llvm/test/CodeGen/ARM/GlobalISel/arm-legalize-consts.mir

# RUN: llc -mtriple arm-- -run-pass=legalizer %s -o - | FileCheck %s
# RUN: llc -mtriple thumb-- -mattr=+v6t2 -run-pass=legalizer %s -o - | FileCheck %s
--- |
  define void @test_constants() { ret void }
...
---
name:            test_constants
# CHECK-LABEL: name: test_constants
legalized:       false
# CHECK: legalized: true
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
  - { id: 3, class: _ }
  - { id: 4, class: _ }
  - { id: 5, class: _ }
body:             |
  bb.0:
    liveins: $r0

    %4(p0) = COPY $r0

    %0(s32) = G_CONSTANT i32 42
    ; CHECK: {{%[0-9]+}}:_(s32) = G_CONSTANT i32 42

    %1(s16) = G_CONSTANT i16 21
    G_STORE %1(s16), %4(p0) :: (store (s16))
    ; CHECK-NOT: G_CONSTANT i16
    ; CHECK: [[EXT:%[0-9]+]]:_(s32) = G_CONSTANT i32 21
    ; CHECK: {{%[0-9]+}}:_(s16) = G_TRUNC [[EXT]](s32)
    ; CHECK-NOT: G_CONSTANT i16

    %2(s8) = G_CONSTANT i8 10
    G_STORE %2(s8), %4(p0) :: (store (s8))
    ; CHECK-NOT: G_CONSTANT i8
    ; CHECK: [[EXT:%[0-9]+]]:_(s32) = G_CONSTANT i32 10
    ; CHECK: {{%[0-9]+}}:_(s8) = G_TRUNC [[EXT]](s32)
    ; CHECK-NOT: G_CONSTANT i8

    %3:_(s1) = G_CONSTANT i1 1
    %6:_(s32) = G_CONSTANT i32 99
    %7:_(s32) = G_SELECT %3, %0, %6
    G_STORE %7(s32), %4(p0) :: (store (s32))
    ; CHECK-NOT: G_CONSTANT i1
    ; CHECK: [[EXT:%[0-9]+]]:_(s32) = G_CONSTANT i32 1
    ; CHECK: {{%[0-9]+}}:_(s1) = G_TRUNC [[EXT]](s32)
    ; CHECK-NOT: G_CONSTANT i1

    %5(p0) = G_CONSTANT i32 0

    G_STORE %5(p0), %4(p0) :: (store (p0))
    ; CHECK: {{%[0-9]+}}:_(p0) = G_CONSTANT i32 0

    $r0 = COPY %0(s32)
    BX_RET 14, $noreg, implicit $r0
...