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-rw-r--r--clang/lib/AST/ByteCode/Compiler.cpp2
-rw-r--r--clang/lib/AST/ByteCode/Interp.cpp149
-rw-r--r--clang/lib/AST/ByteCode/Interp.h26
-rw-r--r--clang/lib/AST/ByteCode/InterpBuiltin.cpp88
4 files changed, 181 insertions, 84 deletions
diff --git a/clang/lib/AST/ByteCode/Compiler.cpp b/clang/lib/AST/ByteCode/Compiler.cpp
index f4ddbf4..6c08846 100644
--- a/clang/lib/AST/ByteCode/Compiler.cpp
+++ b/clang/lib/AST/ByteCode/Compiler.cpp
@@ -3948,6 +3948,8 @@ bool Compiler<Emitter>::VisitRecoveryExpr(const RecoveryExpr *E) {
template <class Emitter>
bool Compiler<Emitter>::VisitAddrLabelExpr(const AddrLabelExpr *E) {
assert(E->getType()->isVoidPointerType());
+ if (DiscardResult)
+ return true;
return this->emitDummyPtr(E, E);
}
diff --git a/clang/lib/AST/ByteCode/Interp.cpp b/clang/lib/AST/ByteCode/Interp.cpp
index 169a9a2..a2fb0fb 100644
--- a/clang/lib/AST/ByteCode/Interp.cpp
+++ b/clang/lib/AST/ByteCode/Interp.cpp
@@ -832,6 +832,8 @@ bool CheckLoad(InterpState &S, CodePtr OpPC, const Pointer &Ptr,
return false;
if (!CheckVolatile(S, OpPC, Ptr, AK))
return false;
+ if (!Ptr.isConst() && !S.inConstantContext() && isConstexprUnknown(Ptr))
+ return false;
return true;
}
@@ -868,7 +870,8 @@ bool CheckFinalLoad(InterpState &S, CodePtr OpPC, const Pointer &Ptr) {
return true;
}
-bool CheckStore(InterpState &S, CodePtr OpPC, const Pointer &Ptr) {
+bool CheckStore(InterpState &S, CodePtr OpPC, const Pointer &Ptr,
+ bool WillBeActivated) {
if (!Ptr.isBlockPointer() || Ptr.isZero())
return false;
@@ -883,7 +886,7 @@ bool CheckStore(InterpState &S, CodePtr OpPC, const Pointer &Ptr) {
return false;
if (!CheckRange(S, OpPC, Ptr, AK_Assign))
return false;
- if (!CheckActive(S, OpPC, Ptr, AK_Assign))
+ if (!WillBeActivated && !CheckActive(S, OpPC, Ptr, AK_Assign))
return false;
if (!CheckGlobal(S, OpPC, Ptr))
return false;
@@ -930,6 +933,15 @@ static bool CheckCallable(InterpState &S, CodePtr OpPC, const Function *F) {
if (F->isValid() && F->hasBody() && F->isConstexpr())
return true;
+ const FunctionDecl *DiagDecl = F->getDecl();
+ const FunctionDecl *Definition = nullptr;
+ DiagDecl->getBody(Definition);
+
+ if (!Definition && S.checkingPotentialConstantExpression() &&
+ DiagDecl->isConstexpr()) {
+ return false;
+ }
+
// Implicitly constexpr.
if (F->isLambdaStaticInvoker())
return true;
@@ -937,7 +949,7 @@ static bool CheckCallable(InterpState &S, CodePtr OpPC, const Function *F) {
// Bail out if the function declaration itself is invalid. We will
// have produced a relevant diagnostic while parsing it, so just
// note the problematic sub-expression.
- if (F->getDecl()->isInvalidDecl())
+ if (DiagDecl->isInvalidDecl())
return Invalid(S, OpPC);
// Diagnose failed assertions specially.
@@ -955,64 +967,61 @@ static bool CheckCallable(InterpState &S, CodePtr OpPC, const Function *F) {
}
}
- if (S.getLangOpts().CPlusPlus11) {
- const FunctionDecl *DiagDecl = F->getDecl();
-
- // Invalid decls have been diagnosed before.
- if (DiagDecl->isInvalidDecl())
- return false;
+ if (!S.getLangOpts().CPlusPlus11) {
+ S.FFDiag(S.Current->getLocation(OpPC),
+ diag::note_invalid_subexpr_in_const_expr);
+ return false;
+ }
- // If this function is not constexpr because it is an inherited
- // non-constexpr constructor, diagnose that directly.
- const auto *CD = dyn_cast<CXXConstructorDecl>(DiagDecl);
- if (CD && CD->isInheritingConstructor()) {
- const auto *Inherited = CD->getInheritedConstructor().getConstructor();
- if (!Inherited->isConstexpr())
- DiagDecl = CD = Inherited;
- }
+ // Invalid decls have been diagnosed before.
+ if (DiagDecl->isInvalidDecl())
+ return false;
- // Silently reject constructors of invalid classes. The invalid class
- // has been rejected elsewhere before.
- if (CD && CD->getParent()->isInvalidDecl())
- return false;
+ // If this function is not constexpr because it is an inherited
+ // non-constexpr constructor, diagnose that directly.
+ const auto *CD = dyn_cast<CXXConstructorDecl>(DiagDecl);
+ if (CD && CD->isInheritingConstructor()) {
+ const auto *Inherited = CD->getInheritedConstructor().getConstructor();
+ if (!Inherited->isConstexpr())
+ DiagDecl = CD = Inherited;
+ }
- // FIXME: If DiagDecl is an implicitly-declared special member function
- // or an inheriting constructor, we should be much more explicit about why
- // it's not constexpr.
- if (CD && CD->isInheritingConstructor()) {
- S.FFDiag(S.Current->getLocation(OpPC),
- diag::note_constexpr_invalid_inhctor, 1)
- << CD->getInheritedConstructor().getConstructor()->getParent();
- S.Note(DiagDecl->getLocation(), diag::note_declared_at);
- } else {
- // Don't emit anything if the function isn't defined and we're checking
- // for a constant expression. It might be defined at the point we're
- // actually calling it.
- bool IsExtern = DiagDecl->getStorageClass() == SC_Extern;
- bool IsDefined = F->isDefined();
- if (!IsDefined && !IsExtern && DiagDecl->isConstexpr() &&
- S.checkingPotentialConstantExpression())
- return false;
+ // Silently reject constructors of invalid classes. The invalid class
+ // has been rejected elsewhere before.
+ if (CD && CD->getParent()->isInvalidDecl())
+ return false;
- // If the declaration is defined, declared 'constexpr' _and_ has a body,
- // the below diagnostic doesn't add anything useful.
- if (DiagDecl->isDefined() && DiagDecl->isConstexpr() &&
- DiagDecl->hasBody())
- return false;
+ // FIXME: If DiagDecl is an implicitly-declared special member function
+ // or an inheriting constructor, we should be much more explicit about why
+ // it's not constexpr.
+ if (CD && CD->isInheritingConstructor()) {
+ S.FFDiag(S.Current->getLocation(OpPC), diag::note_constexpr_invalid_inhctor,
+ 1)
+ << CD->getInheritedConstructor().getConstructor()->getParent();
+ S.Note(DiagDecl->getLocation(), diag::note_declared_at);
+ } else {
+ // Don't emit anything if the function isn't defined and we're checking
+ // for a constant expression. It might be defined at the point we're
+ // actually calling it.
+ bool IsExtern = DiagDecl->getStorageClass() == SC_Extern;
+ bool IsDefined = F->isDefined();
+ if (!IsDefined && !IsExtern && DiagDecl->isConstexpr() &&
+ S.checkingPotentialConstantExpression())
+ return false;
- S.FFDiag(S.Current->getLocation(OpPC),
- diag::note_constexpr_invalid_function, 1)
- << DiagDecl->isConstexpr() << (bool)CD << DiagDecl;
+ // If the declaration is defined, declared 'constexpr' _and_ has a body,
+ // the below diagnostic doesn't add anything useful.
+ if (DiagDecl->isDefined() && DiagDecl->isConstexpr() && DiagDecl->hasBody())
+ return false;
- if (DiagDecl->getDefinition())
- S.Note(DiagDecl->getDefinition()->getLocation(),
- diag::note_declared_at);
- else
- S.Note(DiagDecl->getLocation(), diag::note_declared_at);
- }
- } else {
S.FFDiag(S.Current->getLocation(OpPC),
- diag::note_invalid_subexpr_in_const_expr);
+ diag::note_constexpr_invalid_function, 1)
+ << DiagDecl->isConstexpr() << (bool)CD << DiagDecl;
+
+ if (DiagDecl->getDefinition())
+ S.Note(DiagDecl->getDefinition()->getLocation(), diag::note_declared_at);
+ else
+ S.Note(DiagDecl->getLocation(), diag::note_declared_at);
}
return false;
@@ -1642,8 +1651,8 @@ static bool GetDynamicDecl(InterpState &S, CodePtr OpPC, Pointer TypePtr,
QualType DynamicType = TypePtr.getType();
if (TypePtr.isStatic() || TypePtr.isConst()) {
- const VarDecl *VD = TypePtr.getDeclDesc()->asVarDecl();
- if (!VD->isConstexpr()) {
+ if (const VarDecl *VD = TypePtr.getDeclDesc()->asVarDecl();
+ VD && !VD->isConstexpr()) {
const Expr *E = S.Current->getExpr(OpPC);
APValue V = TypePtr.toAPValue(S.getASTContext());
QualType TT = S.getASTContext().getLValueReferenceType(DynamicType);
@@ -1674,20 +1683,6 @@ bool CallVirt(InterpState &S, CodePtr OpPC, const Function *Func,
Pointer &ThisPtr = S.Stk.peek<Pointer>(ThisOffset);
const FunctionDecl *Callee = Func->getDecl();
- if (!Func->isFullyCompiled())
- compileFunction(S, Func);
-
- // C++2a [class.abstract]p6:
- // the effect of making a virtual call to a pure virtual function [...] is
- // undefined
- if (Callee->isPureVirtual()) {
- S.FFDiag(S.Current->getSource(OpPC), diag::note_constexpr_pure_virtual_call,
- 1)
- << Callee;
- S.Note(Callee->getLocation(), diag::note_declared_at);
- return false;
- }
-
const CXXRecordDecl *DynamicDecl = nullptr;
if (!GetDynamicDecl(S, OpPC, ThisPtr, DynamicDecl))
return false;
@@ -1697,7 +1692,8 @@ bool CallVirt(InterpState &S, CodePtr OpPC, const Function *Func,
const auto *InitialFunction = cast<CXXMethodDecl>(Callee);
const CXXMethodDecl *Overrider;
- if (StaticDecl != DynamicDecl) {
+ if (StaticDecl != DynamicDecl &&
+ !llvm::is_contained(S.InitializingBlocks, ThisPtr.block())) {
if (!DynamicDecl->isDerivedFrom(StaticDecl))
return false;
Overrider = S.getContext().getOverridingFunction(DynamicDecl, StaticDecl,
@@ -1707,6 +1703,17 @@ bool CallVirt(InterpState &S, CodePtr OpPC, const Function *Func,
Overrider = InitialFunction;
}
+ // C++2a [class.abstract]p6:
+ // the effect of making a virtual call to a pure virtual function [...] is
+ // undefined
+ if (Overrider->isPureVirtual()) {
+ S.FFDiag(S.Current->getSource(OpPC), diag::note_constexpr_pure_virtual_call,
+ 1)
+ << Callee;
+ S.Note(Callee->getLocation(), diag::note_declared_at);
+ return false;
+ }
+
if (Overrider != InitialFunction) {
// DR1872: An instantiated virtual constexpr function can't be called in a
// constant expression (prior to C++20). We can still constant-fold such a
diff --git a/clang/lib/AST/ByteCode/Interp.h b/clang/lib/AST/ByteCode/Interp.h
index 89f6fbe..5ab9c8e 100644
--- a/clang/lib/AST/ByteCode/Interp.h
+++ b/clang/lib/AST/ByteCode/Interp.h
@@ -75,7 +75,8 @@ bool CheckGlobalLoad(InterpState &S, CodePtr OpPC, const Block *B);
bool CheckLocalLoad(InterpState &S, CodePtr OpPC, const Block *B);
/// Checks if a value can be stored in a block.
-bool CheckStore(InterpState &S, CodePtr OpPC, const Pointer &Ptr);
+bool CheckStore(InterpState &S, CodePtr OpPC, const Pointer &Ptr,
+ bool WillBeActivated = false);
/// Checks if a value can be initialized.
bool CheckInit(InterpState &S, CodePtr OpPC, const Pointer &Ptr);
@@ -1977,13 +1978,12 @@ bool StoreActivate(InterpState &S, CodePtr OpPC) {
const T &Value = S.Stk.pop<T>();
const Pointer &Ptr = S.Stk.peek<Pointer>();
+ if (!CheckStore(S, OpPC, Ptr, /*WilLBeActivated=*/true))
+ return false;
if (Ptr.canBeInitialized()) {
Ptr.initialize();
Ptr.activate();
}
-
- if (!CheckStore(S, OpPC, Ptr))
- return false;
Ptr.deref<T>() = Value;
return true;
}
@@ -1993,12 +1993,12 @@ bool StoreActivatePop(InterpState &S, CodePtr OpPC) {
const T &Value = S.Stk.pop<T>();
const Pointer &Ptr = S.Stk.pop<Pointer>();
+ if (!CheckStore(S, OpPC, Ptr, /*WilLBeActivated=*/true))
+ return false;
if (Ptr.canBeInitialized()) {
Ptr.initialize();
Ptr.activate();
}
- if (!CheckStore(S, OpPC, Ptr))
- return false;
Ptr.deref<T>() = Value;
return true;
}
@@ -2007,7 +2007,8 @@ template <PrimType Name, class T = typename PrimConv<Name>::T>
bool StoreBitField(InterpState &S, CodePtr OpPC) {
const T &Value = S.Stk.pop<T>();
const Pointer &Ptr = S.Stk.peek<Pointer>();
- if (!CheckStore(S, OpPC, Ptr))
+
+ if (!CheckStore(S, OpPC, Ptr, /*WilLBeActivated=*/true))
return false;
if (Ptr.canBeInitialized())
Ptr.initialize();
@@ -2037,12 +2038,13 @@ template <PrimType Name, class T = typename PrimConv<Name>::T>
bool StoreBitFieldActivate(InterpState &S, CodePtr OpPC) {
const T &Value = S.Stk.pop<T>();
const Pointer &Ptr = S.Stk.peek<Pointer>();
+
+ if (!CheckStore(S, OpPC, Ptr, /*WilLBeActivated=*/true))
+ return false;
if (Ptr.canBeInitialized()) {
Ptr.initialize();
Ptr.activate();
}
- if (!CheckStore(S, OpPC, Ptr))
- return false;
if (const auto *FD = Ptr.getField())
Ptr.deref<T>() = Value.truncate(FD->getBitWidthValue());
else
@@ -2055,12 +2057,12 @@ bool StoreBitFieldActivatePop(InterpState &S, CodePtr OpPC) {
const T &Value = S.Stk.pop<T>();
const Pointer &Ptr = S.Stk.pop<Pointer>();
+ if (!CheckStore(S, OpPC, Ptr, /*WillBeActivated=*/true))
+ return false;
if (Ptr.canBeInitialized()) {
Ptr.initialize();
Ptr.activate();
}
- if (!CheckStore(S, OpPC, Ptr))
- return false;
if (const auto *FD = Ptr.getField())
Ptr.deref<T>() = Value.truncate(FD->getBitWidthValue());
else
@@ -2281,7 +2283,7 @@ std::optional<Pointer> OffsetHelper(InterpState &S, CodePtr OpPC,
}
}
- if (Invalid && S.getLangOpts().CPlusPlus)
+ if (Invalid && (S.getLangOpts().CPlusPlus || Ptr.inArray()))
return std::nullopt;
// Offset is valid - compute it on unsigned.
diff --git a/clang/lib/AST/ByteCode/InterpBuiltin.cpp b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
index d0b97a1..ab6b3ed 100644
--- a/clang/lib/AST/ByteCode/InterpBuiltin.cpp
+++ b/clang/lib/AST/ByteCode/InterpBuiltin.cpp
@@ -749,7 +749,7 @@ static bool interp__builtin_overflowop(InterpState &S, CodePtr OpPC,
const CallExpr *Call,
unsigned BuiltinOp) {
const Pointer &ResultPtr = S.Stk.pop<Pointer>();
- if (ResultPtr.isDummy())
+ if (ResultPtr.isDummy() || !ResultPtr.isBlockPointer())
return false;
PrimType RHST = *S.getContext().classify(Call->getArg(1)->getType());
@@ -1941,6 +1941,9 @@ static bool interp__builtin_memcmp(InterpState &S, CodePtr OpPC,
return true;
}
+ if (!PtrA.isBlockPointer() || !PtrB.isBlockPointer())
+ return false;
+
bool IsWide =
(ID == Builtin::BIwmemcmp || ID == Builtin::BI__builtin_wmemcmp);
@@ -3293,6 +3296,60 @@ static bool interp__builtin_vec_set(InterpState &S, CodePtr OpPC,
return true;
}
+static bool evalICmpImm(uint8_t Imm, const APSInt &A, const APSInt &B,
+ bool IsUnsigned) {
+ switch (Imm & 0x7) {
+ case 0x00: // _MM_CMPINT_EQ
+ return (A == B);
+ case 0x01: // _MM_CMPINT_LT
+ return IsUnsigned ? A.ult(B) : A.slt(B);
+ case 0x02: // _MM_CMPINT_LE
+ return IsUnsigned ? A.ule(B) : A.sle(B);
+ case 0x03: // _MM_CMPINT_FALSE
+ return false;
+ case 0x04: // _MM_CMPINT_NE
+ return (A != B);
+ case 0x05: // _MM_CMPINT_NLT
+ return IsUnsigned ? A.ugt(B) : A.sgt(B);
+ case 0x06: // _MM_CMPINT_NLE
+ return IsUnsigned ? A.uge(B) : A.sge(B);
+ case 0x07: // _MM_CMPINT_TRUE
+ return true;
+ default:
+ llvm_unreachable("Invalid Op");
+ }
+}
+
+static bool interp__builtin_ia32_cmp_mask(InterpState &S, CodePtr OpPC,
+ const CallExpr *Call, unsigned ID,
+ bool IsUnsigned) {
+ assert(Call->getNumArgs() == 4);
+
+ APSInt Mask = popToAPSInt(S, Call->getArg(3));
+ APSInt Opcode = popToAPSInt(S, Call->getArg(2));
+ unsigned CmpOp = static_cast<unsigned>(Opcode.getZExtValue());
+ const Pointer &RHS = S.Stk.pop<Pointer>();
+ const Pointer &LHS = S.Stk.pop<Pointer>();
+
+ assert(LHS.getNumElems() == RHS.getNumElems());
+
+ APInt RetMask = APInt::getZero(LHS.getNumElems());
+ unsigned VectorLen = LHS.getNumElems();
+ PrimType ElemT = LHS.getFieldDesc()->getPrimType();
+
+ for (unsigned ElemNum = 0; ElemNum < VectorLen; ++ElemNum) {
+ APSInt A, B;
+ INT_TYPE_SWITCH_NO_BOOL(ElemT, {
+ A = LHS.elem<T>(ElemNum).toAPSInt();
+ B = RHS.elem<T>(ElemNum).toAPSInt();
+ });
+ RetMask.setBitVal(ElemNum,
+ Mask[ElemNum] && evalICmpImm(CmpOp, A, B, IsUnsigned));
+ }
+ pushInteger(S, RetMask, Call->getType());
+ return true;
+}
+
static bool interp__builtin_ia32_vpconflict(InterpState &S, CodePtr OpPC,
const CallExpr *Call) {
assert(Call->getNumArgs() == 1);
@@ -4485,6 +4542,35 @@ bool InterpretBuiltin(InterpState &S, CodePtr OpPC, const CallExpr *Call,
case X86::BI__builtin_ia32_vec_set_v4di:
return interp__builtin_vec_set(S, OpPC, Call, BuiltinID);
+ case X86::BI__builtin_ia32_cmpb128_mask:
+ case X86::BI__builtin_ia32_cmpw128_mask:
+ case X86::BI__builtin_ia32_cmpd128_mask:
+ case X86::BI__builtin_ia32_cmpq128_mask:
+ case X86::BI__builtin_ia32_cmpb256_mask:
+ case X86::BI__builtin_ia32_cmpw256_mask:
+ case X86::BI__builtin_ia32_cmpd256_mask:
+ case X86::BI__builtin_ia32_cmpq256_mask:
+ case X86::BI__builtin_ia32_cmpb512_mask:
+ case X86::BI__builtin_ia32_cmpw512_mask:
+ case X86::BI__builtin_ia32_cmpd512_mask:
+ case X86::BI__builtin_ia32_cmpq512_mask:
+ return interp__builtin_ia32_cmp_mask(S, OpPC, Call, BuiltinID,
+ /*IsUnsigned=*/false);
+
+ case X86::BI__builtin_ia32_ucmpb128_mask:
+ case X86::BI__builtin_ia32_ucmpw128_mask:
+ case X86::BI__builtin_ia32_ucmpd128_mask:
+ case X86::BI__builtin_ia32_ucmpq128_mask:
+ case X86::BI__builtin_ia32_ucmpb256_mask:
+ case X86::BI__builtin_ia32_ucmpw256_mask:
+ case X86::BI__builtin_ia32_ucmpd256_mask:
+ case X86::BI__builtin_ia32_ucmpq256_mask:
+ case X86::BI__builtin_ia32_ucmpb512_mask:
+ case X86::BI__builtin_ia32_ucmpw512_mask:
+ case X86::BI__builtin_ia32_ucmpd512_mask:
+ case X86::BI__builtin_ia32_ucmpq512_mask:
+ return interp__builtin_ia32_cmp_mask(S, OpPC, Call, BuiltinID,
+ /*IsUnsigned=*/true);
case X86::BI__builtin_ia32_pslldqi128_byteshift:
case X86::BI__builtin_ia32_pslldqi256_byteshift:
case X86::BI__builtin_ia32_pslldqi512_byteshift:
generated by cgit v1.1 at 2025-10-28 18:10:28 +0000