45 lines
2 KiB
Text
45 lines
2 KiB
Text
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 4
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# RUN: llc -mtriple=amdgcn -mcpu=tonga -run-pass=si-fix-sgpr-copies --verify-machineinstrs -o - %s | FileCheck %s
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# Copy to $sgpr0 is disconnected and becomes an IMPLICIT_DEF
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# Inserted V_AND_B32 defines virtual register after use.
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---
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name: si_fix_sgpr_copies_breaks_function
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tracksRegLiveness: true
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machineFunctionInfo:
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isEntryFunction: true
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body: |
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bb.0:
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liveins: $sgpr0
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; CHECK-LABEL: name: si_fix_sgpr_copies_breaks_function
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; CHECK: liveins: $sgpr0
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; CHECK-NEXT: {{ $}}
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; CHECK-NEXT: [[COPY:%[0-9]+]]:sgpr_32 = COPY $sgpr0
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; CHECK-NEXT: [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 16
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; CHECK-NEXT: [[S_LSHR_B32_:%[0-9]+]]:sreg_32 = S_LSHR_B32 [[COPY]], killed [[S_MOV_B32_]], implicit-def dead $scc
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; CHECK-NEXT: [[COPY1:%[0-9]+]]:sreg_32 = COPY killed [[S_LSHR_B32_]]
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; CHECK-NEXT: [[S_MOV_B32_1:%[0-9]+]]:sreg_32 = S_MOV_B32 -32768
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; CHECK-NEXT: [[COPY2:%[0-9]+]]:vgpr_32 = COPY killed [[S_MOV_B32_1]]
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; CHECK-NEXT: [[V_XOR_B32_e64_:%[0-9]+]]:vgpr_32 = V_XOR_B32_e64 killed [[COPY1]], [[COPY2]], implicit $exec
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; CHECK-NEXT: [[S_MOV_B32_2:%[0-9]+]]:sreg_32 = S_MOV_B32 65535
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; CHECK-NEXT: [[DEF:%[0-9]+]]:sreg_32 = IMPLICIT_DEF
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; CHECK-NEXT: [[V_AND_B32_e64_:%[0-9]+]]:vgpr_32 = V_AND_B32_e64 killed [[S_MOV_B32_2]], [[V_XOR_B32_e64_]], implicit $exec
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; CHECK-NEXT: $sgpr0 = V_READFIRSTLANE_B32 [[V_AND_B32_e64_]], implicit $exec
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; CHECK-NEXT: SI_RETURN_TO_EPILOG $sgpr0
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%0:sgpr_32 = COPY $sgpr0
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%2:sreg_32 = S_MOV_B32 16
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%3:sreg_32 = S_LSHR_B32 %0, killed %2, implicit-def dead $scc
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%4:sreg_32 = COPY killed %3
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%5:sreg_32 = S_MOV_B32 -32768
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%7:vgpr_32 = COPY killed %5
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%6:vgpr_32 = V_XOR_B32_e64 killed %4, %7, implicit $exec
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%8:sreg_32 = S_MOV_B32 65535
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%10:sreg_32 = COPY %6
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%9:sreg_32 = S_AND_B32 killed %8, killed %10, implicit-def dead $scc
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$sgpr0 = COPY %9
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SI_RETURN_TO_EPILOG $sgpr0
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...
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