llvm/test/CodeGen/AArch64/GlobalISel/postlegalizer-combiner-split-zero-stores.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple aarch64 -run-pass=aarch64-postlegalizer-combiner -verify-machineinstrs %s -o - | FileCheck %s

...
---
name:            v2s64_split
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $x0

    ; Split a store of <2 x i64> into two scalar stores.

    ; CHECK-LABEL: name: v2s64_split
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
    ; CHECK-NEXT: %zero:_(s64) = G_CONSTANT i64 0
    ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
    ; CHECK-NEXT: [[PTR_ADD:%[0-9]+]]:_(p0) = G_PTR_ADD [[COPY]], [[C]](s64)
    ; CHECK-NEXT: G_STORE %zero(s64), [[COPY]](p0) :: (store (s64), align 16)
    ; CHECK-NEXT: G_STORE %zero(s64), [[PTR_ADD]](p0) :: (store (s64) into unknown-address + 8)
    ; CHECK-NEXT: RET_ReallyLR
    %0:_(p0) = COPY $x0
    %zero:_(s64) = G_CONSTANT i64 0
    %zerovec:_(<2 x s64>) = G_BUILD_VECTOR %zero, %zero
    G_STORE %zerovec(<2 x s64>), %0(p0) :: (store (<2 x s64>))
    RET_ReallyLR

...
---
name:            v4i32_split
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $x0

    ; CHECK-LABEL: name: v4i32_split
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
    ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
    ; CHECK-NEXT: [[C1:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
    ; CHECK-NEXT: [[PTR_ADD:%[0-9]+]]:_(p0) = G_PTR_ADD [[COPY]], [[C1]](s64)
    ; CHECK-NEXT: G_STORE [[C]](s64), [[COPY]](p0) :: (store (s64), align 16)
    ; CHECK-NEXT: G_STORE [[C]](s64), [[PTR_ADD]](p0) :: (store (s64) into unknown-address + 8)
    ; CHECK-NEXT: RET_ReallyLR
    %0:_(p0) = COPY $x0
    %zero:_(s32) = G_CONSTANT i32 0
    %zerovec:_(<4 x s32>) = G_BUILD_VECTOR %zero, %zero, %zero, %zero
    G_STORE %zerovec(<4 x s32>), %0(p0) :: (store (<4 x s32>))
    RET_ReallyLR

...
---
name:            v8i16_split
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $x0

    ; CHECK-LABEL: name: v8i16_split
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
    ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
    ; CHECK-NEXT: [[C1:%[0-9]+]]:_(s64) = G_CONSTANT i64 8
    ; CHECK-NEXT: [[PTR_ADD:%[0-9]+]]:_(p0) = G_PTR_ADD [[COPY]], [[C1]](s64)
    ; CHECK-NEXT: G_STORE [[C]](s64), [[COPY]](p0) :: (store (s64), align 16)
    ; CHECK-NEXT: G_STORE [[C]](s64), [[PTR_ADD]](p0) :: (store (s64) into unknown-address + 8)
    ; CHECK-NEXT: RET_ReallyLR
    %0:_(p0) = COPY $x0
    %zero:_(s16) = G_CONSTANT i16 0
    %zerovec:_(<8 x s16>) = G_BUILD_VECTOR %zero, %zero, %zero, %zero, %zero, %zero, %zero, %zero
    G_STORE %zerovec(<8 x s16>), %0(p0) :: (store (<8 x s16>))
    RET_ReallyLR

...

# Negative tests
---
name:            v2i32_nosplit
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $x0

    ; CHECK-LABEL: name: v2i32_nosplit
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
    ; CHECK-NEXT: %zero:_(s32) = G_CONSTANT i32 0
    ; CHECK-NEXT: %zerovec:_(<2 x s32>) = G_BUILD_VECTOR %zero(s32), %zero(s32)
    ; CHECK-NEXT: G_STORE %zerovec(<2 x s32>), [[COPY]](p0) :: (store (<2 x s32>))
    ; CHECK-NEXT: RET_ReallyLR
    %0:_(p0) = COPY $x0
    %zero:_(s32) = G_CONSTANT i32 0
    %zerovec:_(<2 x s32>) = G_BUILD_VECTOR %zero, %zero
    G_STORE %zerovec(<2 x s32>), %0(p0) :: (store (<2 x s32>))
    RET_ReallyLR

...
---
name:            multiple_uses
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $x0

    ; CHECK-LABEL: name: multiple_uses
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
    ; CHECK-NEXT: %zero:_(s64) = G_CONSTANT i64 0
    ; CHECK-NEXT: %zerovec:_(<2 x s64>) = G_BUILD_VECTOR %zero(s64), %zero(s64)
    ; CHECK-NEXT: G_STORE %zerovec(<2 x s64>), [[COPY]](p0) :: (store (<2 x s64>))
    ; CHECK-NEXT: $q0 = COPY %zerovec(<2 x s64>)
    ; CHECK-NEXT: RET_ReallyLR
    %0:_(p0) = COPY $x0
    %zero:_(s64) = G_CONSTANT i64 0
    %zerovec:_(<2 x s64>) = G_BUILD_VECTOR %zero, %zero
    G_STORE %zerovec(<2 x s64>), %0(p0) :: (store (<2 x s64>))
    $q0 = COPY %zerovec
    RET_ReallyLR

...
---
name:            truncating
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $x0

    ; CHECK-LABEL: name: truncating
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
    ; CHECK-NEXT: %zero:_(s64) = G_CONSTANT i64 0
    ; CHECK-NEXT: %zerovec:_(<2 x s64>) = G_BUILD_VECTOR %zero(s64), %zero(s64)
    ; CHECK-NEXT: G_STORE %zerovec(<2 x s64>), [[COPY]](p0) :: (store (<2 x s32>))
    ; CHECK-NEXT: RET_ReallyLR
    %0:_(p0) = COPY $x0
    %zero:_(s64) = G_CONSTANT i64 0
    %zerovec:_(<2 x s64>) = G_BUILD_VECTOR %zero, %zero
    G_STORE %zerovec(<2 x s64>), %0(p0) :: (store (<2 x s32>))
    RET_ReallyLR

...
---
name:            volatile
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $x0

    ; CHECK-LABEL: name: volatile
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
    ; CHECK-NEXT: %zero:_(s64) = G_CONSTANT i64 0
    ; CHECK-NEXT: %zerovec:_(<2 x s64>) = G_BUILD_VECTOR %zero(s64), %zero(s64)
    ; CHECK-NEXT: G_STORE %zerovec(<2 x s64>), [[COPY]](p0) :: (volatile store (<2 x s64>))
    ; CHECK-NEXT: RET_ReallyLR
    %0:_(p0) = COPY $x0
    %zero:_(s64) = G_CONSTANT i64 0
    %zerovec:_(<2 x s64>) = G_BUILD_VECTOR %zero, %zero
    G_STORE %zerovec(<2 x s64>), %0(p0) :: (volatile store (<2 x s64>))
    RET_ReallyLR

...
---
name:            s128_scalar
legalized:       true
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $x0

    ; Split a store of <2 x i64> into two scalar stores.

    ; CHECK-LABEL: name: s128_scalar
    ; CHECK: liveins: $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(p0) = COPY $x0
    ; CHECK-NEXT: %zero:_(s128) = G_CONSTANT i128 0
    ; CHECK-NEXT: G_STORE %zero(s128), [[COPY]](p0) :: (store (s128))
    ; CHECK-NEXT: RET_ReallyLR
    %0:_(p0) = COPY $x0
    %zero:_(s128) = G_CONSTANT i128 0
    G_STORE %zero(s128), %0(p0) :: (store (s128))
    RET_ReallyLR

...