third_party/llvm-7.0/llvm/test/CodeGen/Hexagon/early-if-debug.mir

# RUN: llc -march=hexagon -eif-limit=4 -run-pass hexagon-early-if -o - %s | FileCheck %s
# Check that even with the limit of 4 instructions, the block bb.1 is
# if-converted.

# CHECK-LABEL: bb.0:
# CHECK: %0:intregs = COPY $r0
# CHECK: %1:predregs = C2_cmpeqi %0, 0
# CHECK: %2:intregs = A2_tfrsi 123
# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
# CHECK: DBG_VALUE debug-use %0, debug-use $noreg
# CHECK: %3:intregs = A2_tfrsi 321
# CHECK: %5:intregs = C2_mux %1, %2, %3

--- |
  define void @foo() {
    ret void
  }
  !1 = !DIExpression()
...
---
name: foo
tracksRegLiveness: true
registers:
  - { id: 0, class: intregs }
  - { id: 1, class: predregs }
  - { id: 2, class: intregs }
  - { id: 3, class: intregs }
  - { id: 4, class: intregs }
body:             |
  bb.0:
    liveins: $r0

    %0 = COPY $r0
    %1 = C2_cmpeqi %0, 0
    %2 = A2_tfrsi 123
    J2_jumpt %1, %bb.2, implicit-def dead $pc
    J2_jump %bb.1, implicit-def dead $pc

  bb.1:
    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
    DBG_VALUE debug-use %0, debug-use $noreg, !1, !1
    %3 = A2_tfrsi 321

  bb.2:
    %4 = PHI %2, %bb.0, %3, %bb.1

...