src/third_party/llvm-project/llvm/test/CodeGen/MIR/AArch64/namedvregs.mir

# RUN: llc -mtriple=arm64-apple-ios11.0.0 -o - -run-pass none %s | FileCheck %s
...
---
name: namedVRegFunc
body:             |
  bb.0:
    liveins: $x0, $w0, $d0, $d1
    %0:fpr64 = COPY $d0
    %1:fpr64 = COPY $d1

    ;CHECK: %foo:gpr32 = COPY $w0
    ;CHECK: %bar:gpr32 = COPY $x0
    ;CHECK: %foobar:gpr32 = COPY %foo
    ;CHECK: COPY %foobar
    ;CHECK: %baz:gpr32 = COPY
    ;CHECK: $w0 = COPY %baz

    %foo:gpr32 = COPY $w0
    %bar:gpr32 = COPY $x0
    %foobar:gpr32 = COPY %foo
    %2:gpr32 = COPY %foobar
    %baz:gpr32 = COPY %2
    $w0 = COPY %baz
    RET_ReallyLR implicit $w0

...