17 Commits

Author SHA1 Message Date
Erich Keane
975740bf8d "Reapply "GH58368: Correct concept checking in a lambda defined in concept""
This reverts commit cecc9a92cfca71c1b6c2a35c5e302ab649496d11.

The problem ended up being how we were handling the lambda-context in
code generation: we were assuming any decl context here would be a
named-decl, but that isn't the case.  Instead, we just replace it with
the concept's owning context.

Differential Revision: https://reviews.llvm.org/D136451
2022-10-24 12:36:54 -07:00
Erich Keane
cecc9a92cf Revert "Reapply "GH58368: Correct concept checking in a lambda defined in concept"""
This reverts commit b876f6e2f28779211a829d7d4e841fe68885ae20.

Still getting build failures on PPC AIX that aren't obvious what is causing
them, so reverting while I try to figure this out.
2022-10-24 12:20:23 -07:00
Erich Keane
b876f6e2f2 Reapply "GH58368: Correct concept checking in a lambda defined in concept""
This reverts commit 52930162870fee52d0d9c07c5d66e5dce32b08e8.

Now with updating the ASTBitcodes to show that this AST is incompatible
from the last.
2022-10-24 11:46:54 -07:00
Erich Keane
5293016287 Revert "GH58368: Correct concept checking in a lambda defined in concept"
This reverts commit b7c922607c5ba93db8b893d4ba461052af8317b5.

This seems to cause some problems with some modules related things,
which makes me think I should have updated the version-major in
ast-bit-codes?  Going to revert to confirm this was a problem, then
change that and re-try a commit.
2022-10-24 10:21:22 -07:00
Erich Keane
b7c922607c GH58368: Correct concept checking in a lambda defined in concept
As that bug reports, the problem here is that the lambda's
'context-decl' was not set to the concept, and the lambda picked up
template arguments from the concept.  SO, we failed to get the correct
template arguments in SemaTemplateInstantiate.

However, a Concept Specialization is NOT a decl, its an expression, so
we weren't able to put the concept in the decl tree like we needed.
This patch introduces a ConceptSpecializationDecl, which is the smallest
type possible to use for this purpose, containing only the template
arguments.

The net memory impliciation of this is turning a
trailing-objects into a pointer to a type with trailing-objects,  so it
should be minor.

As future work, we may consider giving this type more responsibility, or
figuring out how to better merge duplicates, but as this is just a
template-argument collection at the moment, there isn't much value to
it.

Differential Revision: https://reviews.llvm.org/D136451
2022-10-24 06:32:18 -07:00
Kazu Hirata
d677a7cb05 [clang] Remove redundant member initialization (NFC)
Identified with readability-redundant-member-init.
2022-01-02 10:20:23 -08:00
Matheus Izvekov
aef5d8fdc7 [clang] NFC: Rename rvalue to prvalue
This renames the expression value categories from rvalue to prvalue,
keeping nomenclature consistent with C++11 onwards.

C++ has the most complicated taxonomy here, and every other language
only uses a subset of it, so it's less confusing to use the C++ names
consistently, and mentally remap to the C names when working on that
context (prvalue -> rvalue, no xvalues, etc).

Renames:
* VK_RValue -> VK_PRValue
* Expr::isRValue -> Expr::isPRValue
* SK_QualificationConversionRValue -> SK_QualificationConversionPRValue
* JSON AST Dumper Expression nodes value category: "rvalue" -> "prvalue"

Signed-off-by: Matheus Izvekov <mizvekov@gmail.com>

Reviewed By: rsmith

Differential Revision: https://reviews.llvm.org/D103720
2021-06-09 12:27:10 +02:00
Sam McCall
b4f02d89e5 [AST] Make Expr::setDependence protected and remove add/removeDependence. NFC
Summary:
The expected pattern is for subclasses to initialize through
computeDependence, which needs only setDependence.
The few places that still use addDependence can be simulated with get+set.

Reviewers: hokein

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D76392
2020-03-19 21:54:40 +01:00
Haojian Wu
876bb86e26 [AST] Move dependence computations into a separate file
To group the code in one place, simplify it and make it easier to add
the containsErrors bit and find existing bugs.

Reviewers: sammccall

Reviewed By: sammccall

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73638
2020-03-17 09:22:31 +01:00
Haojian Wu
18c9766248 Revert "[AST] Move dependence computations into a separate file"
This reverts commit ddd20ed1586c55947e84620d674a60c118ec6905.
The patch was landed by accident.
2020-03-16 16:49:38 +01:00
Ilya Biryukov
ddd20ed158 [AST] Move dependence computations into a separate file
To group the code in one place, simplify it and make it easier to add
the containsErrors bit and find existing bugs.
2020-03-16 16:48:49 +01:00
Haojian Wu
67d25914b2 [AST] rename DependencyFlags.h => DependenceFlags.h, NFC
We forgot to fix in the previous patch.
2020-03-16 13:54:21 +01:00
Ilya Biryukov
ec3060c72d [AST] Refactor propagation of dependency bits. NFC
Summary:
This changes introduces an enum to represent dependencies as a bitmask
and extract common patterns from code that computes dependency bits into
helper functions.

Reviewers: rsmith, martong, shafik, ilya-biryukov, hokein

Subscribers: hokein, sammccall, Mordante, riccibruno, merge_guards_bot, rnkovacs, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D71920
2020-03-04 11:25:17 +01:00
Saar Raz
c83d9bedc0 [Concept] Fix incorrect check for containsUnexpandedParameterPack in CSE
We previously checked for containsUnexpandedParameterPack in CSEs by observing the property
in the converted arguments of the CSE. This may not work if the argument is an expanded
type-alias that contains a pack-expansion (see added test).

Check the as-written arguments when determining containsUnexpandedParameterPack and isInstantiationDependent.
2020-01-30 20:45:44 +02:00
Saar Raz
a0f50d7316 [Concepts] Requires Expressions
Implement support for C++2a requires-expressions.

Re-commit after compilation failure on some platforms due to alignment issues with PointerIntPair.

Differential Revision: https://reviews.llvm.org/D50360
2020-01-19 00:23:26 +02:00
Saar Raz
baa84d8cde Revert "[Concepts] Requires Expressions"
This reverts commit 027931899763409e2c61a84bdee6057b5e838ffa.

There have been some failing tests on some platforms, reverting while investigating.
2020-01-18 14:58:01 +02:00
Saar Raz
0279318997 [Concepts] Requires Expressions
Implement support for C++2a requires-expressions.

Differential Revision: https://reviews.llvm.org/D50360
2020-01-18 09:15:36 +02:00