test/CodeGen/AMDGPU/GlobalISel/inst-select-amdgcn.readfirstlane.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -march=amdgcn -mcpu=tahiti -run-pass=instruction-select -verify-machineinstrs -global-isel-abort=2 -pass-remarks-missed='gisel*' %s -o - 2> %t | FileCheck -check-prefix=GCN %s
# RUN: FileCheck -check-prefix=ERR %s < %t

# ERR: remark: <unknown>:0:0: cannot select: %1:sgpr(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.readfirstlane), %0:sgpr(s32) (in function: readfirstlane_s)

---
name: readfirstlane_v
legalized: true
regBankSelected: true
tracksRegLiveness: true

body: |
  bb.0:
    liveins: $vgpr0
    ; GCN-LABEL: name: readfirstlane_v
    ; GCN: liveins: $vgpr0
    ; GCN: [[COPY:%[0-9]+]]:vgpr_32 = COPY $vgpr0
    ; GCN: [[V_READFIRSTLANE_B32_:%[0-9]+]]:sreg_32 = V_READFIRSTLANE_B32 [[COPY]], implicit $exec
    ; GCN: S_ENDPGM 0, implicit [[V_READFIRSTLANE_B32_]]
    %0:vgpr(s32) = COPY $vgpr0
    %1:sgpr(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.readfirstlane), %0
    S_ENDPGM 0, implicit %1
...

---
name: readfirstlane_v_imm
legalized: true
regBankSelected: true
tracksRegLiveness: true

body: |
  bb.0:

    ; GCN-LABEL: name: readfirstlane_v_imm
    ; GCN: [[V_MOV_B32_e32_:%[0-9]+]]:vgpr_32 = V_MOV_B32_e32 123, implicit $exec
    ; GCN: [[COPY:%[0-9]+]]:sreg_32 = COPY [[V_MOV_B32_e32_]]
    ; GCN: [[S_MOV_B32_:%[0-9]+]]:sreg_32 = S_MOV_B32 [[COPY]]
    ; GCN: S_ENDPGM 0, implicit [[S_MOV_B32_]]
    %0:vgpr(s32) = G_CONSTANT i32 123
    %1:sgpr(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.readfirstlane), %0
    S_ENDPGM 0, implicit %1
...

# Make sure this fails to select
---
name: readfirstlane_s
legalized: true
regBankSelected: true
tracksRegLiveness: true

body: |
  bb.0:
    liveins: $sgpr0
    ; GCN-LABEL: name: readfirstlane_s
    ; GCN: liveins: $sgpr0
    ; GCN: [[COPY:%[0-9]+]]:sgpr(s32) = COPY $sgpr0
    ; GCN: [[INT:%[0-9]+]]:sgpr(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.readfirstlane), [[COPY]](s32)
    ; GCN: S_ENDPGM 0, implicit [[INT]](s32)
    %0:sgpr(s32) = COPY $sgpr0
    %1:sgpr(s32) = G_INTRINSIC intrinsic(@llvm.amdgcn.readfirstlane), %0
    S_ENDPGM 0, implicit %1
...