movimm-wzr.mir 906 Bytes
# RUN: llc -run-pass=aarch64-expand-pseudo %s -o - | FileCheck %s

--- |
  ; ModuleID = 'simple.ll'
  source_filename = "simple.ll"
  target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
  target triple = "aarch64--linux-gnu"

  define i32 @test_mov_0() {
    ret i32 42
  }

...
---
name:            test_mov_0
alignment:       4
exposesReturnsTwice: false
tracksRegLiveness: false
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    0
  adjustsStack:    false
  hasCalls:        false
  maxCallFrameSize: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
body:             |
  bb.0 (%ir-block.0):
    $wzr = MOVi32imm 42
    $xzr = MOVi64imm 42
    RET_ReallyLR implicit killed $w0

...

# CHECK: bb.0
# CHECK-NEXT: RET undef $lr