llvm/test/CodeGen/ARM/GlobalISel/select-fp-const.mir

# RUN: llc -O0 -mtriple arm-- -mattr=+vfp3,-neonfp -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,VFP3
# RUN: llc -O0 -mtriple thumb-- -mattr=+v6t2,+vfp3,-neonfp -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,VFP3
# RUN: llc -O0 -mtriple arm-- -mattr=+vfp2,-neonfp -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,VFP2
# RUN: llc -O0 -mtriple thumb-- -mattr=+v6t2,+vfp2,-neonfp -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefixes=CHECK,VFP2
--- |
  define void @test_fpconst_zero_s32() { ret void }
  define void @test_fpconst_zero_s64() { ret void }

  define void @test_fpconst_8bit_s32() { ret void }
  define void @test_fpconst_8bit_s64() { ret void }
...
---
name:            test_fpconst_zero_s32
# CHECK-LABEL: name: test_fpconst_zero_s32
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: fprb }
# CHECK: constants:
# CHECK-NEXT: id: 0
# CHECK-NEXT: value: 'float 0.000000e+00'
# CHECK-NEXT: alignment: 4
# CHECK-NEXT: isTargetSpecific: false
body:             |
  bb.0:
    liveins: $r0

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

    %1(s32) = G_FCONSTANT float 0.0
    ; CHECK: [[VREG:%[0-9]+]]:spr = VLDRS %const.0, 0, 14 /* CC::al */, $noreg :: (load (s32) from constant-pool)

    G_STORE %1(s32), %0 :: (store (s32))
    ; CHECK: VSTRS [[VREG]], [[PTR]], 0, 14 /* CC::al */, $noreg

    BX_RET 14, $noreg
    ; CHECK: BX_RET 14 /* CC::al */, $noreg
...
---
name:            test_fpconst_zero_s64
# CHECK-LABEL: name: test_fpconst_zero_s64
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: fprb }
# CHECK: constants:
# CHECK-NEXT: id: 0
# CHECK-NEXT: value: 'double 0.000000e+00'
# CHECK-NEXT: alignment: 8
# CHECK-NEXT: isTargetSpecific: false
body:             |
  bb.0:
    liveins: $r0

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

    %1(s64) = G_FCONSTANT double 0.0
    ; CHECK: [[VREG:%[0-9]+]]:dpr = VLDRD %const.0, 0, 14 /* CC::al */, $noreg :: (load (s64) from constant-pool)

    G_STORE %1(s64), %0 :: (store (s64))
    ; CHECK: VSTRD [[VREG]], [[PTR]], 0, 14 /* CC::al */, $noreg

    BX_RET 14, $noreg
    ; CHECK: BX_RET 14 /* CC::al */, $noreg
...
---
name:            test_fpconst_8bit_s32
# CHECK-LABEL: name: test_fpconst_8bit_s32
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: fprb }
# VFP3: constants: []
# VFP2: constants:
# VFP2-NEXT: id: 0
# VFP2-NEXT: value: 'float -2.000000e+00'
# VFP2-NEXT: alignment: 4
# VFP2-NEXT: isTargetSpecific: false
body:             |
  bb.0:
    liveins: $r0

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

    %1(s32) = G_FCONSTANT float -2.0
    ; VFP3: [[VREG:%[0-9]+]]:spr = FCONSTS 128, 14 /* CC::al */, $noreg
    ; VFP2: [[VREG:%[0-9]+]]:spr = VLDRS %const.0, 0, 14 /* CC::al */, $noreg :: (load (s32) from constant-pool)

    G_STORE %1(s32), %0 :: (store (s32))
    ; CHECK: VSTRS [[VREG]], [[PTR]], 0, 14 /* CC::al */, $noreg

    BX_RET 14, $noreg
    ; CHECK: BX_RET 14 /* CC::al */, $noreg
...
---
name:            test_fpconst_8bit_s64
# CHECK-LABEL: name: test_fpconst_8bit_s64
legalized:       true
regBankSelected: true
selected:        false
# CHECK: selected: true
registers:
  - { id: 0, class: gprb }
  - { id: 1, class: fprb }
# VFP3: constants: []
# VFP2: constants:
# VFP2-NEXT: id: 0
# VFP2-NEXT: value: double 5.000000e-01
# VFP2-NEXT: alignment: 8
# VFP2-NEXT: isTargetSpecific: false
body:             |
  bb.0:
    liveins: $r0

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

    %1(s64) = G_FCONSTANT double 5.0e-1
    ; VFP3: [[VREG:%[0-9]+]]:dpr = FCONSTD 96, 14 /* CC::al */, $noreg
    ; VFP2: [[VREG:%[0-9]+]]:dpr = VLDRD %const.0, 0, 14 /* CC::al */, $noreg :: (load (s64) from constant-pool)

    G_STORE %1(s64), %0 :: (store (s64))
    ; CHECK: VSTRD [[VREG]], [[PTR]], 0, 14 /* CC::al */, $noreg

    BX_RET 14, $noreg
    ; CHECK: BX_RET 14 /* CC::al */, $noreg
...