derek.holloway
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68 lines
2.7 KiB
YAML
68 lines
2.7 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--amdpal -mcpu=gfx1200 -mattr=+wavefrontsize64 -run-pass=machine-cse -verify-machineinstrs %s -o - | FileCheck %s
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# Check that V_CMP is not eliminated across the loop.
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---
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name: v_cmp_cse_across_loop
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tracksRegLiveness: true
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legalized: true
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regBankSelected: true
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selected: true
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body: |
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; CHECK-LABEL: name: v_cmp_cse_across_loop
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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, $sgpr2_sgpr3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
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; CHECK-NEXT: [[COPY1:%[0-9]+]]:sreg_32 = COPY $sgpr0
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; CHECK-NEXT: [[COPY2:%[0-9]+]]:sreg_64 = COPY $sgpr2_sgpr3
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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.1(0x40000000), %bb.2(0x40000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[V_CMP_GT_U32_e64_:%[0-9]+]]:sreg_64 = V_CMP_GT_U32_e64 [[COPY]], [[COPY1]], implicit $exec
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; CHECK-NEXT: [[SI_IF_BREAK:%[0-9]+]]:sreg_64 = SI_IF_BREAK killed [[V_CMP_GT_U32_e64_]], [[COPY2]], implicit-def dead $scc
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; CHECK-NEXT: SI_LOOP [[SI_IF_BREAK]], %bb.1, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
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; CHECK-NEXT: S_BRANCH %bb.2
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.2:
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; CHECK-NEXT: successors: %bb.3(0x80000000)
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: SI_END_CF [[SI_IF_BREAK]], implicit-def dead $exec, implicit-def dead $scc, implicit $exec
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; CHECK-NEXT: [[V_CMP_GT_U32_e64_1:%[0-9]+]]:sreg_64 = V_CMP_GT_U32_e64 [[COPY]], [[COPY1]], implicit $exec
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; CHECK-NEXT: [[S_AND_B64_:%[0-9]+]]:sreg_64 = S_AND_B64 [[V_CMP_GT_U32_e64_1]], $exec, implicit-def $scc
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; CHECK-NEXT: S_BRANCH %bb.3
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: bb.3:
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; CHECK-NEXT: S_ENDPGM 0
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bb.0:
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successors: %bb.1(0x80000000)
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liveins: $vgpr0, $sgpr0, $sgpr2_sgpr3
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%0:vgpr_32 = COPY $vgpr0
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%1:sreg_32 = COPY $sgpr0
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%2:sreg_64 = COPY $sgpr2_sgpr3
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S_BRANCH %bb.1
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bb.1:
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successors: %bb.1(0x40000000), %bb.2(0x40000000)
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%3:sreg_64 = V_CMP_GT_U32_e64 %0:vgpr_32, %1:sreg_32, implicit $exec
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%4:sreg_64 = SI_IF_BREAK killed %3:sreg_64, %2:sreg_64, implicit-def dead $scc
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SI_LOOP %4:sreg_64, %bb.1, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
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S_BRANCH %bb.2
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bb.2:
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successors: %bb.3(0x80000000)
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SI_END_CF %4:sreg_64, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
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%5:sreg_64 = V_CMP_GT_U32_e64 %0:vgpr_32, %1:sreg_32, implicit $exec
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%6:sreg_64 = S_AND_B64 %5:sreg_64, $exec, implicit-def $scc
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S_BRANCH %bb.3
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bb.3:
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S_ENDPGM 0
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...
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