# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 5
# RUN: llc -verify-machineinstrs -mtriple aarch64--- \
# RUN: -run-pass=legalizer -mattr=+fullfp16 -global-isel %s -o - \
# RUN: | FileCheck %s
...
---
name:            test_v4f16.atan2
alignment:       4
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
body:             |
  bb.0:
    liveins: $d0, $d1

    ; CHECK-LABEL: name: test_v4f16.atan2
    ; CHECK: liveins: $d0, $d1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s16>) = COPY $d0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<4 x s16>) = COPY $d1
    ; CHECK-NEXT: [[UV:%[0-9]+]]:_(s16), [[UV1:%[0-9]+]]:_(s16), [[UV2:%[0-9]+]]:_(s16), [[UV3:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[COPY]](<4 x s16>)
    ; CHECK-NEXT: [[UV4:%[0-9]+]]:_(s16), [[UV5:%[0-9]+]]:_(s16), [[UV6:%[0-9]+]]:_(s16), [[UV7:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[COPY1]](<4 x s16>)
    ; CHECK-NEXT: [[FPEXT:%[0-9]+]]:_(s32) = G_FPEXT [[UV]](s16)
    ; CHECK-NEXT: [[FPEXT1:%[0-9]+]]:_(s32) = G_FPEXT [[UV4]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT1]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY2]](s32)
    ; CHECK-NEXT: [[FPEXT2:%[0-9]+]]:_(s32) = G_FPEXT [[UV1]](s16)
    ; CHECK-NEXT: [[FPEXT3:%[0-9]+]]:_(s32) = G_FPEXT [[UV5]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT2]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT3]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY3:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC1:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY3]](s32)
    ; CHECK-NEXT: [[FPEXT4:%[0-9]+]]:_(s32) = G_FPEXT [[UV2]](s16)
    ; CHECK-NEXT: [[FPEXT5:%[0-9]+]]:_(s32) = G_FPEXT [[UV6]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT4]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT5]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY4:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC2:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY4]](s32)
    ; CHECK-NEXT: [[FPEXT6:%[0-9]+]]:_(s32) = G_FPEXT [[UV3]](s16)
    ; CHECK-NEXT: [[FPEXT7:%[0-9]+]]:_(s32) = G_FPEXT [[UV7]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT6]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT7]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY5:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC3:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY5]](s32)
    ; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<4 x s16>) = G_BUILD_VECTOR [[FPTRUNC]](s16), [[FPTRUNC1]](s16), [[FPTRUNC2]](s16), [[FPTRUNC3]](s16)
    ; CHECK-NEXT: $d0 = COPY [[BUILD_VECTOR]](<4 x s16>)
    ; CHECK-NEXT: RET_ReallyLR implicit $d0
    %0:_(<4 x s16>) = COPY $d0
    %1:_(<4 x s16>) = COPY $d1
    %2:_(<4 x s16>) = G_FATAN2 %0, %1
    $d0 = COPY %2(<4 x s16>)
    RET_ReallyLR implicit $d0

...
---
name:            test_v8f16.atan2
alignment:       4
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
body:             |
  bb.0:
    liveins: $q0, $q1

    ; CHECK-LABEL: name: test_v8f16.atan2
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<8 x s16>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<8 x s16>) = COPY $q1
    ; CHECK-NEXT: [[UV:%[0-9]+]]:_(s16), [[UV1:%[0-9]+]]:_(s16), [[UV2:%[0-9]+]]:_(s16), [[UV3:%[0-9]+]]:_(s16), [[UV4:%[0-9]+]]:_(s16), [[UV5:%[0-9]+]]:_(s16), [[UV6:%[0-9]+]]:_(s16), [[UV7:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[COPY]](<8 x s16>)
    ; CHECK-NEXT: [[UV8:%[0-9]+]]:_(s16), [[UV9:%[0-9]+]]:_(s16), [[UV10:%[0-9]+]]:_(s16), [[UV11:%[0-9]+]]:_(s16), [[UV12:%[0-9]+]]:_(s16), [[UV13:%[0-9]+]]:_(s16), [[UV14:%[0-9]+]]:_(s16), [[UV15:%[0-9]+]]:_(s16) = G_UNMERGE_VALUES [[COPY1]](<8 x s16>)
    ; CHECK-NEXT: [[FPEXT:%[0-9]+]]:_(s32) = G_FPEXT [[UV]](s16)
    ; CHECK-NEXT: [[FPEXT1:%[0-9]+]]:_(s32) = G_FPEXT [[UV8]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT1]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY2]](s32)
    ; CHECK-NEXT: [[FPEXT2:%[0-9]+]]:_(s32) = G_FPEXT [[UV1]](s16)
    ; CHECK-NEXT: [[FPEXT3:%[0-9]+]]:_(s32) = G_FPEXT [[UV9]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT2]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT3]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY3:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC1:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY3]](s32)
    ; CHECK-NEXT: [[FPEXT4:%[0-9]+]]:_(s32) = G_FPEXT [[UV2]](s16)
    ; CHECK-NEXT: [[FPEXT5:%[0-9]+]]:_(s32) = G_FPEXT [[UV10]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT4]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT5]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY4:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC2:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY4]](s32)
    ; CHECK-NEXT: [[FPEXT6:%[0-9]+]]:_(s32) = G_FPEXT [[UV3]](s16)
    ; CHECK-NEXT: [[FPEXT7:%[0-9]+]]:_(s32) = G_FPEXT [[UV11]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT6]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT7]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY5:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC3:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY5]](s32)
    ; CHECK-NEXT: [[FPEXT8:%[0-9]+]]:_(s32) = G_FPEXT [[UV4]](s16)
    ; CHECK-NEXT: [[FPEXT9:%[0-9]+]]:_(s32) = G_FPEXT [[UV12]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT8]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT9]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY6:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC4:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY6]](s32)
    ; CHECK-NEXT: [[FPEXT10:%[0-9]+]]:_(s32) = G_FPEXT [[UV5]](s16)
    ; CHECK-NEXT: [[FPEXT11:%[0-9]+]]:_(s32) = G_FPEXT [[UV13]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT10]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT11]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY7:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC5:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY7]](s32)
    ; CHECK-NEXT: [[FPEXT12:%[0-9]+]]:_(s32) = G_FPEXT [[UV6]](s16)
    ; CHECK-NEXT: [[FPEXT13:%[0-9]+]]:_(s32) = G_FPEXT [[UV14]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT12]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT13]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY8:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC6:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY8]](s32)
    ; CHECK-NEXT: [[FPEXT14:%[0-9]+]]:_(s32) = G_FPEXT [[UV7]](s16)
    ; CHECK-NEXT: [[FPEXT15:%[0-9]+]]:_(s32) = G_FPEXT [[UV15]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT14]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT15]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY9:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC7:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY9]](s32)
    ; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<8 x s16>) = G_BUILD_VECTOR [[FPTRUNC]](s16), [[FPTRUNC1]](s16), [[FPTRUNC2]](s16), [[FPTRUNC3]](s16), [[FPTRUNC4]](s16), [[FPTRUNC5]](s16), [[FPTRUNC6]](s16), [[FPTRUNC7]](s16)
    ; CHECK-NEXT: $q0 = COPY [[BUILD_VECTOR]](<8 x s16>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<8 x s16>) = COPY $q0
    %1:_(<8 x s16>) = COPY $q1
    %2:_(<8 x s16>) = G_FATAN2 %0, %1
    $q0 = COPY %2(<8 x s16>)
    RET_ReallyLR implicit $q0

...
---
name:            test_v2f32.atan2
alignment:       4
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
body:             |
  bb.0:
    liveins: $d0, $d1

    ; CHECK-LABEL: name: test_v2f32.atan2
    ; CHECK: liveins: $d0, $d1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<2 x s32>) = COPY $d1
    ; CHECK-NEXT: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[COPY]](<2 x s32>)
    ; CHECK-NEXT: [[UV2:%[0-9]+]]:_(s32), [[UV3:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[COPY1]](<2 x s32>)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[UV]](s32)
    ; CHECK-NEXT: $s1 = COPY [[UV2]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[UV1]](s32)
    ; CHECK-NEXT: $s1 = COPY [[UV3]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY3:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<2 x s32>) = G_BUILD_VECTOR [[COPY2]](s32), [[COPY3]](s32)
    ; CHECK-NEXT: $d0 = COPY [[BUILD_VECTOR]](<2 x s32>)
    ; CHECK-NEXT: RET_ReallyLR implicit $d0
    %0:_(<2 x s32>) = COPY $d0
    %1:_(<2 x s32>) = COPY $d1
    %2:_(<2 x s32>) = G_FATAN2 %0, %1
    $d0 = COPY %2(<2 x s32>)
    RET_ReallyLR implicit $d0

...
---
name:            test_v4f32.atan2
alignment:       4
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
body:             |
  bb.0:
    liveins: $q0, $q1

    ; CHECK-LABEL: name: test_v4f32.atan2
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<4 x s32>) = COPY $q1
    ; CHECK-NEXT: [[UV:%[0-9]+]]:_(s32), [[UV1:%[0-9]+]]:_(s32), [[UV2:%[0-9]+]]:_(s32), [[UV3:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[COPY]](<4 x s32>)
    ; CHECK-NEXT: [[UV4:%[0-9]+]]:_(s32), [[UV5:%[0-9]+]]:_(s32), [[UV6:%[0-9]+]]:_(s32), [[UV7:%[0-9]+]]:_(s32) = G_UNMERGE_VALUES [[COPY1]](<4 x s32>)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[UV]](s32)
    ; CHECK-NEXT: $s1 = COPY [[UV4]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[UV1]](s32)
    ; CHECK-NEXT: $s1 = COPY [[UV5]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY3:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[UV2]](s32)
    ; CHECK-NEXT: $s1 = COPY [[UV6]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY4:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[UV3]](s32)
    ; CHECK-NEXT: $s1 = COPY [[UV7]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY5:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<4 x s32>) = G_BUILD_VECTOR [[COPY2]](s32), [[COPY3]](s32), [[COPY4]](s32), [[COPY5]](s32)
    ; CHECK-NEXT: $q0 = COPY [[BUILD_VECTOR]](<4 x s32>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<4 x s32>) = COPY $q0
    %1:_(<4 x s32>) = COPY $q1
    %2:_(<4 x s32>) = G_FATAN2 %0, %1
    $q0 = COPY %2(<4 x s32>)
    RET_ReallyLR implicit $q0

...
---
name:            test_v2f64.atan2
alignment:       4
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
body:             |
  bb.0:
    liveins: $q0, $q1

    ; CHECK-LABEL: name: test_v2f64.atan2
    ; CHECK: liveins: $q0, $q1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s64>) = COPY $q0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<2 x s64>) = COPY $q1
    ; CHECK-NEXT: [[UV:%[0-9]+]]:_(s64), [[UV1:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[COPY]](<2 x s64>)
    ; CHECK-NEXT: [[UV2:%[0-9]+]]:_(s64), [[UV3:%[0-9]+]]:_(s64) = G_UNMERGE_VALUES [[COPY1]](<2 x s64>)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $d0 = COPY [[UV]](s64)
    ; CHECK-NEXT: $d1 = COPY [[UV2]](s64)
    ; CHECK-NEXT: BL &atan2, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $d0, implicit $d1, implicit-def $d0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s64) = COPY $d0
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $d0 = COPY [[UV1]](s64)
    ; CHECK-NEXT: $d1 = COPY [[UV3]](s64)
    ; CHECK-NEXT: BL &atan2, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $d0, implicit $d1, implicit-def $d0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY3:%[0-9]+]]:_(s64) = COPY $d0
    ; CHECK-NEXT: [[BUILD_VECTOR:%[0-9]+]]:_(<2 x s64>) = G_BUILD_VECTOR [[COPY2]](s64), [[COPY3]](s64)
    ; CHECK-NEXT: $q0 = COPY [[BUILD_VECTOR]](<2 x s64>)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %0:_(<2 x s64>) = COPY $q0
    %1:_(<2 x s64>) = COPY $q1
    %2:_(<2 x s64>) = G_FATAN2 %0, %1
    $q0 = COPY %2(<2 x s64>)
    RET_ReallyLR implicit $q0

...
---
name:            test_atan2_half
alignment:       4
tracksRegLiveness: true
registers:
  - { id: 0, class: _ }
  - { id: 1, class: _ }
body:             |
  bb.0:
    liveins: $h0, $h1

    ; CHECK-LABEL: name: test_atan2_half
    ; CHECK: liveins: $h0, $h1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s16) = COPY $h0
    ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(s16) = COPY $h1
    ; CHECK-NEXT: [[FPEXT:%[0-9]+]]:_(s32) = G_FPEXT [[COPY]](s16)
    ; CHECK-NEXT: [[FPEXT1:%[0-9]+]]:_(s32) = G_FPEXT [[COPY1]](s16)
    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: $s0 = COPY [[FPEXT]](s32)
    ; CHECK-NEXT: $s1 = COPY [[FPEXT1]](s32)
    ; CHECK-NEXT: BL &atan2f, csr_aarch64_aapcs, implicit-def $lr, implicit $sp, implicit $s0, implicit $s1, implicit-def $s0
    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def $sp, implicit $sp
    ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $s0
    ; CHECK-NEXT: [[FPTRUNC:%[0-9]+]]:_(s16) = G_FPTRUNC [[COPY2]](s32)
    ; CHECK-NEXT: $h0 = COPY [[FPTRUNC]](s16)
    ; CHECK-NEXT: RET_ReallyLR implicit $h0
    %0:_(s16) = COPY $h0
    %1:_(s16) = COPY $h1
    %2:_(s16) = G_FATAN2 %0, %1
    $h0 = COPY %2(s16)
    RET_ReallyLR implicit $h0