xref: /llvm-project/llvm/test/CodeGen/AArch64/GlobalISel/combine-udivrem-use-bug.mir (revision 5ae0472694f5d53c0b889a48dc042961291d2341)
1# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2# RUN: llc -o - -mtriple=aarch64-unknown-unknown -run-pass=aarch64-prelegalizer-combiner -verify-machineinstrs %s | FileCheck %s
3# Check that we don't miscompile this into G_UDIVREM because of the different
4# first operands.
5---
6name:            no_combine_divrem_different_src1
7body:             |
8  bb.1:
9    liveins: $w0
10
11    ; CHECK-LABEL: name: no_combine_divrem_different_src1
12    ; CHECK: liveins: $w0
13    ; CHECK-NEXT: {{  $}}
14    ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(s32) = COPY $w0
15    ; CHECK-NEXT: [[UREM:%[0-9]+]]:_(s32) = G_UREM [[COPY]], [[COPY]]
16    ; CHECK-NEXT: [[UDIV:%[0-9]+]]:_(s32) = G_UDIV [[UREM]], [[COPY]]
17    ; CHECK-NEXT: $w0 = COPY [[UDIV]](s32)
18    ; CHECK-NEXT: RET_ReallyLR implicit $w0
19    %0:_(s32) = COPY $w0
20    %1:_(s32) = G_UREM %0, %0
21    %2:_(s32) = G_UDIV %1, %0
22    $w0 = COPY %2(s32)
23    RET_ReallyLR implicit $w0
24
25...
26