test/CodeGen/AArch64/sve-pseudos-expand-undef.mir

# RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve -run-pass=aarch64-expand-pseudo -simplify-mir -verify-machineinstrs %s -o - | FileCheck %s
---
name:            add_x
alignment:       4
tracksRegLiveness: true
liveins:
  - { reg: '$p0' }
  - { reg: '$z0' }
frameInfo:
  maxCallFrameSize: 0
body:             |
  bb.0:
    liveins: $p0, $z0

    ; CHECK: name: add_x
    ; CHECK-NOT: MOVPRFX
    ; CHECK: $z0 = FADD_ZPmZ_S renamable $p0, killed $z0, renamable $z0
    ; CHECK-NEXT: RET
    renamable $z0 = FADD_ZPZZ_S_UNDEF renamable $p0, renamable $z0, killed renamable $z0
    RET_ReallyLR

...

---
name: expand_mls_to_msb
body:             |
  bb.0:
    ; CHECK: name: expand_mls_to_msb
    ; CHECK: {{.*}} MSB_ZPmZZ_B {{.*}}
    renamable $p0 = PTRUE_B 31, implicit $vg
    renamable $z0 = MLS_ZPZZZ_B_UNDEF killed renamable $p0, killed renamable $z2, killed renamable $z0, killed renamable $z1
    RET_ReallyLR implicit $z0
...

---
name: expand_mla_to_mad
body:             |
  bb.0:
    ; CHECK: name: expand_mla_to_mad
    ; CHECK: {{.*}} MAD_ZPmZZ_B {{.*}}
    renamable $p0 = PTRUE_B 31, implicit $vg
    renamable $z0 = MLA_ZPZZZ_B_UNDEF killed renamable $p0, killed renamable $z2, killed renamable $z0, killed renamable $z1
    RET_ReallyLR implicit $z0
...

---
name: expand_transfer_implicit_defs
body:             |
  bb.0:
    ; CHECK: name: expand_transfer_implicit_defs
    ; CHECK:      BUNDLE
    ; CHECK-SAME: implicit-def $z0_z1_z2_z3
    liveins: $z1, $z2, $p0
    renamable $z0 = FADD_ZPZZ_D_UNDEF killed $p0, killed $z1, killed $z2, implicit-def $z0_z1_z2_z3
    RET_ReallyLR implicit $z0_z1_z2_z3
...

---
name: unary_undef_operand
body:             |
  bb.0:
    liveins: $p0, $z0

    ; CHECK: name: unary_undef_operand
    ; CHECK: $z0 = MOVPRFX_ZZ undef $z1
    ; CHECK: $z0 = ABS_ZPmZ_S internal killed $z0, renamable $p0, killed undef renamable $z1
    ; NOTE: Unary _UNDEF psuedo instructions ignore the passthru operand.
    renamable $z0 = ABS_ZPmZ_S_UNDEF renamable $z0, renamable $p0, killed undef renamable $z1
    RET_ReallyLR

...

---
name: binop_undef_operand
body:             |
  bb.0:
    liveins: $p0, $z1

    ; CHECK: name: binop_undef_operand
    ; CHECK-NOT: MOVPRFX
    ; CHECK: $z0 = SMIN_ZPmZ_S renamable $p0, killed undef $z0, killed renamable $z1
    renamable $z0 = SMIN_ZPZZ_S_UNDEF renamable $p0, undef renamable $z0, killed renamable $z1
    RET_ReallyLR

...

---
name: binop_undef_operand_requires_movpfrx
body:             |
  bb.0:
    liveins: $p0, $z1

    ; CHECK: name: binop_undef_operand_requires_movpfrx
    ; CHECK: $z0 = MOVPRFX_ZZ undef $z2
    ; CHECK: $z0 = SMIN_ZPmZ_S renamable $p0, internal killed $z0, killed renamable $z1
    renamable $z0 = SMIN_ZPZZ_S_UNDEF renamable $p0, undef renamable $z2, killed renamable $z1
    RET_ReallyLR

...

---
name: binop_undef_operand_requires_zeroing_movpfrx
body:             |
  bb.0:
    liveins: $p0, $z1

    ; CHECK: name: binop_undef_operand_requires_zeroing_movpfrx
    ; CHECK: $z0 = MOVPRFX_ZPzZ_S $p0, undef $z2
    ; CHECK: $z0 = ADD_ZPmZ_S renamable $p0, internal killed $z0, killed renamable $z1
    renamable $z0 = ADD_ZPZZ_S_ZERO renamable $p0, undef renamable $z2, killed renamable $z1
    RET_ReallyLR

...

---
name: ternaryop_undef_operand
body:             |
  bb.0:
    liveins: $p0, $z1, $z2
    ; CHECK: name: ternaryop_undef_operand
    ; CHECK-NOT: MOVPRFX
    ; CHECK: $z0 = MLA_ZPmZZ_B killed renamable $p0, killed undef $z0, killed renamable $z1, killed renamable $z2
    renamable $z0 = MLA_ZPZZZ_B_UNDEF killed renamable $p0, killed undef renamable $z0, killed renamable $z1, killed renamable $z2
    RET_ReallyLR implicit $z0
...

---
name: ternaryop_undef_operand_requires_movprfx
body:             |
  bb.0:
    liveins: $p0, $z1, $z2
    ; CHECK: name: ternaryop_undef_operand_requires_movprfx
    ; CHECK: $z0 = MOVPRFX_ZZ undef $z3
    ; CHECK: $z0 = MLA_ZPmZZ_B killed renamable $p0, internal killed $z0, killed renamable $z1, killed renamable $z2
    renamable $z0 = MLA_ZPZZZ_B_UNDEF killed renamable $p0, killed undef renamable $z3, killed renamable $z1, killed renamable $z2
    RET_ReallyLR implicit $z0
...