[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/Parse/ParseCXXInlineMethods.cpp b/clang/lib/Parse/ParseCXXInlineMethods.cpp
index f2e552a..14151ef 100644
--- a/clang/lib/Parse/ParseCXXInlineMethods.cpp
+++ b/clang/lib/Parse/ParseCXXInlineMethods.cpp
@@ -109,7 +109,7 @@
// the tokens and store them for parsing at the end of the translation unit.
if (getLangOpts().DelayedTemplateParsing &&
D.getFunctionDefinitionKind() == FDK_Definition &&
- !D.getDeclSpec().isConstexprSpecified() &&
+ !D.getDeclSpec().hasConstexprSpecifier() &&
!(FnD && FnD->getAsFunction() &&
FnD->getAsFunction()->getReturnType()->getContainedAutoType()) &&
((Actions.CurContext->isDependentContext() ||