derek.holloway
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86 lines
3.4 KiB
YAML
86 lines
3.4 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 6
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# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -run-pass=machine-loops,livevars,phi-node-elimination -no-phi-elim-live-out-early-exit -o - %s | FileCheck %s
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# Test that PHIElimination accesses MachineLoopInfo if available for
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# loop-aware edge splitting. The -no-phi-elim-live-out-early-exit flag
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# ensures we reach the loop exiting edge optimization code path.
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---
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name: test_loop_exit_edge_split
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tracksRegLiveness: true
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body: |
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; CHECK-LABEL: name: test_loop_exit_edge_split
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; CHECK: bb.0:
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; CHECK-NEXT: successors: %bb.1(0x80000000)
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; CHECK-NEXT: liveins: $vgpr0, $sgpr0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY killed $vgpr0
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; CHECK-NEXT: [[COPY1:%[0-9]+]]:sgpr_32 = COPY killed $sgpr0
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; CHECK-NEXT: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
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; CHECK-NEXT: [[COPY2:%[0-9]+]]:vgpr_32 = COPY killed [[V_MOV_B32_e32_]]
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; CHECK-NEXT: S_BRANCH %bb.1
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.1:
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; CHECK-NEXT: successors: %bb.4(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY3:%[0-9]+]]:vgpr_32 = COPY killed [[COPY2]]
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; CHECK-NEXT: [[V_CMP_LT_I32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_LT_I32_e64 [[COPY3]], [[COPY1]], implicit $exec
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; CHECK-NEXT: $vcc = COPY killed [[V_CMP_LT_I32_e64_]]
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; CHECK-NEXT: S_CBRANCH_VCCZ %bb.2, implicit killed $vcc
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.4:
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; CHECK-NEXT: successors: %bb.3(0x80000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY4:%[0-9]+]]:vgpr_32 = COPY killed [[COPY3]]
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; CHECK-NEXT: S_BRANCH %bb.3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: successors: %bb.5(0x40000000), %bb.1(0x40000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[V_ADD_U32_e64_:%[0-9]+]]:vgpr_32 = V_ADD_U32_e64 killed [[COPY3]], [[COPY]], 0, implicit $exec
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; CHECK-NEXT: [[V_CMP_EQ_U32_e64_:%[0-9]+]]:sreg_64_xexec = V_CMP_EQ_U32_e64 [[V_ADD_U32_e64_]], [[COPY1]], implicit $exec
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; CHECK-NEXT: $vcc = COPY killed [[V_CMP_EQ_U32_e64_]]
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; CHECK-NEXT: [[COPY2:%[0-9]+]]:vgpr_32 = COPY [[V_ADD_U32_e64_]]
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; CHECK-NEXT: S_CBRANCH_VCCZ %bb.1, implicit killed $vcc
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.5:
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; CHECK-NEXT: successors: %bb.3(0x80000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY4:%[0-9]+]]:vgpr_32 = COPY killed [[V_ADD_U32_e64_]]
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.3:
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; CHECK-NEXT: [[COPY5:%[0-9]+]]:vgpr_32 = COPY killed [[COPY4]]
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; CHECK-NEXT: $vgpr0 = COPY killed [[COPY5]]
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; CHECK-NEXT: SI_RETURN implicit killed $vgpr0
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bb.0:
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liveins: $vgpr0, $sgpr0
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%0:vgpr_32 = COPY $vgpr0
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%1:sgpr_32 = COPY $sgpr0
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%2:vgpr_32 = V_MOV_B32_e32 0, implicit $exec
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S_BRANCH %bb.1
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bb.1:
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; Loop header with PHI (multiple predecessors: bb.0, bb.2)
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%3:vgpr_32 = PHI %2, %bb.0, %4, %bb.2
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%10:sreg_64_xexec = V_CMP_LT_I32_e64 %3, %1, implicit $exec
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$vcc = COPY %10
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S_CBRANCH_VCCNZ %bb.3, implicit $vcc
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S_BRANCH %bb.2
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bb.2:
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; Loop body with two successors
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%4:vgpr_32 = V_ADD_U32_e64 %3, %0, 0, implicit $exec
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%11:sreg_64_xexec = V_CMP_EQ_U32_e64 %4, %1, implicit $exec
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$vcc = COPY %11
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S_CBRANCH_VCCNZ %bb.3, implicit $vcc
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S_BRANCH %bb.1
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bb.3:
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; Exit - PHI with values from both bb.1 and bb.2
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%5:vgpr_32 = PHI %3, %bb.1, %4, %bb.2
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$vgpr0 = COPY %5
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SI_RETURN implicit $vgpr0
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...
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