This adds -std=c17, -std=gnu17, and -std=iso9899:2017 as language mode flags for C17 and updates the value of __STDC_VERSION__ to the value based on the C17 FDIS. Given that this ballot cannot succeed until 2018, it is expected that we (and GCC) will add c18 flags as aliases once the ballot passes.
llvm-svn: 320089
This behaves similar to the __has_cpp_attribute builtin macro in that it allows users to detect whether an attribute is supported with the [[]] spelling syntax, which can be enabled in C with -fdouble-square-bracket-attributes.
llvm-svn: 320088
Summary:
This enables us to use information in Preprocessor when handling symbol
occurrences.
Reviewers: arphaman, hokein
Reviewed By: hokein
Subscribers: malaperle, cfe-commits
Differential Revision: https://reviews.llvm.org/D40884
llvm-svn: 320030
This is a follow up of r302131, in which we forgot to add SemaChecking
tests. Adding these tests revealed two problems which have been fixed:
- added missing intrinsic __qdbl,
- properly range checking ssat16 and usat16.
Differential Revision: https://reviews.llvm.org/D40888
llvm-svn: 320019
Summary:
This feature was discussed but not yet proposed. It allows a structured binding to appear as a //condition//
if (auto [ok, val] = f(...))
So the user can save an extra //condition// if the statement can test the value to-be-decomposed instead. Formally, it makes the value of the underlying object of the structured binding declaration also the value of a //condition// that is an initialized declaration.
Considering its logicality which is entirely evident from its trivial implementation, I think it might be acceptable to land it as an extension for now before I write the paper.
Reviewers: rsmith, faisalv, aaron.ballman
Reviewed By: rsmith
Subscribers: aaron.ballman, cfe-commits
Differential Revision: https://reviews.llvm.org/D39284
llvm-svn: 320011
Summary:
This is so we can implement concepts per P0734R0. Relevant failing test
cases are disabled.
Reviewers: hubert.reinterpretcast, rsmith, saar.raz, nwilson
Reviewed By: saar.raz
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D40380
Patch by Changyu Li!
llvm-svn: 319992
codepath plus the new "minimum / maximum value of type" diagnostic to get the
same effect.
Move the warning for an in-range but tautological comparison of a constant (0
or 1) against a bool out of -Wtautological-constant-out-of-range-compare into
the more-appropriate -Wtautological-constant-compare.
llvm-svn: 319942
Summary: This patch implements 4.3 of http://open-std.org/jtc1/sc22/wg21/docs/papers/2014/n4220.pdf. If a raw string contains a newline character, replace each newline character with the \n escape code. Without this patch, included test case (macro_raw_string.cpp) results compilation failure.
Reviewers: rsmith, doug.gregor, jkorous-apple
Reviewed By: jkorous-apple
Subscribers: jkorous-apple, vsapsai, cfe-commits
Differential Revision: https://reviews.llvm.org/D39279
llvm-svn: 319904
Commit 7ac28eb0a5 / r310911 ("[OpenCL] Allow targets to select address
space per type", 2017-08-15) made Basic depend on AST, introducing a
circular dependency. Break this dependency by adding the
OpenCLTypeKind enum in Basic and map from AST types to this enum in
ASTContext.
Differential Revision: https://reviews.llvm.org/D40838
llvm-svn: 319883
This can be used by clients in conjunction with an offset returned by
e.g. clang_getFileLocation. Now those clients do not need to also
open/read the file.
Differential Revision: https://reviews.llvm.org/D40643
llvm-svn: 319881
Array subscript is almost always an lvalue, except for a few cases where
it is not, such as a subscript into an Objective-C property, or a
return from the function.
This commit prevents crashing in such cases.
Fixes rdar://34829842
Differential Revision: https://reviews.llvm.org/D40584
llvm-svn: 319834
Fedora27 is using a new version of glibc that refers to the _Float128 type. This
patch adds that name as an alias to float128. I also added some predefined macro
values for the digits, mantissa, epilon, etc (FloatMacros). For the test case, I
copied an existing float128 test. This functionality needs work long term, but
it should be sufficient to tread water for a while. At Intel we have test
servers running our LLVM compiler with various open source workloads, the server
has been upgraded to Fedora27 so many workloads are failing due to _Float128.
Patch-By: mibintc
Differential Revision: https://reviews.llvm.org/D40673
llvm-svn: 319703
by client
This patch extends libclang by allowing it to record parsing operations to a
temporary JSON file. The file is deleted after parsing succeeds. When a crash
happens during parsing, the file is preserved and the client will be able to use
it to generate a reproducer for the crash.
These files are not emitted by default, and the client has to specify the
invocation emission path first.
rdar://35322543
Differential Revision: https://reviews.llvm.org/D40527
llvm-svn: 319702
whether they have an initializer.
We cannot distinguish between a declaration of a variable template
specialization and a definition of one that lacks an initializer without this,
and would previously mistake the latter for the former.
llvm-svn: 319605
As rsmith pointed out, the original implementation of this intrinsic
missed a number of important situations. This patch fixe a bunch of
shortcomings and implementation details to make it work correctly.
Differential Revision: https://reviews.llvm.org/D39347
llvm-svn: 319446
Sometimes we check the validity of some construct between producing a
diagnostic and producing its notes. Ideally, we wouldn't do that, but in
practice running code that "cannot possibly produce a diagnostic" in such a
situation should be safe, and reasonable factoring of some code requires it
with our current diagnostics infrastruture. If this does happen, a diagnostic
that's suppressed due to SFINAE should not cause notes connected to the prior
diagnostic to be suppressed.
llvm-svn: 319408
Summary:
The -fxray-always-emit-customevents flag instructs clang to always emit
the LLVM IR for calls to the `__xray_customevent(...)` built-in
function. The default behaviour currently respects whether the function
has an `[[clang::xray_never_instrument]]` attribute, and thus not lower
the appropriate IR code for the custom event built-in.
This change allows users calling through to the
`__xray_customevent(...)` built-in to always see those calls lowered to
the corresponding LLVM IR to lay down instrumentation points for these
custom event calls.
Using this flag enables us to emit even just the user-provided custom
events even while never instrumenting the start/end of the function
where they appear. This is useful in cases where "phase markers" using
__xray_customevent(...) can have very few instructions, must never be
instrumented when entered/exited.
Reviewers: rnk, dblaikie, kpw
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D40601
llvm-svn: 319388
directives.
According to the OpenMP standard, only loop control variables can be
used in linear clauses of distribute-based simd directives.
llvm-svn: 319362
This warning is known to be noisy and projects frequently disable it. In
particular, this should make building isl as bundled in polly with
clang-cl a lot quieter.
llvm-svn: 319336
This is a re-apply of r319294.
adds -fseh-exceptions and -fdwarf-exceptions flags
clang will check if the user has specified an exception model flag,
in the absense of specifying the exception model clang will then check
the driver default and append the model flag for that target to cc1
-fno-exceptions has a higher priority then specifying the model
move __SEH__ macro definitions out of Targets into InitPreprocessor
behind the -fseh-exceptions flag
move __ARM_DWARF_EH__ macrodefinitions out of verious targets and into
InitPreprocessor behind the -fdwarf-exceptions flag and arm|thumb check
remove unused USESEHExceptions from the MinGW Driver
fold USESjLjExceptions into a new GetExceptionModel function that
gives the toolchain classes more flexibility with eh models
Reviewers: rnk, mstorsjo
Differential Revision: https://reviews.llvm.org/D39673
llvm-svn: 319297
adds -fseh-exceptions and -fdwarf-exceptions flags
clang will check if the user has specified an exception model flag,
in the absense of specifying the exception model clang will then check
the driver default and append the model flag for that target to cc1
clang cc1 assumes dwarf is the default if none is passed
and -fno-exceptions has a higher priority then specifying the model
move __SEH__ macro definitions out of Targets into InitPreprocessor
behind the -fseh-exceptions flag
move __ARM_DWARF_EH__ macrodefinitions out of verious targets and into
InitPreprocessor behind the -fdwarf-exceptions flag and arm|thumb check
remove unused USESEHExceptions from the MinGW Driver
fold USESjLjExceptions into a new GetExceptionModel function that
gives the toolchain classes more flexibility with eh models
Reviewers: rnk, mstorsjo
Differential Revision: https://reviews.llvm.org/D39673
llvm-svn: 319294
These functions were defined as static members of TemplateSpecializationType.
Now they are moved to namespace level. Previously there were different
implementations for lists containing TemplateArgument and TemplateArgumentLoc,
now these implementations share the same code.
This change is a result of refactoring patch D40508. NFC.
llvm-svn: 319178
Alexey Bataev