# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple x86_64 -run-pass=x86-prelegalizer-combiner %s -o - | FileCheck %s
# RUN: llc -mtriple x86_64 -passes=x86-prelegalizer-combiner-pass %s -o - | FileCheck %s

---
name:            mul_0
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $eax
    ; Fold (x * 0) -> 0
    ; CHECK-LABEL: name: mul_0
    ; CHECK: liveins: $eax
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: %cst:_(s32) = G_CONSTANT i32 0
    ; CHECK-NEXT: $eax = COPY %cst(s32)
    ; CHECK-NEXT: RET implicit $eax
    %x:_(s32) = COPY $eax
    %cst:_(s32) = G_CONSTANT i32 0
    %op:_(s32) = G_MUL %x(s32), %cst
    $eax = COPY %op(s32)
    RET implicit $eax
...
---
name:            mul_0_cant_replace
tracksRegLiveness: true
body:             |
  bb.1.entry:
    liveins: $eax
    ; Fold (x * 0) -> 0
    ; CHECK-LABEL: name: mul_0_cant_replace
    ; CHECK: liveins: $eax
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: %x:_(s32) = COPY $eax
    ; CHECK-NEXT: %cst:_(s32) = G_CONSTANT i32 0
    ; CHECK-NEXT: %op:gpr(s32) = G_MUL %x, %cst
    ; CHECK-NEXT: $eax = COPY %op(s32)
    ; CHECK-NEXT: RET implicit $eax
    %x:_(s32) = COPY $eax
    %cst:_(s32) = G_CONSTANT i32 0
    %op:gpr(s32) = G_MUL %x(s32), %cst
    $eax = COPY %op(s32)
    RET implicit $eax
...
---
name:            look_through_zext
tracksRegLiveness: true
body:             |
  bb.0:
    liveins: $rax
    ; CHECK-LABEL: name: look_through_zext
    ; CHECK: liveins: $rax
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: %zero:_(s8) = G_CONSTANT i8 0
    ; CHECK-NEXT: %zext_zero:_(s64) = G_ZEXT %zero(s8)
    ; CHECK-NEXT: $rax = COPY %zext_zero(s64)
    ; CHECK-NEXT: RET implicit $rax
    %zero:_(s8) = G_CONSTANT i8 0
    %zext_zero:_(s64) = G_ZEXT %zero(s8)
    %c:_(s64) = G_CONSTANT i64 72340172838076673
    %mul:_(s64) = G_MUL %c, %zext_zero
    $rax = COPY %mul(s64)
    RET implicit $rax
...
---
name:            mul_1_shift_of_shift
liveins:
  - { reg: '$rax' }
body:             |
  bb.1:
    liveins: $rax

    ; CHECK-LABEL: name: mul_1_shift_of_shift
    ; CHECK: liveins: $rax
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s64) = COPY $rax
    ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
    ; CHECK-NEXT: [[SHL:%[0-9]+]]:_(s64) = G_SHL [[COPY]], [[C]](s64)
    ; CHECK-NEXT: [[OR:%[0-9]+]]:_(s64) = G_OR [[SHL]], [[C]]
    ; CHECK-NEXT: $rax = COPY [[OR]](s64)
    ; CHECK-NEXT: RET implicit $rax
    %0:_(s64) = COPY $rax
    %1:_(s64) = G_CONSTANT i64 1
    %2:_(s64) = G_SHL %0, %1(s64)
    %3:_(s64) = G_OR %2, %1
    %4:_(s64) = G_MUL %3, %1
    $rax = COPY %4(s64)
    RET implicit $rax
...