diff options
Diffstat (limited to 'clang/lib/AST/ExprConstant.cpp')
| -rw-r--r-- | clang/lib/AST/ExprConstant.cpp | 338 |
1 files changed, 330 insertions, 8 deletions
diff --git a/clang/lib/AST/ExprConstant.cpp b/clang/lib/AST/ExprConstant.cpp index 35a866e..a07eb22 100644 --- a/clang/lib/AST/ExprConstant.cpp +++ b/clang/lib/AST/ExprConstant.cpp @@ -990,7 +990,7 @@ namespace { // of arrays to avoid exhausting the system resources, as initialization // of each element is likely to take some number of steps anyway. uint64_t Limit = Ctx.getLangOpts().ConstexprStepLimit; - if (ElemCount > Limit) { + if (Limit != 0 && ElemCount > Limit) { if (Diag) FFDiag(Loc, diag::note_constexpr_new_exceeds_limits) << ElemCount << Limit; @@ -1016,6 +1016,9 @@ namespace { } bool nextStep(const Stmt *S) { + if (Ctx.getLangOpts().ConstexprStepLimit == 0) + return true; + if (!StepsLeft) { FFDiag(S->getBeginLoc(), diag::note_constexpr_step_limit_exceeded); return false; @@ -1186,7 +1189,8 @@ namespace { /// Should we continue evaluation as much as possible after encountering a /// construct which can't be reduced to a value? bool keepEvaluatingAfterFailure() const override { - if (!StepsLeft) + uint64_t Limit = Ctx.getLangOpts().ConstexprStepLimit; + if (Limit != 0 && !StepsLeft) return false; switch (EvalMode) { @@ -4070,8 +4074,7 @@ findSubobject(EvalInfo &Info, const Expr *E, const CompleteObject &Obj, } // Next subobject is a class, struct or union field. - RecordDecl *RD = - ObjType->castAsCanonical<RecordType>()->getOriginalDecl(); + RecordDecl *RD = ObjType->castAsCanonical<RecordType>()->getDecl(); if (RD->isUnion()) { const FieldDecl *UnionField = O->getUnionField(); if (!UnionField || @@ -7806,7 +7809,7 @@ class BufferToAPValueConverter { std::optional<APValue> visit(const EnumType *Ty, CharUnits Offset) { QualType RepresentationType = - Ty->getOriginalDecl()->getDefinitionOrSelf()->getIntegerType(); + Ty->getDecl()->getDefinitionOrSelf()->getIntegerType(); assert(!RepresentationType.isNull() && "enum forward decl should be caught by Sema"); const auto *AsBuiltin = @@ -8603,7 +8606,7 @@ public: const FieldDecl *FD = dyn_cast<FieldDecl>(E->getMemberDecl()); if (!FD) return Error(E); assert(!FD->getType()->isReferenceType() && "prvalue reference?"); - assert(BaseTy->castAsCanonical<RecordType>()->getOriginalDecl() == + assert(BaseTy->castAsCanonical<RecordType>()->getDecl() == FD->getParent()->getCanonicalDecl() && "record / field mismatch"); @@ -8832,7 +8835,7 @@ public: const ValueDecl *MD = E->getMemberDecl(); if (const FieldDecl *FD = dyn_cast<FieldDecl>(E->getMemberDecl())) { - assert(BaseTy->castAsCanonical<RecordType>()->getOriginalDecl() == + assert(BaseTy->castAsCanonical<RecordType>()->getDecl() == FD->getParent()->getCanonicalDecl() && "record / field mismatch"); (void)BaseTy; @@ -11615,6 +11618,44 @@ static bool evalPackBuiltin(const CallExpr *E, EvalInfo &Info, APValue &Result, return true; } +static bool evalPshufbBuiltin(EvalInfo &Info, const CallExpr *Call, + APValue &Out) { + APValue SrcVec, ControlVec; + if (!EvaluateAsRValue(Info, Call->getArg(0), SrcVec)) + return false; + if (!EvaluateAsRValue(Info, Call->getArg(1), ControlVec)) + return false; + + const auto *VT = Call->getType()->getAs<VectorType>(); + if (!VT) + return false; + + QualType ElemT = VT->getElementType(); + unsigned NumElts = VT->getNumElements(); + + SmallVector<APValue, 64> ResultElements; + ResultElements.reserve(NumElts); + + for (unsigned Idx = 0; Idx != NumElts; ++Idx) { + APValue CtlVal = ControlVec.getVectorElt(Idx); + APSInt CtlByte = CtlVal.getInt(); + uint8_t Ctl = static_cast<uint8_t>(CtlByte.getZExtValue()); + + if (Ctl & 0x80) { + APValue Zero(Info.Ctx.MakeIntValue(0, ElemT)); + ResultElements.push_back(Zero); + } else { + unsigned LaneBase = (Idx / 16) * 16; + unsigned SrcOffset = Ctl & 0x0F; + unsigned SrcIdx = LaneBase + SrcOffset; + + ResultElements.push_back(SrcVec.getVectorElt(SrcIdx)); + } + } + Out = APValue(ResultElements.data(), ResultElements.size()); + return true; +} + static bool evalPshufBuiltin(EvalInfo &Info, const CallExpr *Call, bool IsShufHW, APValue &Out) { APValue Vec; @@ -11970,6 +12011,54 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) { return Success(APValue(ResultElements.data(), ResultElements.size()), E); } + + case X86::BI__builtin_ia32_vpmadd52luq128: + case X86::BI__builtin_ia32_vpmadd52luq256: + case X86::BI__builtin_ia32_vpmadd52luq512: { + APValue A, B, C; + if (!EvaluateAsRValue(Info, E->getArg(0), A) || + !EvaluateAsRValue(Info, E->getArg(1), B) || + !EvaluateAsRValue(Info, E->getArg(2), C)) + return false; + + unsigned ALen = A.getVectorLength(); + SmallVector<APValue, 4> ResultElements; + ResultElements.reserve(ALen); + + for (unsigned EltNum = 0; EltNum < ALen; EltNum += 1) { + APInt AElt = A.getVectorElt(EltNum).getInt(); + APInt BElt = B.getVectorElt(EltNum).getInt().trunc(52); + APInt CElt = C.getVectorElt(EltNum).getInt().trunc(52); + APSInt ResElt(AElt + (BElt * CElt).zext(64), false); + ResultElements.push_back(APValue(ResElt)); + } + + return Success(APValue(ResultElements.data(), ResultElements.size()), E); + } + case X86::BI__builtin_ia32_vpmadd52huq128: + case X86::BI__builtin_ia32_vpmadd52huq256: + case X86::BI__builtin_ia32_vpmadd52huq512: { + APValue A, B, C; + if (!EvaluateAsRValue(Info, E->getArg(0), A) || + !EvaluateAsRValue(Info, E->getArg(1), B) || + !EvaluateAsRValue(Info, E->getArg(2), C)) + return false; + + unsigned ALen = A.getVectorLength(); + SmallVector<APValue, 4> ResultElements; + ResultElements.reserve(ALen); + + for (unsigned EltNum = 0; EltNum < ALen; EltNum += 1) { + APInt AElt = A.getVectorElt(EltNum).getInt(); + APInt BElt = B.getVectorElt(EltNum).getInt().trunc(52); + APInt CElt = C.getVectorElt(EltNum).getInt().trunc(52); + APSInt ResElt(AElt + llvm::APIntOps::mulhu(BElt, CElt).zext(64), false); + ResultElements.push_back(APValue(ResElt)); + } + + return Success(APValue(ResultElements.data(), ResultElements.size()), E); + } + case clang::X86::BI__builtin_ia32_vprotbi: case clang::X86::BI__builtin_ia32_vprotdi: case clang::X86::BI__builtin_ia32_vprotqi: @@ -12189,6 +12278,15 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) { return Success(APValue(ResultElements.data(), ResultElements.size()), E); } + case X86::BI__builtin_ia32_pshufb128: + case X86::BI__builtin_ia32_pshufb256: + case X86::BI__builtin_ia32_pshufb512: { + APValue R; + if (!evalPshufbBuiltin(Info, E, R)) + return false; + return Success(R, E); + } + case X86::BI__builtin_ia32_pshuflw: case X86::BI__builtin_ia32_pshuflw256: case X86::BI__builtin_ia32_pshuflw512: { @@ -12377,6 +12475,169 @@ bool VectorExprEvaluator::VisitCallExpr(const CallExpr *E) { return Success(APValue(ResultElements.data(), ResultElements.size()), E); } + case clang::X86::BI__builtin_ia32_phaddw128: + case clang::X86::BI__builtin_ia32_phaddw256: + case clang::X86::BI__builtin_ia32_phaddd128: + case clang::X86::BI__builtin_ia32_phaddd256: + case clang::X86::BI__builtin_ia32_phaddsw128: + case clang::X86::BI__builtin_ia32_phaddsw256: + + case clang::X86::BI__builtin_ia32_phsubw128: + case clang::X86::BI__builtin_ia32_phsubw256: + case clang::X86::BI__builtin_ia32_phsubd128: + case clang::X86::BI__builtin_ia32_phsubd256: + case clang::X86::BI__builtin_ia32_phsubsw128: + case clang::X86::BI__builtin_ia32_phsubsw256: { + APValue SourceLHS, SourceRHS; + if (!EvaluateAsRValue(Info, E->getArg(0), SourceLHS) || + !EvaluateAsRValue(Info, E->getArg(1), SourceRHS)) + return false; + QualType DestEltTy = E->getType()->castAs<VectorType>()->getElementType(); + bool DestUnsigned = DestEltTy->isUnsignedIntegerOrEnumerationType(); + + unsigned NumElts = SourceLHS.getVectorLength(); + unsigned EltBits = Info.Ctx.getIntWidth(DestEltTy); + unsigned EltsPerLane = 128 / EltBits; + SmallVector<APValue, 4> ResultElements; + ResultElements.reserve(NumElts); + + for (unsigned LaneStart = 0; LaneStart != NumElts; + LaneStart += EltsPerLane) { + for (unsigned I = 0; I != EltsPerLane; I += 2) { + APSInt LHSA = SourceLHS.getVectorElt(LaneStart + I).getInt(); + APSInt LHSB = SourceLHS.getVectorElt(LaneStart + I + 1).getInt(); + switch (E->getBuiltinCallee()) { + case clang::X86::BI__builtin_ia32_phaddw128: + case clang::X86::BI__builtin_ia32_phaddw256: + case clang::X86::BI__builtin_ia32_phaddd128: + case clang::X86::BI__builtin_ia32_phaddd256: { + APSInt Res(LHSA + LHSB, DestUnsigned); + ResultElements.push_back(APValue(Res)); + break; + } + case clang::X86::BI__builtin_ia32_phaddsw128: + case clang::X86::BI__builtin_ia32_phaddsw256: { + APSInt Res(LHSA.sadd_sat(LHSB)); + ResultElements.push_back(APValue(Res)); + break; + } + case clang::X86::BI__builtin_ia32_phsubw128: + case clang::X86::BI__builtin_ia32_phsubw256: + case clang::X86::BI__builtin_ia32_phsubd128: + case clang::X86::BI__builtin_ia32_phsubd256: { + APSInt Res(LHSA - LHSB, DestUnsigned); + ResultElements.push_back(APValue(Res)); + break; + } + case clang::X86::BI__builtin_ia32_phsubsw128: + case clang::X86::BI__builtin_ia32_phsubsw256: { + APSInt Res(LHSA.ssub_sat(LHSB)); + ResultElements.push_back(APValue(Res)); + break; + } + } + } + for (unsigned I = 0; I != EltsPerLane; I += 2) { + APSInt RHSA = SourceRHS.getVectorElt(LaneStart + I).getInt(); + APSInt RHSB = SourceRHS.getVectorElt(LaneStart + I + 1).getInt(); + switch (E->getBuiltinCallee()) { + case clang::X86::BI__builtin_ia32_phaddw128: + case clang::X86::BI__builtin_ia32_phaddw256: + case clang::X86::BI__builtin_ia32_phaddd128: + case clang::X86::BI__builtin_ia32_phaddd256: { + APSInt Res(RHSA + RHSB, DestUnsigned); + ResultElements.push_back(APValue(Res)); + break; + } + case clang::X86::BI__builtin_ia32_phaddsw128: + case clang::X86::BI__builtin_ia32_phaddsw256: { + APSInt Res(RHSA.sadd_sat(RHSB)); + ResultElements.push_back(APValue(Res)); + break; + } + case clang::X86::BI__builtin_ia32_phsubw128: + case clang::X86::BI__builtin_ia32_phsubw256: + case clang::X86::BI__builtin_ia32_phsubd128: + case clang::X86::BI__builtin_ia32_phsubd256: { + APSInt Res(RHSA - RHSB, DestUnsigned); + ResultElements.push_back(APValue(Res)); + break; + } + case clang::X86::BI__builtin_ia32_phsubsw128: + case clang::X86::BI__builtin_ia32_phsubsw256: { + APSInt Res(RHSA.ssub_sat(RHSB)); + ResultElements.push_back(APValue(Res)); + break; + } + } + } + } + return Success(APValue(ResultElements.data(), ResultElements.size()), E); + } + case clang::X86::BI__builtin_ia32_haddpd: + case clang::X86::BI__builtin_ia32_haddps: + case clang::X86::BI__builtin_ia32_haddps256: + case clang::X86::BI__builtin_ia32_haddpd256: + case clang::X86::BI__builtin_ia32_hsubpd: + case clang::X86::BI__builtin_ia32_hsubps: + case clang::X86::BI__builtin_ia32_hsubps256: + case clang::X86::BI__builtin_ia32_hsubpd256: { + APValue SourceLHS, SourceRHS; + if (!EvaluateAsRValue(Info, E->getArg(0), SourceLHS) || + !EvaluateAsRValue(Info, E->getArg(1), SourceRHS)) + return false; + unsigned NumElts = SourceLHS.getVectorLength(); + SmallVector<APValue, 4> ResultElements; + ResultElements.reserve(NumElts); + llvm::RoundingMode RM = getActiveRoundingMode(getEvalInfo(), E); + QualType DestEltTy = E->getType()->castAs<VectorType>()->getElementType(); + unsigned EltBits = Info.Ctx.getTypeSize(DestEltTy); + unsigned NumLanes = NumElts * EltBits / 128; + unsigned NumElemsPerLane = NumElts / NumLanes; + unsigned HalfElemsPerLane = NumElemsPerLane / 2; + + for (unsigned L = 0; L != NumElts; L += NumElemsPerLane) { + for (unsigned I = 0; I != HalfElemsPerLane; ++I) { + APFloat LHSA = SourceLHS.getVectorElt(L + (2 * I) + 0).getFloat(); + APFloat LHSB = SourceLHS.getVectorElt(L + (2 * I) + 1).getFloat(); + switch (E->getBuiltinCallee()) { + case clang::X86::BI__builtin_ia32_haddpd: + case clang::X86::BI__builtin_ia32_haddps: + case clang::X86::BI__builtin_ia32_haddps256: + case clang::X86::BI__builtin_ia32_haddpd256: + LHSA.add(LHSB, RM); + break; + case clang::X86::BI__builtin_ia32_hsubpd: + case clang::X86::BI__builtin_ia32_hsubps: + case clang::X86::BI__builtin_ia32_hsubps256: + case clang::X86::BI__builtin_ia32_hsubpd256: + LHSA.subtract(LHSB, RM); + break; + } + ResultElements.push_back(APValue(LHSA)); + } + for (unsigned I = 0; I != HalfElemsPerLane; ++I) { + APFloat RHSA = SourceRHS.getVectorElt(L + (2 * I) + 0).getFloat(); + APFloat RHSB = SourceRHS.getVectorElt(L + (2 * I) + 1).getFloat(); + switch (E->getBuiltinCallee()) { + case clang::X86::BI__builtin_ia32_haddpd: + case clang::X86::BI__builtin_ia32_haddps: + case clang::X86::BI__builtin_ia32_haddps256: + case clang::X86::BI__builtin_ia32_haddpd256: + RHSA.add(RHSB, RM); + break; + case clang::X86::BI__builtin_ia32_hsubpd: + case clang::X86::BI__builtin_ia32_hsubps: + case clang::X86::BI__builtin_ia32_hsubps256: + case clang::X86::BI__builtin_ia32_hsubpd256: + RHSA.subtract(RHSB, RM); + break; + } + ResultElements.push_back(APValue(RHSA)); + } + } + return Success(APValue(ResultElements.data(), ResultElements.size()), E); + } case Builtin::BI__builtin_elementwise_fshl: case Builtin::BI__builtin_elementwise_fshr: { APValue SourceHi, SourceLo, SourceShift; @@ -13905,6 +14166,40 @@ static bool getBuiltinAlignArguments(const CallExpr *E, EvalInfo &Info, bool IntExprEvaluator::VisitBuiltinCallExpr(const CallExpr *E, unsigned BuiltinOp) { + auto EvalTestOp = [&](llvm::function_ref<bool(const APInt &, const APInt &)> + Fn) { + APValue SourceLHS, SourceRHS; + if (!EvaluateAsRValue(Info, E->getArg(0), SourceLHS) || + !EvaluateAsRValue(Info, E->getArg(1), SourceRHS)) + return false; + + unsigned SourceLen = SourceLHS.getVectorLength(); + const VectorType *VT = E->getArg(0)->getType()->castAs<VectorType>(); + QualType ElemQT = VT->getElementType(); + unsigned LaneWidth = Info.Ctx.getTypeSize(ElemQT); + + APInt AWide(LaneWidth * SourceLen, 0); + APInt BWide(LaneWidth * SourceLen, 0); + + for (unsigned I = 0; I != SourceLen; ++I) { + APInt ALane; + APInt BLane; + if (ElemQT->isIntegerType()) { // Get value. + ALane = SourceLHS.getVectorElt(I).getInt(); + BLane = SourceRHS.getVectorElt(I).getInt(); + } else if (ElemQT->isFloatingType()) { // Get only sign bit. + ALane = + SourceLHS.getVectorElt(I).getFloat().bitcastToAPInt().isNegative(); + BLane = + SourceRHS.getVectorElt(I).getFloat().bitcastToAPInt().isNegative(); + } else { // Must be integer or floating type. + return false; + } + AWide.insertBits(ALane, I * LaneWidth); + BWide.insertBits(BLane, I * LaneWidth); + } + return Success(Fn(AWide, BWide), E); + }; auto HandleMaskBinOp = [&](llvm::function_ref<APSInt(const APSInt &, const APSInt &)> Fn) @@ -15018,7 +15313,34 @@ bool IntExprEvaluator::VisitBuiltinCallExpr(const CallExpr *E, Result.setBitVal(P++, Val[I]); return Success(Result, E); } - + case X86::BI__builtin_ia32_ptestz128: + case X86::BI__builtin_ia32_ptestz256: + case X86::BI__builtin_ia32_vtestzps: + case X86::BI__builtin_ia32_vtestzps256: + case X86::BI__builtin_ia32_vtestzpd: + case X86::BI__builtin_ia32_vtestzpd256: { + return EvalTestOp( + [](const APInt &A, const APInt &B) { return (A & B) == 0; }); + } + case X86::BI__builtin_ia32_ptestc128: + case X86::BI__builtin_ia32_ptestc256: + case X86::BI__builtin_ia32_vtestcps: + case X86::BI__builtin_ia32_vtestcps256: + case X86::BI__builtin_ia32_vtestcpd: + case X86::BI__builtin_ia32_vtestcpd256: { + return EvalTestOp( + [](const APInt &A, const APInt &B) { return (~A & B) == 0; }); + } + case X86::BI__builtin_ia32_ptestnzc128: + case X86::BI__builtin_ia32_ptestnzc256: + case X86::BI__builtin_ia32_vtestnzcps: + case X86::BI__builtin_ia32_vtestnzcps256: + case X86::BI__builtin_ia32_vtestnzcpd: + case X86::BI__builtin_ia32_vtestnzcpd256: { + return EvalTestOp([](const APInt &A, const APInt &B) { + return ((A & B) != 0) && ((~A & B) != 0); + }); + } case X86::BI__builtin_ia32_kandqi: case X86::BI__builtin_ia32_kandhi: case X86::BI__builtin_ia32_kandsi: |