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Type traits: No need for switch to handle __builtin_types_compatible_p 

__builtin_types_compatible_p() isn't a C++ type trait at all, rather a GNU C
special-case, so it's fine to use BoolTy the default return type for binary
type traits.

This brings BTT in line with other arities that already default to BoolTy.

Cleanup only, no change in behaviour.

llvm-svn: 196646
This commit is contained in:
Alp Toker 2013-12-07 07:20:22 +00:00
parent db47bcc63d
commit 8baeac7bfd
1 changed files with 4 additions and 10 deletions
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14
clang/lib/Sema/SemaExprCXX.cpp
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@ -3938,16 +3938,10 @@ ExprResult Sema::BuildBinaryTypeTrait(BinaryTypeTrait BTT,
if (!LhsT->isDependentType() && !RhsT->isDependentType())
Value = EvaluateBinaryTypeTrait(*this, BTT, LhsT, RhsT, KWLoc);
// Select trait result type.
QualType ResultType;
switch (BTT) {
case BTT_IsBaseOf: ResultType = Context.BoolTy; break;
case BTT_IsConvertible: ResultType = Context.BoolTy; break;
case BTT_IsSame: ResultType = Context.BoolTy; break;
case BTT_TypeCompatible: ResultType = Context.IntTy; break;
case BTT_IsConvertibleTo: ResultType = Context.BoolTy; break;
case BTT_IsTriviallyAssignable: ResultType = Context.BoolTy;
}
QualType ResultType = Context.BoolTy;
// __builtin_types_compatible_p is a GNU C extension, not a C++ type trait.
if (BTT == BTT_TypeCompatible)
ResultType = Context.IntTy;
return Owned(new (Context) BinaryTypeTraitExpr(KWLoc, BTT, LhsTSInfo,
RhsTSInfo, Value, RParen,