Commit Graph

69 Commits

Author SHA1 Message Date
630d175667 Add definition of __warn_unused_result__ attribute. It will be used in the
futher commits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@188689 91177308-0d34-0410-b5e6-96231b3b80d8
2013-08-19 19:02:33 +00:00
ca4ed882f4 Reland "Use Clang's __has_* macros in Compiler.h ..." with fixes
This reverts r185841 and relands r185831 without using
__has_attribute(const).

Clang prior to r161767 (between 3.1 and 3.2) does not accept
__has_attribute(const) due to rdar://10253857.  __const and __const__
are both keyword aliases of const, so they don't work either.

I was able to repro the buildbot failure using clang 3.1 and this patch
fixes it.  Various important versions of XCode use clang 2.9-ish, so
this workaround is necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185850 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-08 19:06:25 +00:00
7b42bedca4 Revert: "Use Clang's __has_* macros in Compiler.h to test for features"
This reverts r185831 and 185833.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185841 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-08 17:32:13 +00:00
a2030eedf1 Attempt to fix Compiler.h for some self-hosting bots
I tested r185831 by self-hosting clang with a recent clang, and got no
warnings.  I haven't been able to reproduce the problem locally.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185833 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-08 16:36:29 +00:00
221f6d777e Use Clang's __has_* macros in Compiler.h to test for features
When targetting Windows, clang does not define __GNUC__, and as a result
we don't use our attributes with it.  This leads to warnings about
unused functions that are already annotated with LLVM_ATTRIBUTE_UNUSED.
Rather than testing for __clang__, we can use its __has_attribute and
__has_builtin macros directlty.

While I'm here, conditionally define and use __GNUC_PREREQ for gcc
version checks.  Spelling the check out with three comparisons is
verbose and error prone.

Reviewers: aaron.ballman

Differential Revision: http://llvm-reviews.chandlerc.com/D1080

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185831 91177308-0d34-0410-b5e6-96231b3b80d8
2013-07-08 15:31:29 +00:00
d1995b2a36 Introduce LLVM_STATIC_ASSERT macro, which expands to C/C++'s static_assert on compilers which support it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177699 91177308-0d34-0410-b5e6-96231b3b80d8
2013-03-22 03:10:51 +00:00
2bbc19c1c6 Make Optional<T>'s operator bool 'explicit' in C++11
Provides a general way to add 'explicit' for conversion operators (a no-op when
compiling as C++98).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175723 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-21 06:05:57 +00:00
782a65056a Fix MSan annotations inclusion guard.
#cmakedefine does not behave the way I though it was.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175050 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-13 10:40:01 +00:00
86f18eb0b3 [Support][Compiler] Add LLVM_HAS_VARIADIC_TEMPLATES.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174913 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-11 22:51:07 +00:00
9c02a27604 More MSan/ASan annotations.
This change lets us bootstrap LLVM/Clang under ASan and MSan. It contains
fixes for 2 issues:

- X86JIT reads return address from stack, which MSan does not know is
  initialized.
- bugpoint tests run binaries with RLIMIT_AS. This does not work with certain
  Sanitizers.

We are no longer including config.h in Compiler.h with this change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174306 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-04 07:03:24 +00:00
d9d2f18775 [Support] Add LLVM_IS_UNALIGNED_ACCESS_FAST.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174271 91177308-0d34-0410-b5e6-96231b3b80d8
2013-02-03 10:48:31 +00:00
ea2d8780e9 Annotate BumpPtrAllocator for MemorySanitizer.
This change adds MemorySanitizer annotations to BumpPtrAllocator to
improve report quality.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174051 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-31 09:58:59 +00:00
f3c437b167 Support/Compiler.h: MSC1600, aka VS2010, is not C++11-ready.
LLVM_HAS_CXX11_TYPETRAITS -- std::is_constructible
LLVM_HAS_CXX11_STDLIB -- std::unique_ptr

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172997 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-21 00:30:31 +00:00
01812bebcc [Support] Port ErrorOr<T> from lld to C++03.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172991 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-20 20:32:30 +00:00
235c022296 [Support] Update MSVC compiler support in Compiler.h.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172644 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-16 19:51:59 +00:00
b5f8cd5bb0 [Support] Add LLVM_CONSTEXPR.
Marks a decl as constexpr if the compiler supports it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172508 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-15 05:01:39 +00:00
caa91f8b85 Add a new portability macro LLVM_FUNCTION_NAME, that expands to __func__, if
supported.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172156 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-11 01:13:51 +00:00
1eae141f19 Compiler.h: Leave LLVM_BUILTIN_UNREACHABLE undefined if it is unavailable in host compiler.
Users of LLVM_BUILTIN_UNREACHABLE should be responsible in the case when LLVM_BUILTIN_UNREACHABLE is undefined.

Actually, (0, (p)) in LLVM_ASSUME_ALIGNED(p, a) caused thousands of warnings on g++-4.4. It was a motivation in this commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171455 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-03 03:30:22 +00:00
3922757824 Restrict __builtin_assume_aligned to gcc 4.7+
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171408 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-02 20:23:49 +00:00
c8b18df9a7 [Support][Endian] Add support for specifying the alignment and native unaligned types.
* Add support for specifying the alignment to use.
* Add the concept of native endianness. Used for unaligned native types.

The native alignment and read/write simplification is based on a patch by Richard Smith.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@171406 91177308-0d34-0410-b5e6-96231b3b80d8
2013-01-02 20:14:11 +00:00
4334dd96a9 Switch LLVM_USE_RVALUE_REFERENCES to LLVM_HAS_RVALUE_REFERENCES.
Rationale:
1) This was the name in the comment block. ;]
2) It matches Clang's __has_feature naming convention.
3) It matches other compiler-feature-test conventions.

Sorry for the noise. =]

I've also switch the comment block to use a \brief tag and not duplicate
the name.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168996 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30 11:45:22 +00:00
a5bf44b0b3 Separate out the tests for whether the compiler suports R-value
references from whether it supports an R-value reference *this. No
version of GCC today supports the latter, which breaks GCC C++11
compiles of LLVM and Clang now.

Also add doxygen comments clarifying what's going on here, and update
the usage in Optional. I'll update the usages in Clang next.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168993 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30 11:04:18 +00:00
adf0c3d82d Add a new C++11 compatibility macro, LLVM_LVALUE_FUNCTION.
This expands to '&', and is intended to be used when an /optional/ rvalue
override is available.

Before:
  void foo() const { ... }

After:
  void foo() const LLVM_LVALUE_FUNCTION { ... }
  void foo() && { ... }

This is used to allow moving the contents of an Optional.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168963 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-30 00:38:53 +00:00
7279809d97 Add an extra slash so doxygen comments will be properly recognized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168554 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-25 00:59:59 +00:00
cee033188f Fix a typo. No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164100 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-18 04:43:05 +00:00
fbb13471ed Add LLVM_OVERRIDE and LLVM_FINAL C++11 compatibility macros.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164005 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-16 20:53:30 +00:00
e20cf3d149 Make sure macros in the include subdirectory are not used without being defined.
Rationale: For each preprocessor macro, either the definedness is what's
meaningful, or the value is what's meaningful, or both. If definedness is
meaningful, we should use #ifdef. If the value is meaningful, we should use
and #ifdef interchangeably for the same macro, seems ugly to me, even if
undefined macros are zero if used.

This also has the benefit that including an LLVM header doesn't prevent
you from compiling with -Wundef -Werror.

Patch by John Garvin!
<rdar://problem/12189979>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163148 91177308-0d34-0410-b5e6-96231b3b80d8
2012-09-04 17:42:53 +00:00
4d69a8c8b2 Explicitly cast an expression to bool before handing it off to __builtin_expect.
Avoids surprises when someone uses LLVM_(UN)LIKELY with an integer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162877 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-29 23:28:45 +00:00
55907d1274 Replace the BUILTIN_EXPECT macro with a less horrible LLVM_LIKELY/LLVM_UNLIKELY interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162873 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-29 22:57:00 +00:00
74169b293f Provide a portability macro for __builtin_trap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162300 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-21 18:54:21 +00:00
b9d565ac99 Add LLVM_DELETED_FUNCTION compatibility macro.
This should replace uses of:

class A {
  A(const &A); // DO NOT IMPLEMENT
public:
  ...
};

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161975 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-15 18:54:36 +00:00
428ff6a644 Fix few warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160576 91177308-0d34-0410-b5e6-96231b3b80d8
2012-07-20 21:30:52 +00:00
86062e6782 Fix trivial typo in llvm_move.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156288 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-07 06:00:23 +00:00
38dbb60675 Update SmallVector to support move semantics if the host does.
Note that support for rvalue references does not imply support
for the full set of move-related STL operations.

I've preserved support for an odd little thing in insert() where
we're trying to support inserting a new element from an existing
one.  If we actually want to support that, there's a lot more we
need to do:  insert can call either grow or push_back, neither of
which is safe against this particular use pattern.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155979 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-02 05:39:15 +00:00
75c0d8e0d8 [Support] Drop verbose _ATTRIBUTE from LLVM_ATTRIBUTE_{READONLY,READNONE} macro
names.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152413 91177308-0d34-0410-b5e6-96231b3b80d8
2012-03-09 16:30:33 +00:00
283b419aea include/llvm/Support/Compiler.h: Invalidate LLVM_ATTRIBUTE_WEAK on cygming for now.
It triggers generating insane executables with both binutils-2.19.1(msysgit) and 2.22.51.20111013(cygwin).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144621 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15 05:24:26 +00:00
ec381a4183 Fix linking for some users who already have tsan enabled code and are trying to
link it against llvm code, by making our definitions weak. "Some users."


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144596 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15 00:14:04 +00:00
8f4a17214c Support/Compiler: Add LLVM_EXTENSION for use where we want to hide pedantic diags.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143468 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-01 17:46:12 +00:00
b121bfcc22 Version N of the llvm_unreachable patch: VC++ doesn't recognize that abort()
doesn't return, so just go back to using the old runtime function instead
of trying to use abort() when __builtin_unreachable (or an equivalent) isn't
supported.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127629 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-14 22:41:50 +00:00
fb32507d09 Okay, some compilers complain if you provide the exception-specification
where none was before.  Just don't declare it and hope it's declared
in every translation unit that needs it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127612 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-14 20:20:29 +00:00
f32b3c54f0 Fix the exception-specification of abort() when declaring it in C++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127610 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-14 20:10:50 +00:00
2f9a9ed785 Make llvm_unreachable evaluate to __builtin_unreachable() in -Asserts
builds, which was the apparent consensus of PR8973 and llvmdev.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127608 91177308-0d34-0410-b5e6-96231b3b80d8
2011-03-14 20:01:21 +00:00
965841cfe4 Support/Path: Deprecate PathV1::isAbsolute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122086 91177308-0d34-0410-b5e6-96231b3b80d8
2010-12-17 21:21:31 +00:00
10d3191cf1 Remove deprecated macro names. Hopefully this will unbreak the
smooshlab build.  The breakage seems to be due to a collision
between LLVM's ATTRIBUTE_UNUSED and gcc's which was previously
hidden due to header files being included in a lucky order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117260 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-25 12:47:22 +00:00
19e57025d4 Move the remaining attribute macros to systematic names based on the attribute
name and prefixed with 'LLVM_'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117203 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 08:40:19 +00:00
100c267249 Switch attribute macros to use 'LLVM_' as a prefix. We retain the old names
until other LLVM projects using these are cleaned up.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117200 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-23 08:10:43 +00:00
7283da51b8 Add a comment about ATTRIBUTE_UNUSED to avoid further confusion over when to
use it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116920 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-20 08:44:27 +00:00
a0b991be3f Support: Add __forceinline to Compiler.h on MSVC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@115595 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-05 06:00:52 +00:00
97816e1bad Remove LLVM_GLOBAL_VISIBILITY, which is unused, and was not working properly.
The problem was that the test for whether a compiler supports it or not was
inaccurate, but has to be accurate: LLVM_LOCAL_VISIBILITY is an optimization
and not needed for correctness, so wrongly thinking a compiler doesn't support
it is not a big deal, but LLVM_GLOBAL_VISIBILITY is for correctness, and not
an optimization: getting it wrong is fatal: it needs to be set based on a
configure test not testing the gcc version.  Since dragonegg has moved to a
different scheme, and it was the only user of LLVM_GLOBAL_VISIBILITY, just
remove this macro.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113959 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-15 08:09:55 +00:00
f8ff40c059 Define LLVM_GLOBAL_VISIBILITY to be __declspec(dllexport) on
windows systems.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112700 91177308-0d34-0410-b5e6-96231b3b80d8
2010-09-01 13:07:11 +00:00