test/CodeGen/ARM/GlobalISel/thumb-select-exts.mir

# RUN: llc -O0 -mtriple thumb-- -mattr=+v6t2 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
--- |
  define void @test_trunc_and_zext_s1() { ret void }
  define void @test_trunc_and_sext_s1() { ret void }
  define void @test_trunc_and_anyext_s1() { ret void }

  define void @test_trunc_and_zext_s8() { ret void }
  define void @test_trunc_and_sext_s8() { ret void }
  define void @test_trunc_and_anyext_s8() { ret void }

  define void @test_trunc_and_zext_s16() { ret void }
  define void @test_trunc_and_sext_s16() { ret void }
  define void @test_trunc_and_anyext_s16() { ret void }
...
---
name:            test_trunc_and_zext_s1
# CHECK-LABEL: name: test_trunc_and_zext_s1
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s1) = G_TRUNC %0(s32)

    %2(s32) = G_ZEXT %1(s1)
    ; CHECK: [[RVREG:%[0-9]+]]:rgpr = COPY [[VREG]]
    ; CHECK: [[VREGEXT:%[0-9]+]]:rgpr = t2ANDri [[RVREG]], 1, 14, $noreg, $noreg

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREGEXT]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_trunc_and_sext_s1
# CHECK-LABEL: name: test_trunc_and_sext_s1
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s1) = G_TRUNC %0(s32)

    %2(s32) = G_SEXT %1(s1)
    ; CHECK: [[RVREG:%[0-9]+]]:rgpr = COPY [[VREG]]
    ; CHECK: [[VREGAND:%[0-9]+]]:rgpr = t2ANDri [[RVREG]], 1, 14, $noreg, $noreg
    ; CHECK: [[VREGEXT:%[0-9]+]]:rgpr = t2RSBri [[VREGAND]], 0, 14, $noreg, $noreg

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREGEXT]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_trunc_and_anyext_s1
# CHECK-LABEL: name: test_trunc_and_anyext_s1
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s1) = G_TRUNC %0(s32)

    %2(s32) = G_ANYEXT %1(s1)

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREG]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_trunc_and_zext_s8
# CHECK-LABEL: name: test_trunc_and_zext_s8
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s8) = G_TRUNC %0(s32)
    ; CHECK: [[VREGTRUNC:%[0-9]+]]:rgpr = COPY [[VREG]]

    %2(s32) = G_ZEXT %1(s8)
    ; CHECK: [[VREGEXT:%[0-9]+]]:rgpr = t2UXTB [[VREGTRUNC]], 0, 14, $noreg

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREGEXT]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_trunc_and_sext_s8
# CHECK-LABEL: name: test_trunc_and_sext_s8
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s8) = G_TRUNC %0(s32)
    ; CHECK: [[VREGTRUNC:%[0-9]+]]:rgpr = COPY [[VREG]]

    %2(s32) = G_SEXT %1(s8)
    ; CHECK: [[VREGEXT:%[0-9]+]]:rgpr = t2SXTB [[VREGTRUNC]], 0, 14, $noreg

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREGEXT]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_trunc_and_anyext_s8
# CHECK-LABEL: name: test_trunc_and_anyext_s8
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s8) = G_TRUNC %0(s32)

    %2(s32) = G_ANYEXT %1(s8)

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREG]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_trunc_and_zext_s16
# CHECK-LABEL: name: test_trunc_and_zext_s16
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s16) = G_TRUNC %0(s32)
    ; CHECK: [[VREGTRUNC:%[0-9]+]]:rgpr = COPY [[VREG]]

    %2(s32) = G_ZEXT %1(s16)
    ; CHECK: [[VREGEXT:%[0-9]+]]:rgpr = t2UXTH [[VREGTRUNC]], 0, 14, $noreg

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREGEXT]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_trunc_and_sext_s16
# CHECK-LABEL: name: test_trunc_and_sext_s16
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s16) = G_TRUNC %0(s32)
    ; CHECK: [[VREGTRUNC:%[0-9]+]]:rgpr = COPY [[VREG]]

    %2(s32) = G_SEXT %1(s16)
    ; CHECK: [[VREGEXT:%[0-9]+]]:rgpr = t2SXTH [[VREGTRUNC]], 0, 14, $noreg

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREGEXT]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_trunc_and_anyext_s16
# CHECK-LABEL: name: test_trunc_and_anyext_s16
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
tracksRegLiveness: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
body:             |
  bb.0:
    liveins: $r0

    %0(s32) = COPY $r0
    ; CHECK: [[VREG:%[0-9]+]]:gpr = COPY $r0

    %1(s16) = G_TRUNC %0(s32)

    %2(s32) = G_ANYEXT %1(s16)

    $r0 = COPY %2(s32)
    ; CHECK: $r0 = COPY [[VREG]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...