llvm/test/CodeGen/Hexagon/hexagon-copy-hoisting.mir

# RUN: llc -mtriple=hexagon -run-pass hexagon-move-phicopy -o - %s | FileCheck %s

# CHECK-COUNT-1: %4:intregs = COPY %1

# CHECK: bb.1
# CHECK-NOT: %4:intregs = COPY %1

# CHECK: bb.2
# CHECK-NOT: %4:intregs = COPY %1
# CHECK: %5:intregs = COPY %0

---
name:            f0
tracksRegLiveness: false
registers:
  - { id: 0, class: intregs, preferred-register: '' }
  - { id: 1, class: intregs, preferred-register: '' }
  - { id: 2, class: predregs, preferred-register: '' }
  - { id: 3, class: predregs, preferred-register: '' }
  - { id: 4, class: intregs, preferred-register: '' }
  - { id: 5, class: intregs, preferred-register: '' }
stack:
  - { id: 0, offset: 0, size: 4, alignment: 8 }
body: |
  bb.0:
    successors: %bb.1, %bb.2

    %1:intregs = COPY $r1
    %0:intregs = COPY $r0
    %2:predregs = C2_cmpgt %0, %1
    %3:predregs = C2_not %2
    J2_jumpt %3, %bb.2, implicit-def dead $pc
    J2_jump %bb.1, implicit-def dead $pc

  bb.1:
    successors: %bb.0

    %4:intregs = COPY %1
    $r1 = COPY %4
    J2_jump %bb.0, implicit-def dead $pc

  bb.2:
    successors: %bb.0

    %4:intregs = COPY %1
    %5:intregs = COPY %0
    $r1 = COPY %4
    J2_jump %bb.0, implicit-def dead $pc
...