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As reported here https://bugs.llvm.org/show_bug.cgi?id=34988
[[nodiscard]] warnings were not being suppressed for
volatile-ref return values.

Differential Revision: https://reviews.llvm.org/D39075


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Patch by: Adam Balogh!

Differential Revision: https://reviews.llvm.org/D39048


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* Add missing override keyword.
* avoid unnecessary copy of std::string.

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These typos appeared in SVN r309226 and r309327.

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instantiation declarations if they are usable from constant expressions.

We are permitted to instantiate in these cases, and required to do so in order
to have an initializer available for use within constant evaluation.


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The .cpp file has this properly capitalized, but 
the header does not.  Simply fixed it.


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Summary:
This patch enables sorting the full block of using declarations when
some line is affected.

Reviewers: djasper

Reviewed By: djasper

Subscribers: cfe-commits, klimek

Differential Revision: https://reviews.llvm.org/D39024

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No functionality change intended.

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unittest.

As suggested by Haojian Wu!


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consecutive statements

This commit adds a CodeRangeASTSelection value to the refactoring library. This
value represents a set of selected statements in one body of code.

Differential Revision: https://reviews.llvm.org/D38835


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This patch has the following changes
A new flag "-mhvx-length={64B|128B}" is introduced to specify the length of the vector.
Previously we have used "-mhvx-double" for 128 Bytes. This adds the target-feature "+hvx-length{64|128}b"

The "-mhvx" flag must be provided on command line to enable HVX for Hexagon. If no -mhvx-length flag
is specified, a default length is picked from the arch mentioned in this priority order from either -mhvx=vxx
or -mcpu. For v60 and v62 the default length is 64 Byte. For unknown versions, the length is 128 Byte. The 
-mhvx flag adds the target-feature "+hvxv{hvx_version}"

The 64 Byte mode is soon going to be deprecated. A warning is emitted if 64 Byte is enabled. A warning is
still emitted for the default 64 Byte as well. This warning can be suppressed with a -Wno flag.

The "-mhvx-double" and "-mno-hvx-double" flags are deprecated. A warning is emitted if the driver sees
them on commandline. "-mhvx-double" is an alias to "-mhvx-length=128B"

The compilation will error out if -mhvx-length is specified with out an -mhvx/-mhvx= flag

The macro HVX_LENGTH is defined and is set to the length of the vector. 
Eg: #define HVX_LENGTH 64

The macro HVX_ARCH is defined and is set to the version of the HVX. 
Eg: #define HVX_ARCH 62

Differential Revision: https://reviews.llvm.org/D38852


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Enable support for the [[maybe_unused]] attribute from WG14 N2053 when enabling double square bracket attributes in C code.

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Enable support for the [[fallthrough]] attribute from WG14 N2052 when enabling double square bracket attributes in C code.

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Summary:
* Support rename alias.
* Add unittests for renaming alias.
* Don't generate fixes for the SourceLocations that are invalid or in temporary
  buffer, otherwise crash would be happened when generating AtomicChanges.

Reviewers: ioeric

Reviewed By: ioeric

Subscribers: klimek, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D39043

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Patch by: Rafael Stahl!

Differential Revision: https://reviews.llvm.org/D38943


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It'd be better that they are #cmakedefine01 rather than #cmakedefine.
(#if FOO rather than #if defined(FOO))
Then we can find missing #include "clang/Config/config.h" in the future.

Differential Revision: https://reviews.llvm.org/D35541

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instantiation, follow lexical parents not semantic ones: we want to find the
module where the pattern was written.


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Differential Revision: https://reviews.llvm.org/D39017

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Darwin and OpenBSD are the only platforms which use `long int` for
`__INTPTR_TYPE__`.  The other platforms use `int` in 32-bit, and `long
int` on 64-bit (except for VMS and Windows which are LLP64).  Adjust the
type definitions to match the platform definitions.  We now generate the
same definition as GCC on all the targets.

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The substitution for %debuginfo_tests had been inadvertently removed.
This adds it back.

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The `IntPtrType` for Windows ARM should be `int` as per MSVC.  Adjust
the type accordingly.

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Remove an option to use a reference type (on by default!) since a
non-reference type is always needed for creating expressions, functions
with multiple boolean parameters are very hard to use, and in general it
was just a booby trap for further crashes.
Furthermore, generalize call_once test case to fix some of the crashes mentioned
https://bugs.llvm.org/show_bug.cgi?id=34869
Also removes std::call_once crash.

Differential Revision: https://reviews.llvm.org/D39015

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This is basically like r288207, just the other way round.


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As reported here: https://bugs.llvm.org/show_bug.cgi?id=34973

"catch(...)" should catch EVERYTHING, even a rethrow. This
patch changes the order in which things are checked to ensure
that a '...' catch will get a rethrow.

Differential Revision: https://reviews.llvm.org/D39013


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This test case was missing -fsyntax-only, so I've added it. NFC to the actual test contents, just how the test is executed.

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Enable support for the [[nodiscard]] attribute from WG14 N2050 when enabling double square bracket attributes in C code.

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Changes behavior introduced in r298369 to only error out on
vector component invalid length access on OpenCL mode.

Differential Revision: https://reviews.llvm.org/D38868

rdar://problem/33568748

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I ran across an instance where the value was being loaded
out via back, then immediately popped.  Since pop_back_val
is more efficient at this (it moves out), replace this 
instance.


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Use the new helper methods to get the underlying type for NSUInteger,
NSInteger types.  This avoids spreading the knowledge of the underlying
types in various sites.  For non-LLP64 targets, this has no change.

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If the variables is boolean and we generating inner function with real
types, the codegen may crash because of not loading boolean value from
memory.

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This allows to return the static value that we know at compile time.

Differential Revision: https://reviews.llvm.org/D38968

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Currently clang assumes the temporary variables emitted during
codegen of atomic builtins have address space 0, which
is not true for target triple amdgcn---amdgiz and causes invalid
bitcasts.

This patch fixes that.

Differential Revision: https://reviews.llvm.org/D38966


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Summary:
* Add unit tests for renaming enum.
* Support unscoped enum constants in expressions.

Reviewers: ioeric

Reviewed By: ioeric

Subscribers: klimek, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D38989

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