Support for emitting libcalls for __atomic_fetch_nand and
__atomic_{add,sub,and,or,xor,nand}_fetch was missing; add it, and some
test cases.

Differential Revision: http://reviews.llvm.org/D10847

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Add AST matchers for narrowing constructors that are default, copy, or move constructors, as well as functionality to determine whether a ctor initializer is a base initializer.

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It's not valid code (maybe it can be made valid, but I'm not sure how).
To trigger the crash fixed in r243987 requires a friend function with
more than four template parameter lists. With this test we have at least
some coverage.

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SmallVector::set_size does not reallocate the vector. Sadly I have no
idea how to test this. The vector never has more than one member in all
of the regression tests.

Found by inspection.

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set_size only resets the end pointer and asserts if it is used to grow
the buffer. This would crash when mangling a float with more than 80 bits,
add a test with a ppc double double (128 bits).

Found by inspection.

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No functionality change intended.

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That's just ugly and not needed in this case. No functionality change.

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This brings ASTContext closer to LLVM's Allocator concept. Ideally we
would just derive ASTContext from llvm::AllocatorBase, but that does
not work because ASTContext's allocator is mutable and we allocate using
const ASTContext& everywhere.

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No functional change intended.

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OpenMP 4.1 allows 'linear' clause in loop directives. Patch adds support for it.


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If a global variable is marked as private in OpenMP construct and then is used in of the private clauses of the same construct, it might cause compiler crash because of incorrect capturing.


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a bad call to memcpy.

When we only have a buffer from one of the two reparse calls, we can
just return that buffer rather than going through the realloc/memcpy
dance.

Found with UBsan.

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null StringRef objects as inputs.

Found by UBSan.

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a BumpPtrAllocator. This at least now handles the case where there is no
concatentation without calling memcpy on a null pointer. It might be
interesting to handle the case where everything is empty without
round-tripping through the allocator, but it wasn't clear to me if the
pointer returned is significant in any way, so I've left it in
a conservatively more-correct state.

Again, found with UBSan.

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rather than forcing the bump pointer allocator to produce a viable
pointer. This also fixes UB when we would try to memcpy from the null
incoming StringRef.

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the nested name specifier code.

First, skip the entire thing when the input is empty.

Next, handle the case where we started off with a null buffer and a zero
capacity to skip copying and freeing.

This was found with UBSan.

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We should really stop copying and pasting code around. =/

Found by UBSan.

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[modules] Make IndirectFieldDecl mergeable to avoid lookup ambiguity when the same anonymous union is defined across multiple modules.


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Summary: In addition to checking compiler flags, the front-end also examines the attributes of the destructor definition to ensure that the SanitizeMemory attribute is attached.

Reviewers: eugenis, kcc

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D11727

refactored test into new file, revised how function attribute examined

modified test to examine default dtor with and without attribute

removed attribute check

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This adds the required target feature names to x86 builtins that need
particular features. Most have exactly one ("avx", "aes", etc), but some
of the avx512 features have multiple requirements, eg "avx512vl,avx512bw".

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(Because, hey, who wouldn't?)

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Differential Revision: http://reviews.llvm.org/D11581

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Summary: Add IsConcept bit to VarDecl::NonParmVarDeclBitfields and associated isConcept/setConcept member functions. Set IsConcept to true when 'concept' specifier is in variable declaration. Create diagnostic when variable concept is not initialized.

Reviewers: fraggamuffin, hubert.reinterpretcast, faisalv, aaron.ballman, rsmith

Subscribers: aemerson, cfe-commits

Differential Revision: http://reviews.llvm.org/D11600

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Compiler crashed when vector elements / global register vars were used in inline assembler with "m" restriction. This patch fixes this.

Differential Revision: http://reviews.llvm.org/D10476


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Differential Revision: http://reviews.llvm.org/D11642

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This patch fixes bug 23800 ( https://llvm.org/bugs/show_bug.cgi?id=23800#c2 ). There existed a case where the index operand from extractelement was directly used to create a shufflevector mask. Since the index can be of any integral type but the mask must only contain 32 bit integers a 64 bit index operand led to an assertion error later on.

Committed on behalf of mpflanzer (Moritz Pflanzer)

Differential Revision: http://reviews.llvm.org/D10838

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