# RUN: llc -mtriple="i386-pc-windows-msvc" -run-pass=stack-coloring %s -o - | FileCheck %s
# RUN: llc -mtriple="i386-pc-windows-msvc" -passes=stack-coloring %s -o - | FileCheck %s

# There is a problem with the exception handler, we found in windows, when set
# LifetimeStartOnFirstUse=true for stack-coloring in default. Take the following
# case for example:
#
#// Compile with "clang-cl -m32 -O2 -EHs test.cpp"
#__attribute__((noinline,nothrow,weak)) void escape(int *p) { }
#struct object {
#  int i;
#  object() {
#    i = 1;
#  }
#  ~object() {
#    // if "object" and "exp" are assigned to the same slot,
#    // this assign will corrupt "exp".
#    i = 9999;
#    escape(&i);
#  }
#};
#inline void throwit() { throw 999; }
#
#volatile int v;
#inline void func() {
#  try {
#    object o;
#    throwit();
#  }
#  // "exp" is written by the OS when the "throw" occurs.
#  // Then the destructor is called, and the store-assign
#  // clobbers the value of "exp".
#  // The dereference of "exp" (with value 9999) causes a crash.
#  // All these done in libruntime, so it is hard to check in IR.
#  catch (int &exp) {
#    v = exp;
#  }
#}
#
#int main() {
#  func();
#  return 0;
#}

## Make sure that o.i not merge with exp.i
# CHECK:      stack:
# CHECK:  id: 2, name: o.i, type: default, offset: 0, size: 4, alignment: 4,
# CHECK:  id: 3, name: exp.i, type: default, offset: 0, size: 4, alignment: 4,

## Make sure that %stack.3.exp.i not replaced with %stack.2.o.i
# CHECK:  bb.3.catch.i (landing-pad, ehfunclet-entry):
# CHECK:    %7:gr32 = MOV32rm %stack.3.exp.i, 1, $noreg, 0, $noreg :: (dereferenceable load (s32) from %ir.exp.i)

--- |
  ; ModuleID = 'test-pre-stc.mir'
  source_filename = "test.cpp"
  target datalayout = "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:32-n8:16:32-a:0:32-S32"

  %rtti.TypeDescriptor2 = type { ptr, ptr, [3 x i8] }
  %eh.CatchableType = type { i32, ptr, i32, i32, i32, i32, ptr }
  %eh.CatchableTypeArray.1 = type { i32, [1 x ptr] }
  %eh.ThrowInfo = type { i32, ptr, ptr, ptr }
  %CXXExceptionRegistration = type { ptr, %EHRegistrationNode, i32 }
  %EHRegistrationNode = type { ptr, ptr }
  %struct.object = type { i32 }

  $"_R0H@8" = comdat any

  $"_CT_R0H@84" = comdat any

  $_CTA1H = comdat any

  $_TI1H = comdat any

  @v__3HC = dso_local global i32 0, align 4
  @"_7type_info__6B@" = external constant ptr
  @"_R0H@8" = linkonce_odr global %rtti.TypeDescriptor2 { ptr @"_7type_info__6B@", ptr null, [3 x i8] c".H\00" }, comdat
  @"_CT_R0H@84" = linkonce_odr unnamed_addr constant %eh.CatchableType { i32 1, ptr @"_R0H@8", i32 0, i32 -1, i32 0, i32 4, ptr null }, section ".xdata", comdat
  @_CTA1H = linkonce_odr unnamed_addr constant %eh.CatchableTypeArray.1 { i32 1, [1 x ptr] [ptr @"_CT_R0H@84"] }, section ".xdata", comdat
  @_TI1H = linkonce_odr unnamed_addr constant %eh.ThrowInfo { i32 0, ptr null, ptr null, ptr @_CTA1H }, section ".xdata", comdat

  ; Function Attrs: noinline nounwind sspstrong
  define weak dso_local void @"escape__YAXPAH@Z"(ptr %p) local_unnamed_addr #0 {
  entry:
    ret void
  }

  ; Function Attrs: norecurse sspstrong
  define dso_local i32 @main() local_unnamed_addr #1 personality i32 (...)* @__CxxFrameHandler3 {
  entry:
    %0 = alloca %CXXExceptionRegistration, align 4
    %1 = bitcast ptr %0 to ptr
    call void @llvm.x86.seh.ehregnode(ptr %1)
    %2 = call ptr @llvm.stacksave()
    %3 = getelementptr inbounds %CXXExceptionRegistration, ptr %0, i32 0, i32 0
    store ptr %2, ptr %3, align 4
    %4 = getelementptr inbounds %CXXExceptionRegistration, ptr %0, i32 0, i32 2
    store i32 -1, ptr %4, align 4
    %5 = getelementptr inbounds %CXXExceptionRegistration, ptr %0, i32 0, i32 1
    %6 = getelementptr inbounds %EHRegistrationNode, ptr %5, i32 0, i32 1
    store ptr @"__ehhandler$main", ptr %6, align 4
    %7 = load ptr, ptr addrspace(257) null, align 4
    %8 = getelementptr inbounds %EHRegistrationNode, ptr %5, i32 0, i32 0
    store ptr %7, ptr %8, align 4
    store ptr %5, ptr addrspace(257) null, align 4
    %tmp.i.i = alloca i32, align 4
    %o.i = alloca %struct.object, align 4
    %zx = alloca ptr, align 4
    %exp.i = alloca ptr, align 4
    %9 = bitcast ptr %exp.i to ptr
    call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %9)
    %10 = bitcast ptr %o.i to ptr
    call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %10) #7
    %i.i.i1 = bitcast ptr %o.i to ptr
    store i32 1, ptr %i.i.i1, align 4
    %11 = bitcast ptr %tmp.i.i to ptr
    call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %11)
    store i32 999, ptr %tmp.i.i, align 4
    %12 = getelementptr inbounds %CXXExceptionRegistration, ptr %0, i32 0, i32 2
    store i32 1, ptr %12, align 4
    invoke void @_CxxThrowException(ptr nonnull %11, ptr nonnull @_TI1H) #8
            to label %.noexc.i unwind label %ehcleanup.i

  .noexc.i:                                         ; preds = %entry
    unreachable

  ehcleanup.i:                                      ; preds = %entry
    %13 = cleanuppad within none []
    %14 = bitcast ptr %o.i to ptr
    %15 = bitcast ptr %o.i to ptr
    store i32 9999, ptr %14, align 4
    call void @"escape__YAXPAH@Z"(ptr nonnull %14) #7 [ "funclet"(token %13) ]
    call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %15) #7
    cleanupret from %13 unwind label %catch.dispatch.i

  catch.dispatch.i:                                 ; preds = %ehcleanup.i
    %16 = catchswitch within none [label %catch.i] unwind to caller

  catch.i:                                          ; preds = %catch.dispatch.i
    %17 = catchpad within %16 [ptr @"_R0H@8", i32 8, ptr %exp.i]
    %18 = load ptr, ptr %exp.i, align 4
    %19 = load i32, ptr %18, align 4
    store atomic volatile i32 %19, ptr @v__3HC release, align 4
    catchret from %17 to label %func__YAXXZ.exit

  func__YAXXZ.exit:                                 ; preds = %catch.i
    %20 = bitcast ptr %exp.i to ptr
    call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %20)
    %21 = getelementptr inbounds %CXXExceptionRegistration, ptr %0, i32 0, i32 1
    %22 = getelementptr inbounds %EHRegistrationNode, ptr %21, i32 0, i32 0
    %23 = load ptr, ptr %22, align 4
    store ptr %23, ptr addrspace(257) null, align 4
    ret i32 0
  }

  ; Function Attrs: argmemonly nofree nosync nounwind willreturn
  declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

  ; Function Attrs: nofree
  declare dso_local i32 @__CxxFrameHandler3(...) #3

  ; Function Attrs: argmemonly nofree nosync nounwind willreturn
  declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

  ; Function Attrs: nofree
  declare dso_local x86_stdcallcc void @_CxxThrowException(ptr, ptr) local_unnamed_addr #3

  declare i32 @_setjmp3(ptr, i32, ...)

  ; Function Attrs: nofree nosync nounwind willreturn
  declare ptr @llvm.stacksave() #4

  define internal i32 @"__ehhandler$main"(ptr %0, ptr %1, ptr %2, ptr %3) #5 {
  entry:
    %4 = call ptr @llvm.x86.seh.lsda(ptr @main)
    %5 = tail call i32 @__CxxFrameHandler3(ptr inreg %4, ptr %0, ptr %1, ptr %2, ptr %3)
    ret i32 %5
  }

  ; Function Attrs: nounwind readnone
  declare ptr @llvm.x86.seh.lsda(ptr) #6

  declare x86_stdcallcc void @__CxxLongjmpUnwind(ptr)

  ; Function Attrs: nounwind
  declare void @llvm.x86.seh.ehregnode(ptr) #7

  attributes #0 = { noinline nounwind sspstrong "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
  attributes #1 = { norecurse sspstrong "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="none" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="pentium4" "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" "unsafe-fp-math"="false" "use-soft-float"="false" }
  attributes #2 = { argmemonly nofree nosync nounwind willreturn }
  attributes #3 = { nofree }
  attributes #4 = { nofree nosync nounwind willreturn }
  attributes #5 = { "safeseh" }
  attributes #6 = { nounwind readnone }
  attributes #7 = { nounwind }
  attributes #8 = { noreturn }

  !llvm.linker.options = !{!0, !1, !2}
  !llvm.module.flags = !{!3, !4}
  !llvm.ident = !{!5}

  !0 = !{!"/DEFAULTLIB:libcmt.lib"}
  !1 = !{!"/DEFAULTLIB:libmmt.lib"}
  !2 = !{!"/DEFAULTLIB:oldnames.lib"}
  !3 = !{i32 1, !"NumRegisterParameters", i32 0}
  !4 = !{i32 1, !"wchar_size", i32 2}
  !5 = !{!"Intel(R) oneAPI DPC++ Compiler Pro 2021.1 (YYYY.x.0.MMDD)"}

...
---
name:            'escape__YAXPAH@Z'
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
registers:       []
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:
  - { id: 0, type: default, offset: 0, size: 4, alignment: 4, stack-id: default,
      isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
stack:           []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0.entry:
    RET 0

...
---
name:            main
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
registers:
  - { id: 0, class: gr32, preferred-register: '' }
  - { id: 1, class: gr32, preferred-register: '' }
  - { id: 2, class: gr32, preferred-register: '' }
  - { id: 3, class: gr32, preferred-register: '' }
  - { id: 4, class: gr32, preferred-register: '' }
  - { id: 5, class: gr32, preferred-register: '' }
  - { id: 6, class: gr32, preferred-register: '' }
  - { id: 7, class: gr32, preferred-register: '' }
  - { id: 8, class: gr32, preferred-register: '' }
  - { id: 9, class: gr32, preferred-register: '' }
  - { id: 10, class: gr32, preferred-register: '' }
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        true
  stackProtector:  ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: true
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:      []
stack:
  - { id: 0, name: zx, type: default, offset: 0, size: 16, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
  - { id: 1, name: tmp.i.i, type: default, offset: 0, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
  - { id: 2, name: o.i, type: default, offset: 0, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
  - { id: 3, name: exp.i, type: default, offset: 0, size: 4, alignment: 4,
      stack-id: default, callee-saved-register: '', callee-saved-restored: true,
      debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0.entry:
    successors: %bb.1(0x7ffff800), %bb.2(0x00000800)

    %0:gr32 = COPY $esp
    MOV32mr %stack.0.zx, 1, $noreg, 0, $noreg, %0 :: (store (s32) into %ir.3)
    MOV32mi %stack.0.zx, 1, $noreg, 12, $noreg, -1 :: (store (s32) into %ir.4)
    %1:gr32 = nuw LEA32r %stack.0.zx, 1, $noreg, 4, $noreg
    MOV32mi %stack.0.zx, 1, $noreg, 8, $noreg, @"__ehhandler$main" :: (store (s32) into %ir.6)
    %2:gr32 = MOV32rm $noreg, 1, $noreg, 0, $fs :: (load (s32) from `ptr addrspace(257) null`, addrspace 257)
    MOV32mr %stack.0.zx, 1, $noreg, 4, $noreg, killed %2 :: (store (s32) into %ir.8)
    MOV32mr $noreg, 1, $noreg, 0, $fs, killed %1 :: (store (s32) into `ptr addrspace(257) null`, addrspace 257)
    MOV32mi %stack.2.o.i, 1, $noreg, 0, $noreg, 1 :: (store (s32) into %ir.i.i.i1)
    MOV32mi %stack.1.tmp.i.i, 1, $noreg, 0, $noreg, 999 :: (store (s32) into %ir.tmp.i.i)
    MOV32mi %stack.0.zx, 1, $noreg, 12, $noreg, 1 :: (store (s32) into %ir.12)
    ADJCALLSTACKDOWN32 8, 0, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp
    %3:gr32 = COPY $esp
    %4:gr32 = LEA32r %stack.1.tmp.i.i, 1, $noreg, 0, $noreg
    MOV32mr %3, 1, $noreg, 0, $noreg, killed %4 :: (store (s32) into stack)
    MOV32mi %3, 1, $noreg, 4, $noreg, @_TI1H :: (store (s32) into stack + 4)
    CALLpcrel32 @_CxxThrowException, csr_noregs, implicit $esp, implicit $ssp, implicit-def $esp, implicit-def $ssp
    ADJCALLSTACKUP32 8, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp
    JMP_1 %bb.1

  bb.1..noexc.i:
    successors:


  bb.2.ehcleanup.i (landing-pad, ehfunclet-entry):
    successors: %bb.3(0x80000000)

    MOV32mi %stack.2.o.i, 1, $noreg, 0, $noreg, 9999 :: (store (s32) into %ir.14)
    ADJCALLSTACKDOWN32 4, 0, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp
    %5:gr32 = COPY $esp
    %6:gr32 = LEA32r %stack.2.o.i, 1, $noreg, 0, $noreg
    MOV32mr %5, 1, $noreg, 0, $noreg, killed %6 :: (store (s32) into stack)
    CALLpcrel32 @"escape__YAXPAH@Z", csr_32, implicit $esp, implicit $ssp, implicit-def $esp, implicit-def $ssp
    ADJCALLSTACKUP32 4, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp
    CLEANUPRET

  bb.3.catch.i (landing-pad, ehfunclet-entry):
    successors: %bb.4(0x80000000)

    %7:gr32 = MOV32rm %stack.3.exp.i, 1, $noreg, 0, $noreg :: (dereferenceable load (s32) from %ir.exp.i)
    %8:gr32 = MOV32rm killed %7, 1, $noreg, 0, $noreg :: (load (s32) from %ir.18)
    MOV32mr $noreg, 1, $noreg, @v__3HC, $noreg, killed %8 :: (volatile store release (s32) into @v__3HC)
    CATCHRET %bb.4, %bb.0

  bb.4.catch.i (landing-pad):
    successors: %bb.5(0x80000000)

    JMP_4 %bb.5

  bb.5.func__YAXXZ.exit:
    %9:gr32 = MOV32rm %stack.0.zx, 1, $noreg, 4, $noreg :: (dereferenceable load (s32) from %ir.22)
    MOV32mr $noreg, 1, $noreg, 0, $fs, killed %9 :: (store (s32) into `ptr addrspace(257) null`, addrspace 257)
    %10:gr32 = MOV32r0 implicit-def dead $eflags
    $eax = COPY %10
    RET 0, $eax

...
---
name:            '__ehhandler$main'
alignment:       16
exposesReturnsTwice: false
legalized:       false
regBankSelected: false
selected:        false
failedISel:      false
tracksRegLiveness: true
hasWinCFI:       false
registers:
  - { id: 0, class: gr32, preferred-register: '' }
liveins:         []
frameInfo:
  isFrameAddressTaken: false
  isReturnAddressTaken: false
  hasStackMap:     false
  hasPatchPoint:   false
  stackSize:       0
  offsetAdjustment: 0
  maxAlignment:    4
  adjustsStack:    false
  hasCalls:        false
  stackProtector:  ''
  maxCallFrameSize: 4294967295
  cvBytesOfCalleeSavedRegisters: 0
  hasOpaqueSPAdjustment: false
  hasVAStart:      false
  hasMustTailInVarArgFunc: false
  localFrameSize:  0
  savePoint:       ''
  restorePoint:    ''
fixedStack:
  - { id: 0, type: default, offset: 0, size: 4, alignment: 4, stack-id: default,
      isImmutable: false, isAliased: false, callee-saved-register: '',
      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
      debug-info-location: '' }
  - { id: 1, type: default, offset: 4, size: 4, alignment: 4, stack-id: default,
      isImmutable: false, isAliased: false, callee-saved-register: '',
      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
      debug-info-location: '' }
  - { id: 2, type: default, offset: 8, size: 4, alignment: 4, stack-id: default,
      isImmutable: false, isAliased: false, callee-saved-register: '',
      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
      debug-info-location: '' }
  - { id: 3, type: default, offset: 12, size: 4, alignment: 4, stack-id: default,
      isImmutable: false, isAliased: false, callee-saved-register: '',
      callee-saved-restored: true, debug-info-variable: '', debug-info-expression: '',
      debug-info-location: '' }
stack:           []
callSites:       []
debugValueSubstitutions: []
constants:       []
machineFunctionInfo: {}
body:             |
  bb.0.entry:
    %0:gr32 = MOV32ri <mcsymbol L__ehtable$main>
    $eax = COPY %0
    TCRETURNdi @__CxxFrameHandler3, 0, csr_32, implicit $esp, implicit $ssp, implicit $eax

...