File: si-lower-i1-copies.mir

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# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -run-pass=si-i1-copies -o - %s | FileCheck -check-prefixes=GCN %s

# GCN-LABEL: name: lcssa_phi
---
name:              lcssa_phi
tracksRegLiveness: true
body:             |
  bb.0:
    %0:sreg_64 = S_MOV_B64 0
    %8:vreg_1 = IMPLICIT_DEF
    %10:sreg_64 = IMPLICIT_DEF
    %11:sreg_64 = SI_IF %10, %bb.3, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
    S_BRANCH %bb.1

  bb.1:
    %1:sreg_64 = PHI %0, %bb.0, %3, %bb.1
    %2:sreg_64 = IMPLICIT_DEF
    %3:sreg_64 = SI_IF_BREAK %2, %1, implicit-def dead $scc
    %4:sreg_64 = IMPLICIT_DEF
    %5:vreg_1 = COPY %4
    SI_LOOP %3, %bb.1, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
    S_BRANCH %bb.2

  bb.2:
    %6:vreg_1 = PHI %5, %bb.1
    SI_END_CF %3, implicit-def dead $exec, implicit-def dead $scc, implicit $exec

  bb.3:
    %7:vreg_1 = PHI %6, %bb.2, %8, %bb.0
    SI_END_CF %11, implicit-def dead $exec, implicit-def dead $scc, implicit $exec
    S_ENDPGM 0

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