb.3:
successors: %bb.3(0x40000000), %bb.1(0x40000000)
%10:vgpr_32 = PHI %9, %bb.2, %7, %bb.3, %1, %bb.0
GLOBAL_STORE_DWORD undef %11:vreg_64, %10, 0, 0, implicit $exec :: (volatile store (s32), addrspace 1)
%7:vgpr_32 = COPY killed %10
%5:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
S_BRANCH %bb.3
...
# Check we don't get "Block should not be in AliveBlocks" for
# registers defined before si_end_cf
---
name: live_variables_update_block_split_split_killed_def_before_si_end_cf
tracksRegLiveness: true
body: |
; CHECK-LABEL: name: live_variables_update_block_split_split_killed_def_before_si_end_cf
; CHECK: bb.0:
; CHECK-NEXT: successors: %bb.1(0x40000000), %bb.2(0x40000000)
; CHECK-NEXT: liveins: $vgpr0
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 0, killed [[COPY]], implicit $exec
; CHECK-NEXT: [[COPY1:%[0-9]+]]:vgpr_32 = COPY [[V_MOV_B32_e32_]]
; CHECK-NEXT: [[COPY2:%[0-9]+]]:vgpr_32 = COPY killed [[V_MOV_B32_e32_]]
; CHECK-NEXT: [[COPY3:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY3]], [[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_]], [[COPY3]], 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 [[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.3(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY4:%[0-9]+]]:sreg_64_xexec = COPY killed [[S_MOV_B64_term]]
; CHECK-NEXT: [[S_MOV_B64_:%[0-9]+]]:sreg_64 = S_MOV_B64 1
; CHECK-NEXT: $exec = S_OR_B64_term $exec, killed [[COPY4]], implicit-def $scc
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.3:
; CHECK-NEXT: successors: %bb.2(0x80000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: S_NOP 0, implicit killed [[S_MOV_B64_]]
; CHECK-NEXT: [[COPY5:%[0-9]+]]:vgpr_32 = COPY killed [[COPY1]]
; CHECK-NEXT: [[V_ADD_U32_e32_:%[0-9]+]]:vgpr_32 = nsw V_ADD_U32_e32 1, killed [[COPY5]], implicit $exec
; CHECK-NEXT: [[COPY6:%[0-9]+]]:vgpr_32 = COPY killed [[V_ADD_U32_e32_]]
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: bb.2:
; CHECK-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY66:%[0-9]+]]:vgpr_32 = COPY killed [[COPY6]]
; CHECK-NEXT: GLOBAL_STORE_DWORD undef %11:vreg_64, [[COPY66]], 0, 0, implicit $exec :: (volatile store (s32), addrspace 1)
; CHECK-NEXT: [[COPY7:%[0-9]+]]:vgpr_32 = COPY killed [[COPY66]]
; CHECK-NEXT: [[COPY8:%[0-9]+]]:vgpr_32 = COPY [[COPY7]]
; CHECK-NEXT: [[COPY8:%[0-9]+]]:vgpr_32 = COPY killed [[COPY7]]
; CHECK-NEXT: [[COPY8:%[0-9]+]]:sreg_64 = COPY $exec, implicit-def $exec
; CHECK-NEXT: [[S_AND_B64_1:%[0-9]+]]:sreg_64 = S_AND_B64 [[COPY8]], [[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]], [[COPY8]], implicit-def dead $scc
; CHECK-NEXT: $exec = S_MOV_B64_term killed [[S_AND_B64_1]]
; CHECK-NEXT: [[S_MOV_B64_term1:%[0-9]+]]:sreg_64_xexec = S_MOV_B64_term killed [[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
%0:vgpr_32 = COPY killed $vgpr0
%1:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
%2:sreg_64_xexec = V_CMP_EQ_U32_e64 0, killed %0, implicit $exec
%3:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
S_BRANCH %bb.2
bb.1:
%4:sreg_64_xexec = PHI %5, %bb.2, %3, %bb.0
%6:vgpr_32 = PHI %7, %bb.2, %1, %bb.0
%8:sreg_64 = S_MOV_B64 1
SI_END_CF killed %4, implicit-def $exec, implicit-def dead $scc, implicit $exec
S_NOP 0, implicit killed %8
%9:vgpr_32 = nsw V_ADD_U32_e32 1, killed %6, implicit $exec
bb.2:
successors: %bb.2(0x40000000), %bb.1(0x40000000)
%10:vgpr_32 = PHI %9, %bb.1, %7, %bb.2, %1, %bb.0
GLOBAL_STORE_DWORD undef %11:vreg_64, %10, 0, 0, implicit $exec :: (volatile store (s32), addrspace 1)
%7:vgpr_32 = COPY killed %10
%5:sreg_64_xexec = SI_IF %2, %bb.1, implicit-def $exec, implicit-def dead $scc, implicit $exec
S_BRANCH %bb.2
...
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