[C++20] add Basic consteval specifier
Summary:
this revision adds Lexing, Parsing and Basic Semantic for the consteval specifier as specified by http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1073r3.html
with this patch, the consteval specifier is treated as constexpr but can only be applied to function declaration.
Changes:
- add the consteval keyword.
- add parsing of consteval specifier for normal declarations and lambdas expressions.
- add the whether a declaration is constexpr is now represented by and enum everywhere except for variable because they can't be consteval.
- adapt diagnostic about constexpr to print constexpr or consteval depending on the case.
- add tests for basic semantic.
Reviewers: rsmith, martong, shafik
Reviewed By: rsmith
Subscribers: eraman, efriedma, rnkovacs, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D61790
llvm-svn: 363362
diff --git a/clang/lib/Sema/SemaDeclAttr.cpp b/clang/lib/Sema/SemaDeclAttr.cpp
index 932cb18..c32653c 100644
--- a/clang/lib/Sema/SemaDeclAttr.cpp
+++ b/clang/lib/Sema/SemaDeclAttr.cpp
@@ -7460,12 +7460,10 @@
// FIXME: Mangling?
// FIXME: Is the qualifier info correct?
// FIXME: Is the DeclContext correct?
- NewFD = FunctionDecl::Create(FD->getASTContext(), FD->getDeclContext(),
- Loc, Loc, DeclarationName(II),
- FD->getType(), FD->getTypeSourceInfo(),
- SC_None, false/*isInlineSpecified*/,
- FD->hasPrototype(),
- false/*isConstexprSpecified*/);
+ NewFD = FunctionDecl::Create(
+ FD->getASTContext(), FD->getDeclContext(), Loc, Loc,
+ DeclarationName(II), FD->getType(), FD->getTypeSourceInfo(), SC_None,
+ false /*isInlineSpecified*/, FD->hasPrototype(), CSK_unspecified);
NewD = NewFD;
if (FD->getQualifier())