llvm-project/llvm/test/CodeGen/AArch64/GlobalISel/select-extract.mir

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=aarch64-unknown-unknown -verify-machineinstrs -O0 -run-pass=instruction-select %s -o - | FileCheck %s
...
---
name: extract_64_128
legalized: true
regBankSelected: true
tracksRegLiveness: true
body: |
bb.0:
liveins: $q0
; CHECK-LABEL: name: extract_64_128
; CHECK: liveins: $q0
; CHECK: [[COPY:%[0-9]+]]:fpr128 = COPY $q0
; CHECK: [[COPY1:%[0-9]+]]:fpr64 = COPY [[COPY]].dsub
; CHECK: [[CPYi64_:%[0-9]+]]:fpr64 = CPYi64 [[COPY]], 1
; CHECK: $d3 = COPY [[COPY1]]
; CHECK: $d4 = COPY [[CPYi64_]]
; CHECK: RET_ReallyLR implicit $d3
%0:fpr(s128) = COPY $q0
%2:fpr(s64) = G_EXTRACT %0(s128), 0
%3:fpr(s64) = G_EXTRACT %0(s128), 64
$d3 = COPY %2(s64)
$d4 = COPY %3(s64)
RET_ReallyLR implicit $d3
...