llvm/test/CodeGen/Hexagon/cext-opt-block-addr.mir

# REQUIRES: asserts
# RUN: llc -mtriple=hexagon -run-pass hexagon-cext-opt %s -o - | FileCheck %s

# Check that the HexagonConstantExtenders pass does not assert when block
# addresses from different functions are used
# CHECK-LABEL: name: wibble
# CHECK: A2_tfrsi blockaddress(@baz
# CHECK: A2_tfrsi blockaddress(@wibble

--- |
  target triple = "hexagon"

  define dso_local void @baz() {
  bb:
    br label %bb1

  bb1:                                              ; preds = %bb
    %call = tail call fastcc i32 @wibble(i32 poison)
    ret void
  }

  define internal fastcc i32 @wibble(i32 %arg) {
  bb:
    %call = tail call i32 @eggs(i32 noundef ptrtoint (ptr blockaddress(@baz, %bb1) to i32))
    br label %bb1

  bb1:                                              ; preds = %bb
    tail call void @baz.1(i32 noundef ptrtoint (ptr blockaddress(@wibble, %bb1) to i32))
    ret i32 %call
  }

  declare i32 @eggs(i32 noundef) local_unnamed_addr

  declare void @baz.1(i32 noundef) local_unnamed_addr

...
---
name:            baz
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
callsEHReturn:   false
callsUnwindInit: false
hasEHCatchret:   false
hasEHScopes:     false
hasEHFunclets:   false
isOutlined:      false
debugInstrRef:   false
failsVerification: false
tracksDebugUserValues: false
registers:
  - { id: 0, class: intregs, preferred-register: '' }
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    1
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  functionContext: ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     true
  isCalleeSavedInfoValid: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:      []
stack:           []
entry_values:    []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0.bb:
    successors: %bb.1(0x80000000)

  bb.1.bb1 (ir-block-address-taken %ir-block.bb1):
    %0:intregs = IMPLICIT_DEF
    $r0 = COPY %0
    PS_tailcall_i @wibble, hexagoncsr, implicit $r0

...
---
name:            wibble
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
callsEHReturn:   false
callsUnwindInit: false
hasEHCatchret:   false
hasEHScopes:     false
hasEHFunclets:   false
isOutlined:      false
debugInstrRef:   false
failsVerification: false
tracksDebugUserValues: false
registers:
  - { id: 0, class: intregs, preferred-register: '' }
  - { id: 1, class: intregs, preferred-register: '' }
  - { id: 2, class: intregs, preferred-register: '' }
  - { id: 3, class: intregs, preferred-register: '' }
  - { id: 4, class: intregs, preferred-register: '' }
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    1
  adjustsStack:    true
  hasCalls:        true
  stackProtector:  ''
  functionContext: ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  hasTailCall:     false
  isCalleeSavedInfoValid: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:      []
stack:           []
entry_values:    []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0.bb:
    successors: %bb.1(0x80000000)

    %2:intregs = A2_tfrsi blockaddress(@baz, %ir-block.bb1)
    ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit $r31, implicit $r30, implicit $r29
    $r0 = COPY %2
    J2_call @eggs, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit-def $r29, implicit-def $r0
    ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit $r29
    %3:intregs = COPY $r0

  bb.1.bb1 (ir-block-address-taken %ir-block.bb1):
    %4:intregs = A2_tfrsi blockaddress(@wibble, %ir-block.bb1)
    ADJCALLSTACKDOWN 0, 0, implicit-def $r29, implicit-def dead $r30, implicit $r31, implicit $r30, implicit $r29
    $r0 = COPY %4
    J2_call @baz.1, hexagoncsr, implicit-def dead $pc, implicit-def dead $r31, implicit $r29, implicit $r0, implicit-def $r29
    ADJCALLSTACKUP 0, 0, implicit-def dead $r29, implicit-def dead $r30, implicit-def dead $r31, implicit $r29
    $r0 = COPY %3
    PS_jmpret $r31, implicit-def dead $pc, implicit $r0

...