llvm/test/CodeGen/ARM/tst-peephole.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -run-pass=peephole-opt %s -o - -verify-machineinstrs | FileCheck %s

# The and -> ands transform is sensitive to scheduling; make sure we don't
# transform cases which aren't legal.

--- |
  target triple = "armv7-unknown-unknown"
  define i32 @foo_transform(i32 %in) {
    ret i32 undef
  }
  define i32 @foo_notransform(i32 %in) {
    ret i32 undef
  }

...
---
name:            foo_transform
tracksRegLiveness: true
body:             |
  bb.0 (%ir-block.0):
    liveins: $r0

    ; CHECK-LABEL: name: foo_transform
    ; CHECK: liveins: $r0
    ; CHECK: [[COPY:%[0-9]+]]:gpr = COPY $r0
    ; CHECK: [[MOVi:%[0-9]+]]:gpr = MOVi 4, 14 /* CC::al */, $noreg, $noreg
    ; CHECK: [[ANDri:%[0-9]+]]:gpr = ANDri [[COPY]], 1, 14 /* CC::al */, $noreg, def $cpsr
    ; CHECK: [[MOVCCi16_:%[0-9]+]]:gpr = MOVCCi16 [[MOVi]], 5, 0 /* CC::eq */, $cpsr
    ; CHECK: $r0 = COPY killed [[MOVCCi16_]]
    ; CHECK: $r1 = COPY killed [[ANDri]]
    ; CHECK: BX_RET 14 /* CC::al */, $noreg, implicit $r0, implicit $r1
    %1:gpr = COPY $r0
    %2:gpr = MOVi 4, 14, $noreg, $noreg
    %4:gpr = ANDri %1:gpr, 1, 14, $noreg, $noreg
    TSTri %1:gpr, 1, 14, $noreg, implicit-def $cpsr
    %3:gpr = MOVCCi16 %2, 5, 0, $cpsr
    $r0 = COPY killed %3
    $r1 = COPY killed %4
    BX_RET 14, $noreg, implicit $r0, implicit $r1
...
name:            foo_notransform
tracksRegLiveness: true
body:             |
  bb.0 (%ir-block.0):
    liveins: $r0

    %1:gpr = COPY $r0
    %2:gpr = MOVi 4, 14, $noreg, $noreg
    TSTri %1:gpr, 1, 14, $noreg, implicit-def $cpsr
    %3:gpr = MOVCCi16 %2, 5, 0, $cpsr
    %4:gpr = ANDri %1:gpr, 1, 14, $noreg, $noreg
    $r0 = COPY killed %3
    $r1 = COPY killed %4
    BX_RET 14, $noreg, implicit $r0, implicit $r1