File: combine-udivrem-use-bug.mir

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llvm-toolchain-19 1%3A19.1.7-3
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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -o - -mtriple=aarch64-unknown-unknown -run-pass=aarch64-prelegalizer-combiner -verify-machineinstrs %s | FileCheck %s
# Check that we don't miscompile this into G_UDIVREM because of the different
# first operands.
---
name:            no_combine_divrem_different_src1
body:             |
  bb.1:
    liveins: $w0

    ; CHECK-LABEL: name: no_combine_divrem_different_src1
    ; CHECK: liveins: $w0
    ; CHECK-NEXT: {{  $}}
    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
    ; CHECK-NEXT: [[UREM:%[0-9]+]]:_(s32) = G_UREM [[COPY]], [[COPY]]
    ; CHECK-NEXT: [[UDIV:%[0-9]+]]:_(s32) = G_UDIV [[UREM]], [[COPY]]
    ; CHECK-NEXT: $w0 = COPY [[UDIV]](s32)
    ; CHECK-NEXT: RET_ReallyLR implicit $w0
    %0:_(s32) = COPY $w0
    %1:_(s32) = G_UREM %0, %0
    %2:_(s32) = G_UDIV %1, %0
    $w0 = COPY %2(s32)
    RET_ReallyLR implicit $w0

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