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

# RUN: llc -O0 -mtriple thumb-- -mattr=+v6t2 -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s
--- |
  define void @test_select_s32() { ret void }
  define void @test_select_ptr() { ret void }
...
---
name:            test_select_s32
# CHECK-LABEL: name: test_select_s32
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
  - { id: 3, class: gprb }
body:             |
  bb.0:
    liveins: $r0, $r1

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

    %1(s32) = COPY $r1
    ; CHECK: [[VREGY:%[0-9]+]]:rgpr = COPY $r1

    %2(s1) = G_TRUNC %1(s32)
    ; CHECK: [[VREGC:%[0-9]+]]:gprnopc = COPY [[VREGY]]

    %3(s32) = G_SELECT %2(s1),  %0, %1
    ; CHECK: t2TSTri [[VREGC]], 1, 14, $noreg, implicit-def $cpsr
    ; CHECK: [[RES:%[0-9]+]]:rgpr = t2MOVCCr [[VREGX]], [[VREGY]], 0, $cpsr

    $r0 = COPY %3(s32)
    ; CHECK: $r0 = COPY [[RES]]

    BX_RET 14, $noreg, implicit $r0
    ; CHECK: BX_RET 14, $noreg, implicit $r0
...
---
name:            test_select_ptr
# CHECK-LABEL: name: test_select_ptr
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: gprb }
  - { id: 2, class: gprb }
  - { id: 3, class: gprb }
  - { id: 4, class: gprb }
body:             |
  bb.0:
    liveins: $r0, $r1, $r2

    %0(p0) = COPY $r0
    ; CHECK: [[VREGX:%[0-9]+]]:rgpr = COPY $r0

    %1(p0) = COPY $r1
    ; CHECK: [[VREGY:%[0-9]+]]:rgpr = COPY $r1

    %2(s32) = COPY $r2
    ; CHECK: [[VREGC32:%[0-9]+]]:gpr = COPY $r2

    %3(s1) = G_TRUNC %2(s32)
    ; CHECK: [[VREGC:%[0-9]+]]:gprnopc = COPY [[VREGC32]]

    %4(p0) = G_SELECT %3(s1),  %0, %1
    ; CHECK: t2TSTri [[VREGC]], 1, 14, $noreg, implicit-def $cpsr
    ; CHECK: [[RES:%[0-9]+]]:rgpr = t2MOVCCr [[VREGX]], [[VREGY]], 0, $cpsr

    $r0 = COPY %4(p0)
    ; CHECK: $r0 = COPY [[RES]]

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