third_party/llvm-7.0/llvm/test/CodeGen/ARM/GlobalISel/arm-legalize-vfp4.mir

# RUN: llc -mtriple arm-linux-gnueabihf -mattr=+vfp4 -float-abi=hard -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix HARD
# RUN: llc -mtriple arm-linux-gnueabihf -mattr=+vfp2 -float-abi=hard -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix SOFT -check-prefix HARD-ABI
# RUN: llc -mtriple arm-linux-gnueabi -mattr=+vfp4,+soft-float -float-abi=soft -run-pass=legalizer %s -o - | FileCheck %s -check-prefix CHECK -check-prefix SOFT -check-prefix SOFT-ABI
# RUN: llc -mtriple arm-linux-gnu -mattr=+vfp4,+soft-float -float-abi=soft -run-pass=legalizer %s -o - | FileCheck %s  -check-prefix CHECK -check-prefix SOFT -check-prefix SOFT-ABI
--- |
  define void @test_fma_float() { ret void }
  define void @test_fma_double() { ret void }
...
---
name:            test_fma_float
# CHECK-LABEL: name: test_fma_float
legalized:       false
# CHECK: legalized: true
regBankSelected: false
selected:        false
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
  - { id: 2, class: _ }
  - { id: 3, class: _ }
body:             |
  bb.0:
    liveins: $r0, $r1, $r2

    ; CHECK-DAG: [[X:%[0-9]+]]:_(s32) = COPY $r0
    ; CHECK-DAG: [[Y:%[0-9]+]]:_(s32) = COPY $r1
    ; CHECK-DAG: [[Z:%[0-9]+]]:_(s32) = COPY $r2
    %0(s32) = COPY $r0
    %1(s32) = COPY $r1
    %2(s32) = COPY $r2
    ; HARD: [[R:%[0-9]+]]:_(s32) = G_FMA [[X]], [[Y]], [[Z]]
    ; SOFT-NOT: G_FMA
    ; SOFT: ADJCALLSTACKDOWN
    ; SOFT-ABI-DAG: $r0 = COPY [[X]]
    ; SOFT-ABI-DAG: $r1 = COPY [[Y]]
    ; SOFT-ABI-DAG: $r2 = COPY [[Z]]
    ; SOFT-ABI: BL &fmaf, {{.*}}, implicit $r0, implicit $r1, implicit $r2, implicit-def $r0
    ; SOFT-ABI: [[R:%[0-9]+]]:_(s32) = COPY $r0
    ; HARD-ABI-DAG: $s0 = COPY [[X]]
    ; HARD-ABI-DAG: $s1 = COPY [[Y]]
    ; HARD-ABI-DAG: $s2 = COPY [[Z]]
    ; HARD-ABI: BL &fmaf, {{.*}}, implicit $s0, implicit $s1, implicit $s2, implicit-def $s0
    ; HARD-ABI: [[R:%[0-9]+]]:_(s32) = COPY $s0
    ; SOFT: ADJCALLSTACKUP
    ; SOFT-NOT: G_FMA
    %3(s32) = G_FMA %0, %1, %2
    ; CHECK: $r0 = COPY [[R]]
    $r0 = COPY %3(s32)
    BX_RET 14, $noreg, implicit $r0
...
---
name:            test_fma_double
# CHECK-LABEL: name: test_fma_double
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: _ }
  - { id: 6, class: _ }
  - { id: 7, class: _ }
  - { id: 8, class: _ }
body:             |
  bb.0:
    liveins: $r0, $r1, $r2, $r3

    ; CHECK-DAG: [[X0:%[0-9]+]]:_(s32) = COPY $r0
    ; CHECK-DAG: [[X1:%[0-9]+]]:_(s32) = COPY $r1
    ; CHECK-DAG: [[Y0:%[0-9]+]]:_(s32) = COPY $r2
    ; CHECK-DAG: [[Y1:%[0-9]+]]:_(s32) = COPY $r3
    %0(s32) = COPY $r0
    %1(s32) = COPY $r1
    %2(s32) = COPY $r2
    %3(s32) = COPY $r3
    ; HARD-DAG: [[X:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[X0]]
    ; HARD-DAG: [[Y:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[Y0]]
    ; HARD-ABI-DAG: [[X:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[X0]]
    ; HARD-ABI-DAG: [[Y:%[0-9]+]]:_(s64) = G_MERGE_VALUES [[Y0]]
    %4(s64) = G_MERGE_VALUES %0(s32), %1(s32)
    %5(s64) = G_MERGE_VALUES %2(s32), %3(s32)
    ; HARD: [[R:%[0-9]+]]:_(s64) = G_FMA [[X]], [[X]], [[Y]]
    ; SOFT-NOT: G_FMA
    ; SOFT: ADJCALLSTACKDOWN
    ; SOFT-ABI-DAG: $r{{[0-1]}} = COPY [[X0]]
    ; SOFT-ABI-DAG: $r{{[0-1]}} = COPY [[X1]]
    ; SOFT-ABI-DAG: $r{{[2-3]}} = COPY [[X0]]
    ; SOFT-ABI-DAG: $r{{[2-3]}} = COPY [[X1]]
    ; SOFT-ABI: [[SP1:%[0-9]+]]:_(p0) = COPY $sp
    ; SOFT-ABI: [[OFF1:%[0-9]+]]:_(s32) = G_CONSTANT i32 0
    ; SOFT-ABI: [[FI1:%[0-9]+]]:_(p0) = G_GEP [[SP1]], [[OFF1]](s32)

    ; FIXME: This ought to be align 8 but ARM's call lowering hardcodes it to 0
    ; SOFT-ABI: G_STORE [[Y0]](s32), [[FI1]](p0){{.*}}store 4 into stack, align 0)
    ; SOFT-ABI: [[OFF2:%[0-9]+]]:_(s32) = G_CONSTANT i32 4
    ; SOFT-ABI: [[FI2:%[0-9]+]]:_(p0) = G_GEP [[FI1]], [[OFF2]](s32)
    ; SOFT-ABI: G_STORE [[Y1]](s32), [[FI2]](p0){{.*}}store 4 into stack + 4)
    ; SOFT-ABI: BL &fma, {{.*}}, implicit $r0, implicit $r1, implicit $r2, implicit $r3, implicit-def $r0, implicit-def $r1
    ; SOFT-ABI-DAG: [[R0:%[0-9]+]]:_(s32) = COPY $r0
    ; SOFT-ABI-DAG: [[R1:%[0-9]+]]:_(s32) = COPY $r1
    ; HARD-ABI-DAG: $d0 = COPY [[X]]
    ; HARD-ABI-DAG: $d1 = COPY [[X]]
    ; HARD-ABI-DAG: $d2 = COPY [[Y]]
    ; HARD-ABI: BL &fma, {{.*}}, implicit $d0, implicit $d1, implicit $d2, implicit-def $d0
    ; HARD-ABI: [[R:%[0-9]+]]:_(s64) = COPY $d0
    ; SOFT: ADJCALLSTACKUP
    ; SOFT-NOT: G_FMA
    %6(s64) = G_FMA %4, %4, %5
    ; HARD: [[R0:%[0-9]+]]:_(s32), [[R1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[R]](s64)
    ; HARD-ABI: [[R0:%[0-9]+]]:_(s32), [[R1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[R]](s64)
    %7(s32),%8(s32) = G_UNMERGE_VALUES %6(s64)
    ; CHECK-DAG: $r0 = COPY [[R0]]
    ; CHECK-DAG: $r1 = COPY [[R1]]
    $r0 = COPY %7(s32)
    $r1 = COPY %8(s32)
    BX_RET 14, $noreg, implicit $r0, implicit $r1
...