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TheRock/compiler/amd-llvm/llvm/test/CodeGen/AArch64/machine-combiner-subregs.mir
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py UTC_ARGS: --version 6
# RUN: llc -mtriple=aarch64-gnu-linux -mcpu=neoverse-n2 -run-pass=machine-combiner -o - %s | FileCheck %s
# Make sure machine combiner doesn't drop subregister indexes.
---
name: reassociate_adds2_reassoc
tracksRegLiveness: true
body: |
bb.0:
liveins: $q0, $q1, $q2, $q3
; CHECK-LABEL: name: reassociate_adds2_reassoc
; CHECK: liveins: $q0, $q1, $q2, $q3
; CHECK-NEXT: {{ $}}
; CHECK-NEXT: [[COPY:%[0-9]+]]:fpr128 = COPY $q0
; CHECK-NEXT: [[COPY1:%[0-9]+]]:fpr128 = COPY $q1
; CHECK-NEXT: [[COPY2:%[0-9]+]]:fpr128 = COPY $q2
; CHECK-NEXT: [[COPY3:%[0-9]+]]:fpr128 = COPY $q3
; CHECK-NEXT: [[FADDSrr:%[0-9]+]]:fpr32 = nsz reassoc nofpexcept FADDSrr [[COPY]].ssub, [[COPY1]].ssub, implicit $fpcr
; CHECK-NEXT: [[FADDSrr1:%[0-9]+]]:fpr32 = nsz reassoc nofpexcept FADDSrr [[COPY2]].ssub, [[COPY3]].ssub, implicit $fpcr
; CHECK-NEXT: [[FADDSrr2:%[0-9]+]]:fpr32 = nsz reassoc nofpexcept FADDSrr killed [[FADDSrr1]], killed [[FADDSrr]], implicit $fpcr
; CHECK-NEXT: $s0 = COPY [[FADDSrr2]]
; CHECK-NEXT: RET_ReallyLR implicit $s0
%0:fpr128 = COPY $q0
%1:fpr128 = COPY $q1
%2:fpr128 = COPY $q2
%3:fpr128 = COPY $q3
%4:fpr32 = nsz reassoc nofpexcept FADDSrr %0.ssub, %1.ssub, implicit $fpcr
%5:fpr32 = nsz reassoc nofpexcept FADDSrr %2.ssub, killed %4, implicit $fpcr
%6:fpr32 = nsz reassoc nofpexcept FADDSrr killed %5, %3.ssub, implicit $fpcr
$s0 = COPY %6
RET_ReallyLR implicit $s0
...