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Diffstat (limited to 'clang/lib/AST/Interp/Context.cpp')
-rw-r--r-- | clang/lib/AST/Interp/Context.cpp | 148 |
1 files changed, 0 insertions, 148 deletions
diff --git a/clang/lib/AST/Interp/Context.cpp b/clang/lib/AST/Interp/Context.cpp deleted file mode 100644 index 85d8626c382..00000000000 --- a/clang/lib/AST/Interp/Context.cpp +++ /dev/null @@ -1,148 +0,0 @@ -//===--- Context.cpp - Context for the constexpr VM -------------*- C++ -*-===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// - -#include "Context.h" -#include "ByteCodeExprGen.h" -#include "ByteCodeStmtGen.h" -#include "EvalEmitter.h" -#include "Interp.h" -#include "InterpFrame.h" -#include "InterpStack.h" -#include "ByteCodeEmitter.h" -#include "Program.h" -#include "Type.h" -#include "clang/AST/Expr.h" - -using namespace clang; -using namespace clang::interp; - -Context::Context(ASTContext &Ctx) - : Ctx(Ctx), ForceInterp(getLangOpts().ForceNewConstInterp), - P(new Program(*this)) {} - -Context::~Context() {} - -InterpResult Context::isPotentialConstantExpr(State &Parent, - const FunctionDecl *FD) { - Function *Func = P->getFunction(FD); - if (!Func) { - if (auto R = ByteCodeStmtGen<ByteCodeEmitter>(*this, *P).compileFunc(FD)) { - Func = *R; - } else if (ForceInterp) { - handleAllErrors(R.takeError(), [&Parent](ByteCodeGenError &Err) { - Parent.FFDiag(Err.getLoc(), diag::err_experimental_clang_interp_failed); - }); - return InterpResult::Fail; - } else { - consumeError(R.takeError()); - return InterpResult::Bail; - } - } - - if (!Func->isConstexpr()) - return InterpResult::Fail; - - APValue Dummy; - return Run(Parent, Func, Dummy); -} - -InterpResult Context::evaluateAsRValue(State &Parent, const Expr *E, - APValue &Result) { - ByteCodeExprGen<EvalEmitter> C(*this, *P, Parent, Stk, Result); - return Check(Parent, C.interpretExpr(E)); -} - -InterpResult Context::evaluateAsInitializer(State &Parent, const VarDecl *VD, - APValue &Result) { - ByteCodeExprGen<EvalEmitter> C(*this, *P, Parent, Stk, Result); - return Check(Parent, C.interpretDecl(VD)); -} - -const LangOptions &Context::getLangOpts() const { return Ctx.getLangOpts(); } - -llvm::Optional<PrimType> Context::classify(QualType T) { - if (T->isReferenceType() || T->isPointerType()) { - return PT_Ptr; - } - - if (T->isBooleanType()) - return PT_Bool; - - if (T->isSignedIntegerOrEnumerationType()) { - switch (Ctx.getIntWidth(T)) { - case 64: - return PT_Sint64; - case 32: - return PT_Sint32; - case 16: - return PT_Sint16; - case 8: - return PT_Sint8; - default: - return {}; - } - } - - if (T->isUnsignedIntegerOrEnumerationType()) { - switch (Ctx.getIntWidth(T)) { - case 64: - return PT_Uint64; - case 32: - return PT_Uint32; - case 16: - return PT_Uint16; - case 8: - return PT_Uint8; - default: - return {}; - } - } - - if (T->isNullPtrType()) - return PT_Ptr; - - if (auto *AT = dyn_cast<AtomicType>(T)) - return classify(AT->getValueType()); - - return {}; -} - -unsigned Context::getCharBit() const { - return Ctx.getTargetInfo().getCharWidth(); -} - -InterpResult Context::Run(State &Parent, Function *Func, APValue &Result) { - InterpResult Flag; - { - InterpState State(Parent, *P, Stk, *this); - State.Current = new InterpFrame(State, Func, nullptr, {}, {}); - if (Interpret(State, Result)) { - Flag = InterpResult::Success; - } else { - Flag = InterpResult::Fail; - } - } - - if (Flag != InterpResult::Success) - Stk.clear(); - return Flag; -} - -InterpResult Context::Check(State &Parent, llvm::Expected<bool> &&R) { - if (R) { - return *R ? InterpResult::Success : InterpResult::Fail; - } else if (ForceInterp) { - handleAllErrors(R.takeError(), [&Parent](ByteCodeGenError &Err) { - Parent.FFDiag(Err.getLoc(), diag::err_experimental_clang_interp_failed); - }); - return InterpResult::Fail; - } else { - consumeError(R.takeError()); - return InterpResult::Bail; - } -} |