llvm/test/CodeGen/Hexagon/rdf-phi-clobber.mir

# RUN: llc -march=hexagon -run-pass=hexagon-rdf-opt \
# RUN: -hexagon-rdf-dump -verify-machineinstrs -o /dev/null %s 2>&1 \
# RUN: | FileCheck %s

# Check that phi nodes that only have clobbering reaching defs are not created
# during graph construction. Check that there are no phi nodes for HVX registers

#CHECK-LABEL: --- %bb.1 ---
#CHECK-NOT: p{{[0-9]+}}: phi [+d{{[0-9]+}}<V{{[0-9]+}}>

--- |
  @.str.3 = private unnamed_addr constant [2 x i8] c"%d", align 8
  @.str.4 = private unnamed_addr constant [2 x i8] c"%d", align 8

  define internal fastcc void @foo() unnamed_addr {
  entry:
    ret void
  }

  declare dso_local noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr

---
name:            foo
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
callsEHReturn:   false
callsUnwindInit: false
hasEHContTarget: false
hasEHScopes:     false
hasEHFunclets:   false
isOutlined:      false
debugInstrRef:   false
failsVerification: false
tracksDebugUserValues: true
registers:       []
liveins:
  - { reg: '$d0', virtual-reg: '' }
  - { reg: '$d3', virtual-reg: '' }
  - { reg: '$r23', virtual-reg: '' }
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    8
  adjustsStack:    true
  hasCalls:        true
  stackProtector:  ''
  functionContext: ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  isCalleeSavedInfoValid: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
entry_values:    []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0.entry:
    successors: %bb.1
    liveins: $r25, $r26, $d11

    renamable $r16 = A2_tfrsi 0
    S2_storerd_io $r29, 0, renamable $d11 :: (store (s64) into stack)
    $r0 = A2_tfrsi @.str.3
    J2_call @printf, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit-def $r29, implicit-def dead $r0
    J2_jump %bb.1, implicit-def dead $pc

  bb.1:
    successors: %bb.2, %bb.1
    liveins: $r16, $r25, $r26

    S2_storeri_io $r29, 0, killed renamable $r25 :: (store (s32) into stack)
    $r0 = A2_tfrsi @.str.4
    S2_storeri_io $r29, 8, killed renamable $r26 :: (store (s64) into stack + 8)
    J2_call @printf, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit-def $r29, implicit-def dead $r0
    renamable $p0 = C2_cmpgti renamable $r16, 4
    renamable $r16 = nsw A2_addi killed renamable $r16, 1
    J2_jumpf killed renamable $p0, %bb.2, implicit-def dead $pc
    J2_jump %bb.1, implicit-def dead $pc

  bb.2:
    liveins: $r16, $r25, $r26

    PS_jmpret $r31, implicit-def dead $pc

...