test/CodeGen/ARM/GlobalISel/arm-legalize-exts.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_zext_s16() { ret void }
  define void @test_sext_s8() { ret void }
  define void @test_anyext_s1() { ret void }
...
---
name:            test_zext_s16
# CHECK-LABEL: name: test_zext_s16
legalized:       false
# CHECK: legalized: true
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
body:             |
  bb.0:
    liveins: $r0

    %0(p0) = COPY $r0
    %1(s16) = G_LOAD %0 :: (load 2)
    %2(s32) = G_ZEXT %1
    ; G_ZEXT with s16 is legal, so we should find it unchanged in the output
    ; CHECK: {{%[0-9]+}}:_(s32) = G_ZEXT {{%[0-9]+}}
    $r0 = COPY %2(s32)
    BX_RET 14, $noreg, implicit $r0
...
---
name:            test_sext_s8
# CHECK-LABEL: name: test_sext_s8
legalized:       false
# CHECK: legalized: true
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
body:             |
  bb.0:
    liveins: $r0

    %0(p0) = COPY $r0
    %1(s8) = G_LOAD %0(p0) :: (load 1)
    %2(s32) = G_SEXT %1
    ; G_SEXT with s8 is legal, so we should find it unchanged in the output
    ; CHECK: {{%[0-9]+}}:_(s32) = G_SEXT {{%[0-9]+}}
    $r0 = COPY %2(s32)
    BX_RET 14, $noreg, implicit $r0
...
---
name:            test_anyext_s1
# CHECK-LABEL: name: test_anyext_s1
legalized:       false
# CHECK: legalized: true
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
body:             |
  bb.0:
    liveins: $r0

    %0(p0) = COPY $r0
    %1(s1) = G_LOAD %0(p0) :: (load 1)
    %2(s32) = G_ANYEXT %1
    ; G_ANYEXT with s1 is legal, so we should find it unchanged in the output
    ; CHECK: {{%[0-9]+}}:_(s32) = G_ANYEXT {{%[0-9]+}}
    $r0 = COPY %2(s32)
    BX_RET 14, $noreg, implicit $r0
...