prelegalizer-combiner-mulo-zero.mir

# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple aarch64 -debugify-and-strip-all-safe -run-pass=aarch64-prelegalizer-combiner --aarch64prelegalizercombiner-only-enable-rule="mulo_by_0" -global-isel -verify-machineinstrs %s -o - | FileCheck %s
# REQUIRES: asserts

# (G_*MULO x, 0) -> 0 + no carry out

...
---
name:            umulo_zero
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1
    ; CHECK-LABEL: name: umulo_zero
    ; CHECK: liveins: $w0, $w1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: %zero:_(s32) = G_CONSTANT i32 0
    ; CHECK-NEXT: %mulo:_(s32) = COPY %zero(s32)
    ; CHECK-NEXT: %carry:_(s1) = G_CONSTANT i1 false
    ; CHECK-NEXT: %carry_wide:_(s32) = G_ZEXT %carry(s1)
    ; CHECK-NEXT: $w0 = COPY %mulo(s32)
    ; CHECK-NEXT: $w1 = COPY %carry_wide(s32)
    ; CHECK-NEXT: RET_ReallyLR implicit $w0
    %lhs:_(s32) = COPY $w0
    %zero:_(s32) = G_CONSTANT i32 0
    %mulo:_(s32), %carry:_(s1) = G_UMULO %lhs, %zero
    %carry_wide:_(s32) = G_ZEXT %carry(s1)
    $w0 = COPY %mulo(s32)
    $w1 = COPY %carry_wide
    RET_ReallyLR implicit $w0
...
---
name:            smulo_zero
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1
    ; CHECK-LABEL: name: smulo_zero
    ; CHECK: liveins: $w0, $w1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: %zero:_(s32) = G_CONSTANT i32 0
    ; CHECK-NEXT: %mulo:_(s32) = COPY %zero(s32)
    ; CHECK-NEXT: %carry:_(s1) = G_CONSTANT i1 false
    ; CHECK-NEXT: %carry_wide:_(s32) = G_ZEXT %carry(s1)
    ; CHECK-NEXT: $w0 = COPY %mulo(s32)
    ; CHECK-NEXT: $w1 = COPY %carry_wide(s32)
    ; CHECK-NEXT: RET_ReallyLR implicit $w0
    %lhs:_(s32) = COPY $w0
    %zero:_(s32) = G_CONSTANT i32 0
    %mulo:_(s32), %carry:_(s1) = G_SMULO %lhs, %zero
    %carry_wide:_(s32) = G_ZEXT %carry(s1)
    $w0 = COPY %mulo(s32)
    $w1 = COPY %carry_wide
    RET_ReallyLR implicit $w0
...
---
name:            wrong_cst
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $w0, $w1
    ; CHECK-LABEL: name: wrong_cst
    ; CHECK: liveins: $w0, $w1
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: %lhs:_(s32) = COPY $w0
    ; CHECK-NEXT: %not_zero:_(s32) = G_CONSTANT i32 3
    ; CHECK-NEXT: %mulo:_(s32), %carry:_(s1) = G_UMULO %lhs, %not_zero
    ; CHECK-NEXT: %carry_wide:_(s32) = G_ZEXT %carry(s1)
    ; CHECK-NEXT: $w0 = COPY %mulo(s32)
    ; CHECK-NEXT: $w1 = COPY %carry_wide(s32)
    ; CHECK-NEXT: RET_ReallyLR implicit $w0
    %lhs:_(s32) = COPY $w0
    %not_zero:_(s32) = G_CONSTANT i32 3
    %mulo:_(s32), %carry:_(s1) = G_UMULO %lhs, %not_zero
    %carry_wide:_(s32) = G_ZEXT %carry(s1)
    $w0 = COPY %mulo(s32)
    $w1 = COPY %carry_wide
    RET_ReallyLR implicit $w0
...
---
name:            umulo_vec_zero
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $q0, $x0
    ; CHECK-LABEL: name: umulo_vec_zero
    ; CHECK: liveins: $q0, $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: %zero:_(s64) = G_CONSTANT i64 0
    ; CHECK-NEXT: %zero_vec:_(<2 x s64>) = G_BUILD_VECTOR %zero(s64), %zero(s64)
    ; CHECK-NEXT: %mulo:_(<2 x s64>) = COPY %zero_vec(<2 x s64>)
    ; CHECK-NEXT: [[C:%[0-9]+]]:_(s1) = G_CONSTANT i1 false
    ; CHECK-NEXT: %carry:_(<2 x s1>) = G_BUILD_VECTOR [[C]](s1), [[C]](s1)
    ; CHECK-NEXT: %carry_elt_0:_(s1) = G_EXTRACT_VECTOR_ELT %carry(<2 x s1>), %zero(s64)
    ; CHECK-NEXT: %carry_wide:_(s64) = G_ZEXT %carry_elt_0(s1)
    ; CHECK-NEXT: $q0 = COPY %mulo(<2 x s64>)
    ; CHECK-NEXT: $x0 = COPY %carry_wide(s64)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %lhs:_(<2 x s64>) = COPY $q0
    %zero:_(s64) = G_CONSTANT i64 0
    %zero_vec:_(<2 x s64>) = G_BUILD_VECTOR %zero, %zero
    %mulo:_(<2 x s64>), %carry:_(<2 x s1>) = G_UMULO %lhs, %zero_vec
    %carry_elt_0:_(s1) = G_EXTRACT_VECTOR_ELT %carry:_(<2 x s1>), %zero:_(s64)
    %carry_wide:_(s64) = G_ZEXT %carry_elt_0
    $q0 = COPY %mulo(<2 x s64>)
    $x0 = COPY %carry_wide
    RET_ReallyLR implicit $q0
...
---
name:            smulo_vec_zero
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $q0, $x0
    ; CHECK-LABEL: name: smulo_vec_zero
    ; CHECK: liveins: $q0, $x0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: %zero:_(s64) = G_CONSTANT i64 0
    ; CHECK-NEXT: %zero_vec:_(<2 x s64>) = G_BUILD_VECTOR %zero(s64), %zero(s64)
    ; CHECK-NEXT: %mulo:_(<2 x s64>) = COPY %zero_vec(<2 x s64>)
    ; CHECK-NEXT: [[C:%[0-9]+]]:_(s1) = G_CONSTANT i1 false
    ; CHECK-NEXT: %carry:_(<2 x s1>) = G_BUILD_VECTOR [[C]](s1), [[C]](s1)
    ; CHECK-NEXT: %carry_elt_0:_(s1) = G_EXTRACT_VECTOR_ELT %carry(<2 x s1>), %zero(s64)
    ; CHECK-NEXT: %carry_wide:_(s64) = G_ZEXT %carry_elt_0(s1)
    ; CHECK-NEXT: $q0 = COPY %mulo(<2 x s64>)
    ; CHECK-NEXT: $x0 = COPY %carry_wide(s64)
    ; CHECK-NEXT: RET_ReallyLR implicit $q0
    %lhs:_(<2 x s64>) = COPY $q0
    %zero:_(s64) = G_CONSTANT i64 0
    %zero_vec:_(<2 x s64>) = G_BUILD_VECTOR %zero, %zero
    %mulo:_(<2 x s64>), %carry:_(<2 x s1>) = G_SMULO %lhs, %zero_vec
    %carry_elt_0:_(s1) = G_EXTRACT_VECTOR_ELT %carry:_(<2 x s1>), %zero:_(s64)
    %carry_wide:_(s64) = G_ZEXT %carry_elt_0
    $q0 = COPY %mulo(<2 x s64>)
    $x0 = COPY %carry_wide
    RET_ReallyLR implicit $q0
llvm/llvm/test/CodeGen/AArch64/GlobalISel/prelegalizer-combiner-mulo-zero.mir
