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support substitution into SubstNonTypeTemplateParmExpr
We previously would not correctly for the initial parameter mapping for variadic template parameters in Concepts.
Testing this lead to the discovery that with the normalization process we would need to substitute into already-substituted-into
template arguments, which means we need to add NonTypeTemplateParmExpr support to TemplateInstantiator.
We do that by substituting into the replacement and the type separately, and then re-checking the expression against the NTTP
with the new type, in order to form any new required implicit casts (for cases where the type of the NTTP was dependent).
(cherry picked from commit ba1f3db4b0729ad932aa4f091e9578132d98a0c8)
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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.
(cherry picked from commit 67c608a9695496cfc9d3fdf9d0b12b554ac6b4df)
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Added support for constraint satisfaction checking and partial ordering of constraints in constrained partial specialization and function template overloads.
Re-commit after fixing another crash (added regression test).
Differential Revision: https://reviews.llvm.org/D41910
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This reverts commit d3f5769d5e93b30d4a8b4696381d5e4a304992fa.
Causes crashes on Chromium. Have reproducer, will reduce and send along.
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Added support for constraint satisfaction checking and partial ordering of constraints in constrained partial specialization and function template overloads.
Re-commit after fixing some crashes and warnings.
Differential Revision: https://reviews.llvm.org/D41910
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These changes caused LibcxxVariantDataFormatterTestCase in lldb to fail
with an assert:
Assertion failed: (Idx < size() && "Out-of-bounds Bit access."),
function operator[], file
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/ADT/SmallBitVector.h,
line 452.
In:
7 clang-10 0x00000001094b79d9 isAtLeastAsSpecializedAs(clang::Sema&, clang::SourceLocation, clang::FunctionTemplateDecl*, clang::FunctionTemplateDecl*, clang::TemplatePartialOrderingContext, unsigned int) + 1865
8 clang-10 0x00000001094b7111 clang::Sema::getMoreSpecializedTemplate(clang::FunctionTemplateDecl*, clang::FunctionTemplateDecl*, clang::SourceLocation, clang::TemplatePartialOrderingContext, unsigned int, unsigned int) + 97
9 clang-10 0x000000010939bf88 clang::isBetterOverloadCandidate(clang::Sema&, clang::OverloadCandidate const&, clang::OverloadCandidate const&, clang::SourceLocation, clang::OverloadCandidateSet::CandidateSetKind) + 1128
Revert "[Concepts] Fix incorrect move out of temporary in D41910"
This reverts commit 11d5fa6e87e3584f72056ecc2b17f88c58323dde.
Revert "[Concepts] Fix crash in D41910"
This reverts commit 12038be20ee6a903cdbd3fddce65535ef683e31d.
Revert "[Concepts] Constrained partial specializations and function overloads."
This reverts commit fc0731b98a67c793862288f8ae334322666214dc.
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Added support for constraint satisfaction checking and partial ordering of constraints in constrained partial specialization and function template overloads.
Phabricator: D41910
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