llvm-project/llvm/test/CodeGen/AMDGPU/smrd-fold-offset.mir

# RUN: llc -march=amdgcn -mcpu=gfx900 -run-pass si-fix-sgpr-copies -o - %s | FileCheck -check-prefix=GCN %s

# GCN-LABEL: name: smrd_vgpr_offset_imm
# GCN: V_READFIRSTLANE_B32
# GCN: S_BUFFER_LOAD_DWORD_SGPR
---
name:            smrd_vgpr_offset_imm
body:             |
  bb.0:
    liveins: $sgpr0, $sgpr1, $sgpr2, $sgpr3, $vgpr0

    %4:vgpr_32 = COPY $vgpr0
    %3:sgpr_32 = COPY $sgpr3
    %2:sgpr_32 = COPY $sgpr2
    %1:sgpr_32 = COPY $sgpr1
    %0:sgpr_32 = COPY $sgpr0
    %5:sgpr_128 = REG_SEQUENCE %0, %subreg.sub0, %1, %subreg.sub1, %2, %subreg.sub2, %3, %subreg.sub3
    %6:sreg_32_xm0 = S_MOV_B32 4095
    %8:vgpr_32 = COPY %6
    %7:vgpr_32 = V_ADD_I32_e32 %4, killed %8, implicit-def dead $vcc, implicit $exec
    %10:sreg_32 = COPY %7
    %9:sreg_32_xm0_xexec = S_BUFFER_LOAD_DWORD_SGPR killed %5, killed %10, 0, 0
    $vgpr0 = COPY %9
    SI_RETURN_TO_EPILOG $vgpr0
...

# GCN-LABEL: name: smrd_vgpr_offset_imm_add_u32
# GCN: V_READFIRSTLANE_B32
# GCN: S_BUFFER_LOAD_DWORD_SGPR
---
name:            smrd_vgpr_offset_imm_add_u32
body:             |
  bb.0:
    liveins: $sgpr0, $sgpr1, $sgpr2, $sgpr3, $vgpr0

    %4:vgpr_32 = COPY $vgpr0
    %3:sgpr_32 = COPY $sgpr3
    %2:sgpr_32 = COPY $sgpr2
    %1:sgpr_32 = COPY $sgpr1
    %0:sgpr_32 = COPY $sgpr0
    %5:sgpr_128 = REG_SEQUENCE %0, %subreg.sub0, %1, %subreg.sub1, %2, %subreg.sub2, %3, %subreg.sub3
    %6:sreg_32_xm0 = S_MOV_B32 4095
    %8:vgpr_32 = COPY %6
    %7:vgpr_32 = V_ADD_U32_e32 %4, killed %8, implicit $exec
    %10:sreg_32 = COPY %7
    %9:sreg_32_xm0_xexec = S_BUFFER_LOAD_DWORD_SGPR killed %5, killed %10, 0, 0 :: (dereferenceable invariant load 4)
    $vgpr0 = COPY %9
    SI_RETURN_TO_EPILOG $vgpr0

...