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Remove the old evaluator code. 

llvm-svn: 54615
This commit is contained in:
Anders Carlsson 2008-08-10 17:03:01 +00:00
parent eaf5853004
commit d361a7df78
1 changed files with 2 additions and 40 deletions
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42
clang/lib/AST/ExprConstant.cpp
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@ -21,37 +21,6 @@
using namespace clang;
using llvm::APSInt;
#define USE_NEW_EVALUATOR 1
static bool CalcFakeICEVal(const Expr *Expr,
llvm::APSInt &Result,
ASTContext &Context) {
// Calculate the value of an expression that has a calculatable
// value, but isn't an ICE. Currently, this only supports
// a very narrow set of extensions, but it can be expanded if needed.
if (const ParenExpr *PE = dyn_cast<ParenExpr>(Expr))
return CalcFakeICEVal(PE->getSubExpr(), Result, Context);
if (const CastExpr *CE = dyn_cast<CastExpr>(Expr)) {
QualType CETy = CE->getType();
if ((CETy->isIntegralType() && !CETy->isBooleanType()) ||
CETy->isPointerType()) {
if (CalcFakeICEVal(CE->getSubExpr(), Result, Context)) {
Result.extOrTrunc(Context.getTypeSize(CETy));
// FIXME: This assumes pointers are signed.
Result.setIsSigned(CETy->isSignedIntegerType() ||
CETy->isPointerType());
return true;
}
}
}
if (Expr->getType()->isIntegralType())
return Expr->isIntegerConstantExpr(Result, Context);
return false;
}
/// EvalInfo - This is a private struct used by the evaluator to capture
/// information about a subexpression as it is folded. It retains information
/// about the AST context, but also maintains information about the folded
@ -552,7 +521,7 @@ bool IntExprEvaluator::HandleCast(SourceLocation CastLoc,
bool Expr::tryEvaluate(APValue &Result, ASTContext &Ctx) const {
llvm::APSInt sInt(32);
#if USE_NEW_EVALUATOR
EvalInfo Info(Ctx);
if (getType()->isIntegerType()) {
if (EvaluateInteger(this, sInt, Info)) {
@ -561,13 +530,6 @@ bool Expr::tryEvaluate(APValue &Result, ASTContext &Ctx) const {
}
} else
return false;
#else
if (CalcFakeICEVal(this, sInt, Ctx)) {
Result = APValue(sInt);
return true;
}
#endif
return false;
}