llvm-project/llvm/test/CodeGen/AArch64/sve-pseudos-expand-undef.mir

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# RUN: llc -mtriple=aarch64-linux-gnu -mattr=+sve -run-pass=aarch64-expand-pseudo -simplify-mir -verify-machineinstrs %s -o - | FileCheck %s
---
name: add_x
alignment: 4
tracksRegLiveness: true
liveins:
- { reg: '$p0' }
- { reg: '$z0' }
frameInfo:
maxCallFrameSize: 0
body: |
bb.0:
liveins: $p0, $z0
; CHECK: add_x
; CHECK-NOT: MOVPRFX
; CHECK: $z0 = FADD_ZPmZ_S renamable $p0, killed $z0, renamable $z0
; CHECK-NEXT: RET
renamable $z0 = FADD_ZPZZ_UNDEF_S renamable $p0, renamable $z0, killed renamable $z0
RET_ReallyLR
...