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Author SHA1 Message Date
James Y Knight 8ca33605ff Itanium Mangling: Fix handling of <expr-primary> in <template-arg>. 
Previously, we were emitting an extraneous X .. E in <template-arg>
around an <expr-primary> if the template argument was constructed from
an expression (rather than an already-evaluated literal value).  In
such a case, we would then e.g. emit 'XLi0EE' instead of 'Li0E'.

We had one special-case for DeclRefExpr expressions, in particular, to
omit them the mangled-name without the surrounding X/E. However,
unfortunately, that special case also triggered for ParmVarDecl (a
subtype of VarDecl), and _incorrectly_ emitted 'L_Z .. E' instead of
the proper 'Xfp_E'.

This change causes mangleExpression itself to be responsible for
emitting X/E around non-primary expressions, which removes the
special-case, and corrects both these problems.

Differential Revision: https://reviews.llvm.org/D95487
 2021-01-27 16:46:52 -05:00
Saar Raz 67c608a969 [Concepts] Deprecate -fconcepts-ts, enable Concepts under -std=c++2a 
Now with concepts support merged and mostly complete, we do not need -fconcepts-ts
(which was also misleading as we were not implementing the TS) and can enable
concepts features under C++2a. A warning will be generated if users still attempt
to use -fconcepts-ts.
 2020-01-24 00:48:59 +02:00
Saar Raz f567b00880 [Concepts] ConceptSpecializationExprs mangling 
Implement mangling for CSEs to match regular template-ids.
Reviewed as part of D41569 <https://reviews.llvm.org/D41569>.

Re-commit fixing failing test.

llvm-svn: 375063
 2019-10-17 00:16:01 +00:00
Nico Weber b13d257028 Revert 374967 "[Concepts] ConceptSpecializationExprs mangling" 
This reverts commit 5e34ad109c.

The mangling test fails on Windows:
http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/15944

It also fails on ppc64le:
http://lab.llvm.org:8011/builders/clang-ppc64le-linux-lnt/builds/21092

Also revert follow-up  374971 "Fix failing mangle-concept.cpp test."
(it did not help on Win/ppc64le).

llvm-svn: 374985
 2019-10-16 10:23:53 +00:00
Saar Raz 1e3e77e0b6 Fix failing mangle-concept.cpp test. 
llvm-svn: 374971
 2019-10-16 02:56:40 +00:00
Saar Raz 5e34ad109c [Concepts] ConceptSpecializationExprs mangling 
Implement mangling for CSEs to match regular template-ids.
Reviewed as part of D41569.

llvm-svn: 374967
 2019-10-16 02:33:41 +00:00