Commit Graph

206 Commits

Author SHA1 Message Date
Nico Weber 1dbff9a406 Mention clang-cl improvements from r335466 and r336379 in ReleaseNotes.rst
llvm-svn: 337381
2018-07-18 11:55:03 +00:00
Peter Collingbourne 14b468bab6 Re-land r337333, "Teach Clang to emit address-significance tables.",
which was reverted in r337336.

The problem that required a revert was fixed in r337338.

Also added a missing "REQUIRES: x86-registered-target" to one of
the tests.

Original commit message:
> Teach Clang to emit address-significance tables.
>
> By default, we emit an address-significance table on all ELF
> targets when the integrated assembler is enabled. The emission of an
> address-significance table can be controlled with the -faddrsig and
> -fno-addrsig flags.
>
> Differential Revision: https://reviews.llvm.org/D48155

llvm-svn: 337339
2018-07-18 00:27:07 +00:00
Peter Collingbourne 35c6996b68 Revert r337333, "Teach Clang to emit address-significance tables."
Causing multiple failures on sanitizer bots due to TLS symbol errors,
e.g.

/usr/bin/ld: __msan_origin_tls: TLS definition in /home/buildbots/ppc64be-clang-test/clang-ppc64be/stage1/lib/clang/7.0.0/lib/linux/libclang_rt.msan-powerpc64.a(msan.cc.o) section .tbss.__msan_origin_tls mismatches non-TLS reference in /tmp/lit_tmp_0a71tA/mallinfo-3ca75e.o

llvm-svn: 337336
2018-07-17 23:56:30 +00:00
Peter Collingbourne 27242c0402 Teach Clang to emit address-significance tables.
By default, we emit an address-significance table on all ELF
targets when the integrated assembler is enabled. The emission of an
address-significance table can be controlled with the -faddrsig and
-fno-addrsig flags.

Differential Revision: https://reviews.llvm.org/D48155

llvm-svn: 337333
2018-07-17 23:17:16 +00:00
Aaron Ballman 0050466976 The :option: syntax was generating Sphinx build warnings; switched to double backticks to silence the warning; NFC.
llvm-svn: 335843
2018-06-28 12:05:40 +00:00
Piotr Padlewski e368de364e Add -fforce-emit-vtables
Summary:
 In many cases we can't devirtualize
 because definition of vtable is not present. Most of the
 time it is caused by inline virtual function not beeing
 emitted. Forcing emitting of vtable adds a reference of these
 inline virtual functions.
 Note that GCC was always doing it.

Reviewers: rjmccall, rsmith, amharc, kuhar

Subscribers: llvm-commits, cfe-commits

Differential Revision: https://reviews.llvm.org/D47108

Co-authored-by: Krzysztof Pszeniczny <krzysztof.pszeniczny@gmail.com>
llvm-svn: 334600
2018-06-13 13:55:42 +00:00
Jonas Devlieghere b48447a1d6 [diagtool] Add diagtool to install target.
Although not very well known, diagtool is an incredibly convenient
utility for dealing with diagnostics.
Particularly useful are the "tree" and "show-enabled" commands:

 - The former prints the hierarchy of diagnostic (warning) flags and
   which of them are enabled by default.
 - The latter can be used to replace an invocation to clang and will
   print which diagnostics are disabled, warnings or errors.
   For instance: `diagtool show-enabled -Wall -Werror /tmp/test.c` will
   print that -Wunused-variable (warn_unused_variable) will be treated as
   an error.

This patch adds them to the install target so it gets shipped with the
LLVM release. It also adds a very basic man page and mentions this
change in the release notes.

Differential revision: https://reviews.llvm.org/D46694

llvm-svn: 332448
2018-05-16 10:23:25 +00:00
Eugene Zelenko ad5684aae0 [Documentation] Fix Release Notes format issues.
llvm-svn: 332405
2018-05-15 21:45:01 +00:00
Krasimir Georgiev f2ca41dbba [clang-format] Add raw string formatting to release notes
Reviewers: hans

Reviewed By: hans

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D46572

llvm-svn: 331750
2018-05-08 09:25:12 +00:00
Richard Smith b5a317fbf6 Non-zero-length bit-fields make a class non-empty.
This implements the rule intended by the standard (see LWG 2358)
and the rule intended by the Itanium C++ ABI (see
https://github.com/itanium-cxx-abi/cxx-abi/pull/51), and makes
Clang match the behavior of GCC, ICC, and MSVC.

A pedantic reading of both the standard and the ABI indicate that Clang
is currently technically correct, but that's not worth much when it's
clear that the wording is wrong in both those places.

This is an ABI break for classes that derive from a class that is empty
other than one or more unnamed non-zero-length bit-fields. Such cases
are expected to be rare, but -fclang-abi-compat=6 restores the old
behavior just in case.

Differential Revision: https://reviews.llvm.org/D45174

llvm-svn: 331620
2018-05-07 06:43:30 +00:00
Sanjay Patel c81450e29b [Driver, CodeGen] rename options to disable an FP cast optimization
As suggested in the post-commit thread for rL331056, we should match these 
clang options with the established vocabulary of the corresponding sanitizer
option. Also, the use of 'strict' is well-known for these kinds of knobs, 
and we can improve the descriptive text in the docs.

So this intends to match the logic of D46135 but only change the words.
Matching LLVM commit to match this spelling of the attribute to follow shortly.

Differential Revision: https://reviews.llvm.org/D46236

llvm-svn: 331209
2018-04-30 18:19:03 +00:00
Richard Smith 4ae767ba3d PR37275 packed attribute should not apply to base classes
Clang incorrectly applied the packed attribute to base classes. Per GCC's
documentation and as can be observed from its behavior, packed only applies to
members, not base classes.

This change is conditioned behind -fclang-abi-compat so that an ABI break can
be avoided by users if desired.

Differential Revision: https://reviews.llvm.org/D46218

llvm-svn: 331136
2018-04-29 04:55:46 +00:00
Sanjay Patel c1ecbf261f [docs] more dashes
llvm-svn: 331057
2018-04-27 16:24:39 +00:00
Sanjay Patel cee47befe4 [docs] add -ffp-cast-overflow-workaround to the release notes
This option was added with:
D46135
rL331041
...copying the text from UsersManual.rst for more exposure.

llvm-svn: 331056
2018-04-27 16:21:22 +00:00
Roman Lebedev 6ed0fad999 [Sema] Add -Wno-self-assign-overloaded
Summary:
It seems there isn't much enthusiasm for `-wtest` D45685.

This is more conservative version, which i had in the very first
revision of D44883, but that 'erroneously' got removed because of the review.

**Based on some [irc] discussions, it must really be documented that
we want all the new diagnostics to have their own flags, to ease
rollouts, transitions, etc.**

Please do note that i'm only adding `-Wno-self-assign-overloaded`,
but not `-Wno-self-assign-field-overloaded`, because i'm honestly
not aware of any false-positives from the `-field` variant,
but i can just as easily add it if wanted.
https://reviews.llvm.org/D44883#1068561

Reviewers: dblaikie, aaron.ballman, thakis, rjmccall, rsmith

Reviewed By: dblaikie

Subscribers: Quuxplusone, chandlerc, cfe-commits

Differential Revision: https://reviews.llvm.org/D45766

llvm-svn: 330651
2018-04-23 21:35:21 +00:00
Jonas Hahnfeld 8da9c2a2f7 [CUDA] Document recent changes
* Finding installations via ptxas binary
 * Relocatable device code

Differential Revision: https://reviews.llvm.org/D45449

llvm-svn: 330426
2018-04-20 13:04:54 +00:00
Roman Lebedev 61061d69ea [Sema] Extend -Wself-assign and -Wself-assign-field to warn on overloaded self-assignment (classes)
Summary:
This has just bit me, so i though it would be nice to avoid that next time :)
Motivational case:
  https://godbolt.org/g/cq9UNk
Basically, it's likely to happen if you don't like shadowing issues,
and use `-Wshadow` and friends. And it won't be diagnosed by clang.

The reason is, these self-assign diagnostics only work for builtin assignment
operators. Which makes sense, one could have a very special operator=,
that does something unusual in case of self-assignment,
so it may make sense to not warn on that.

But while it may be intentional in some cases, it may be a bug in other cases,
so it would be really great to have some diagnostic about it...

Reviewers: aaron.ballman, rsmith, rtrieu, nikola, rjmccall, dblaikie

Reviewed By: rjmccall

Subscribers: EricWF, lebedev.ri, thakis, Quuxplusone, cfe-commits

Differential Revision: https://reviews.llvm.org/D44883

llvm-svn: 329493
2018-04-07 10:39:21 +00:00
Richard Smith b6070db0d0 DR1672, DR1813, DR1881, DR2120: Implement recent fixes to "standard
layout" rules.

The new rules say that a standard-layout struct has its first non-static
data member and all base classes at offset 0, and consider a class to
not be standard-layout if that would result in multiple subobjects of a
single type having the same address.

We track "is C++11 standard-layout class" separately from "is
standard-layout class" so that the ABIs that need this information can
still use it.

Differential Revision: https://reviews.llvm.org/D45176

llvm-svn: 329332
2018-04-05 18:55:37 +00:00
Sylvestre Ledru e0b4638c6b As we don't use minor version anymore, let's remove it from the release notes too
llvm-svn: 329161
2018-04-04 09:38:22 +00:00
Richard Smith bb0ad1e882 Use Clang when referring to the project and clang when referring to the binary.
llvm-svn: 329098
2018-04-03 18:28:13 +00:00
Sylvestre Ledru a8b717fda4 Rename clang link from clang-X.Y to clang-X
Summary:
As we are only doing X.0.Z releases (not using the minor version), there is no need to keep -X.Y in the version.
So, instead, I propose the following:
Instead of having clang-7.0 in bin/, we will have clang-7

Since also matches was gcc is doing.

Reviewers: tstellar, dlj, dim, hans

Reviewed By: dim, hans

Subscribers: dim, mgorny, cfe-commits

Differential Revision: https://reviews.llvm.org/D41808

llvm-svn: 328769
2018-03-29 10:05:46 +00:00
Roman Lebedev c9977f3877 [docs] ReleaseNotes: document -Wextra-semi changes.
I should have done it in rL327558 / D43162, but forgot..

I'm not 100% sure about the text, but i don't think
it warrants a whole new differential revision.

llvm-svn: 327725
2018-03-16 18:01:07 +00:00
Eugene Zelenko d02f3e9673 [Documentation] Fix Release notes problems introduced in r326889. Add highlighting.
llvm-svn: 326979
2018-03-08 01:37:39 +00:00
Yuka Takahashi ba900ab93d Add Clang ReleaseNotes that --autocomplete breaks backward compatibily
Summary:
--autocomplete flag now handles all the flags passed to shell, and this
implementation breaks backward compatibily before Clang 6.0.

Reviewers: teemperor, v.g.vassilev

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D44191

llvm-svn: 326889
2018-03-07 11:34:02 +00:00
Erich Keane ace10a20a6 Document attribute target multiversioning.
Add attribute target multiversioning to the release notes. 
Additionally adds multiversioning support to the attribute
documentation for 'target'.

Differential Revision: https://reviews.llvm.org/D41837

llvm-svn: 322043
2018-01-08 23:36:29 +00:00
Hans Wennborg 7b852ea4aa Update docs version and clear release notes for 7.0.0
llvm-svn: 321728
2018-01-03 15:49:39 +00:00
Alexey Bataev 561d7a96c3 [docs] Updated ReleaseNotes for OpenMP part.
llvm-svn: 321561
2017-12-29 18:23:12 +00:00
Aaron Ballman 802de4f7ac Harmonize GNU- and C++-style attribute spellings.
Most attributes will now use the Clang<"name"> construct to provide both __attribute__((name)) and [[clang::name]] syntaxes for the attribute. Attributes deviating from this should be marked with a comment explaining why they are not supported under both spellings. Common reasons are: the attribute is provided by some other specification that controls the syntax or the attribute cannot be exposed under a particular spelling for some given reason.

Because this is a mechanical change that only introduces new spellings, there are no test cases for the commit.

llvm-svn: 320752
2017-12-14 22:17:09 +00:00
Alex Lorenz d8ec431143 [Preprocessor] Implement __is_target_{arch|vendor|os|environment} function-like
builtin macros

This patch implements the __is_target_arch, __is_target_vendor, __is_target_os,
and __is_target_environment Clang preprocessor extensions that were proposed by
@compnerd in Bob's cfe-dev post:
http://lists.llvm.org/pipermail/cfe-dev/2017-November/056166.html.

These macros can be used to examine the components of the target triple at
compile time. A has_builtin(is_target_???) preprocessor check can be used to
check for their availability.

__is_target_arch allows you to check if an arch is specified without worring
about a specific subarch, e.g.

__is_target_arch(arm) returns 1 for the target arch "armv7"
__is_target_arch(armv7) returns 1 for the target arch "armv7"
__is_target_arch(armv6) returns 0 for the target arch "armv7"

__is_target_vendor and __is_target_environment match the specific vendor
or environment. __is_target_os matches the specific OS, but
__is_target_os(darwin) will match any Darwin-based OS. "Unknown" can be used
to test if the triple's component is specified.

rdar://35753116

Differential Revision: https://reviews.llvm.org/D41087

llvm-svn: 320734
2017-12-14 19:22:02 +00:00
Tim Northover 36bb6d5d46 Switch to gnu++14 as the default dialect.
This is C++14 with conforming GNU extensions.

llvm-svn: 320250
2017-12-09 12:09:54 +00:00
Aaron Ballman 5b6c0f75e0 Add new language mode flags for C17.
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
2017-12-07 21:46:26 +00:00
Aaron Ballman 48f5f4d895 Add support for the __has_c_attribute builtin preprocessor macro.
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
2017-12-07 21:37:49 +00:00
Sylvestre Ledru c941039bd4 [clang-format] Releasenotes for rL319024 : Add option to group multiple #include blocks when sorting includes
Summary:
This change adds missing releasenotes for commit rL319024
https://reviews.llvm.org/rL319024

Patch by Krzysztof Kapusta

Reviewers: sylvestre.ledru

Reviewed By: sylvestre.ledru

Differential Revision: https://reviews.llvm.org/D40827

llvm-svn: 319748
2017-12-05 09:23:47 +00:00
Roman Lebedev 88b56caa0e [analyzer] Fix false negative on post-increment of uninitialized variable.
Summary:
Currently clang static analyzer does warn on:
```
int x;
x+=1;
x-=1;
x=x+1;
x=x-1;
```
But does warn on:
```
int x;
x++;
x--;
--x;
++x;
```

This differential should fix that.
Fixes https://bugs.llvm.org/show_bug.cgi?id=35419

Reviewers: dcoughlin, NoQ

Reviewed By: dcoughlin

Subscribers: NoQ, xazax.hun, szepet, cfe-commits, a.sidorin

Tags: #clang

Differential Revision: https://reviews.llvm.org/D40463

llvm-svn: 319411
2017-11-30 09:18:35 +00:00
Roman Lebedev d9af8e1f98 [Sema] Document+test the -Wsign-conversion change for enums in C code [NFC]
Basically a regression after r316268.
However the diagnostic is correct, but the test coverage is bad.

So just like rL316500, introduce yet more tests,
and adjust the release notes.

See https://bugs.llvm.org/show_bug.cgi?id=35200

llvm-svn: 317421
2017-11-04 20:27:47 +00:00
Nico Weber 0763ab4d6a Use -fuse-init-array if no gcc installation is found.
clang currently uses .init_array instead of .ctors on Linux if it detects gcc
4.7+. Make it so that it also uses .init_array if no gcc installation is found
at all – if there's no old gcc, there's nothing we need to be compatible with.

icecc for example runs clang in a very small chroot, so before this change
clang would use .ctors if run under icecc. And lld currently silently mislinks
inputs with .ctors sections, so before this clang + icecc + lld would produce
broken binaries. (But this seems like a good change independent of that lld
bug.)

https://reviews.llvm.org/D39317

llvm-svn: 316713
2017-10-26 23:26:29 +00:00
Roman Lebedev 809df34efc [Sema] -Wzero-as-null-pointer-constant: don't warn for system macros other than NULL.
Summary:
The warning was initially introduced in D32914 by @thakis,
and the concerns were raised there, and later in rL302247
and PR33771.

I do believe that it makes sense to relax the diagnostic
e.g. in this case, when the expression originates from the
system header, which can not be modified. This prevents
adoption for the diagnostic for codebases which use pthreads
(`PTHREAD_MUTEX_INITIALIZER`), gtest, etc.

As @malcolm.parsons suggests, it *may* make sense to also
not warn for the template types, but it is not obvious to
me how to do that in here.

Though, it still makes sense to complain about `NULL` macro.

While there, add more tests.

Reviewers: dblaikie, thakis, rsmith, rjmccall, aaron.ballman

Reviewed By: thakis

Subscribers: Rakete1111, hans, cfe-commits, thakis, malcolm.parsons

Tags: #clang

Differential Revision: https://reviews.llvm.org/D38954

llvm-svn: 316662
2017-10-26 13:18:14 +00:00
Roman Lebedev 7ade0173df [Sema] Document+test the -Wsign-compare change for enums in C code [NFC]
rL316268 / D39122 has fixed PR35009, and now when in C,
these three(?) diagnostics properly use the enum's underlying
datatype.

While it was fixed, the test coverage was clearly insufficient,
because the -Wsign-compare change didn't show up in any of the
tests, until it was reported in the post-commit mail for rL316268.

So add the test for the -Wsign-compare diagnostic for enum
for C code, and while there, document this in the release notes.

The fix itself was obviously correct, so unless we want to silence
this new diagnosed case, i deem this commit to be NFC.

llvm-svn: 316500
2017-10-24 21:05:43 +00:00
Aaron Ballman 2b3bc4ce2b Add release notes for the recent -fdouble-square-bracket-attributes and -fno-double-square-bracket-attributes compiler flags.
llvm-svn: 316269
2017-10-21 16:45:08 +00:00
Roman Lebedev 6de129e710 [Sema] Re-land: Diagnose tautological comparison with type's min/max values
The first attempt, rL315614 was reverted because one libcxx
test broke, and i did not know at the time how to deal with it.

Summary:
Currently, clang only diagnoses completely out-of-range comparisons (e.g. `char` and constant `300`),
and comparisons of unsigned and `0`. But gcc also does diagnose the comparisons with the
`std::numeric_limits<>::max()` / `std::numeric_limits<>::min()` so to speak

Finally Fixes https://bugs.llvm.org/show_bug.cgi?id=34147
Continuation of https://reviews.llvm.org/D37565

Reviewers: rjmccall, rsmith, aaron.ballman

Reviewed By: rsmith

Subscribers: rtrieu, jroelofs, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D38101

llvm-svn: 315875
2017-10-15 20:13:17 +00:00
Roman Lebedev 6f405dbe5c Revert "[Sema] Diagnose tautological comparison with type's min/max values"
This reverts r315614,r315615,r315621,r315622
Breaks http://bb9.pgr.jp/#/builders/20/builds/59

/home/bb9/bootstrap-clang-libcxx-lld-i686-linux/llvm-project/libcxx/test/std/experimental/filesystem/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp:95:17: error: comparison 'long long' > 9223372036854775807 is always false [-Werror,-Wtautological-constant-compare]
    if (max_sec > Lim::max()) return false;
        ~~~~~~~ ^ ~~~~~~~~~~
/home/bb9/bootstrap-clang-libcxx-lld-i686-linux/llvm-project/libcxx/test/std/experimental/filesystem/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp:124:13: error: comparison 'long long' < -9223372036854775808 is always false [-Werror,-Wtautological-constant-compare]
    if (sec < Lim::min() || sec > Lim::max())   return false;
        ~~~ ^ ~~~~~~~~~~
/home/bb9/bootstrap-clang-libcxx-lld-i686-linux/llvm-project/libcxx/test/std/experimental/filesystem/fs.op.funcs/fs.op.last_write_time/last_write_time.pass.cpp:124:33: error: comparison 'long long' > 9223372036854775807 is always false [-Werror,-Wtautological-constant-compare]
    if (sec < Lim::min() || sec > Lim::max())   return false;
                            ~~~ ^ ~~~~~~~~~~
3 errors generated.
--

I'm not yet sure what is the proper fix.

llvm-svn: 315631
2017-10-12 22:03:20 +00:00
Roman Lebedev bd1fc22043 [Sema] Diagnose tautological comparison with type's min/max values
Summary:
Currently, clang only diagnoses completely out-of-range comparisons (e.g. `char` and constant `300`),
and comparisons of unsigned and `0`. But gcc also does diagnose the comparisons with the
`std::numeric_limits<>::max()` / `std::numeric_limits<>::min()` so to speak

Finally Fixes https://bugs.llvm.org/show_bug.cgi?id=34147
Continuation of https://reviews.llvm.org/D37565

Reviewers: rjmccall, rsmith, aaron.ballman

Reviewed By: rsmith

Subscribers: rtrieu, jroelofs, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D38101

llvm-svn: 315614
2017-10-12 20:16:51 +00:00
Reid Kleckner c65f16cec3 [MS] Raise the default value of _MSC_VER to 1911, which is VS 2017
Summary:
This raises our default past 1900, which controls whether char16_t is a
builtin type or not.

Implements PR34243

Reviewers: hans

Subscribers: STL_MSFT, rsmith, cfe-commits

Differential Revision: https://reviews.llvm.org/D38646

llvm-svn: 315107
2017-10-06 21:02:28 +00:00
Sylvestre Ledru a59e654e02 Add the new -Wnull-pointer-arithmetic warnings to the release notes
Differential Revision: https://reviews.llvm.org/D38186

llvm-svn: 314387
2017-09-28 08:00:18 +00:00
Vedant Kumar 90c80a3283 [ubsan-minimal] Document the new runtime
Differential Revision: https://reviews.llvm.org/D37647

llvm-svn: 312957
2017-09-11 21:37:05 +00:00
Roman Lebedev 6aa34aadd1 [Sema] -Wtautological-compare: handle comparison of unsigned with 0S.
Summary:
This is a first half(?) of a fix for the following bug:
https://bugs.llvm.org/show_bug.cgi?id=34147 (gcc -Wtype-limits)

GCC's -Wtype-limits does warn on comparison of unsigned value
with signed zero (as in, with 0), but clang only warns if the
zero is unsigned (i.e. 0U).

Also, be careful not to double-warn, or falsely warn on
comparison of signed/fp variable and signed 0.

Yes, all these testcases are needed.

Testing: $ ninja check-clang-sema check-clang-semacxx
Also, no new warnings for clang stage-2 build.

Reviewers: rjmccall, rsmith, aaron.ballman

Reviewed By: rjmccall

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D37565

llvm-svn: 312750
2017-09-07 22:14:25 +00:00
Sylvestre Ledru 31f4fee0c9 add the option IndentPPDirectives to the release notes. Landed in r312125
llvm-svn: 312535
2017-09-05 13:56:40 +00:00
Hans Wennborg d878ca8487 docs: typo fix
llvm-svn: 312149
2017-08-30 18:35:44 +00:00
Alex Lorenz d9f1284009 [ObjC] Add a -Wobjc-messaging-id warning
-Wobjc-messaging-id is a new, non-default warning that warns about
message sends to unqualified id in Objective-C. This warning is useful
for projects that would like to avoid any potential future compiler
errors/warnings, as the system frameworks might add a method with the same
selector which could make the message send to id ambiguous.

rdar://33303354

llvm-svn: 311779
2017-08-25 16:12:17 +00:00
Sylvestre Ledru d23dd6c633 clang-format: add an option -verbose to list the files being processed
Reviewers: djasper

Reviewed By: djasper

Subscribers: klimek, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D34824

llvm-svn: 310778
2017-08-12 15:15:10 +00:00
Yuka Takahashi 9b6b5d5a88 [Bash-autocompletion] Add --autocomplete flag to 5.0 release notes
Summary:
I thought we should add this information to release notes, because we
added a new flag to clang driver.

Reviewers: v.g.vassilev, teemperor, ruiu

Subscribers: cfe-commits

Differential Revision: https://reviews.llvm.org/D36567

llvm-svn: 310700
2017-08-11 09:44:42 +00:00
Erik Pilkington 1b00372fad [Availability] Don't make an availability attribute imply default visibility on macOS
Fixes PR33796, rdar://33655115

Differential revision: https://reviews.llvm.org/D36191

llvm-svn: 310382
2017-08-08 17:09:09 +00:00
Vedant Kumar a0c3671b20 [ubsan] Have -fsanitize=vptr emit a null check if -fsanitize=null isn't available
In r309007, I made -fsanitize=null a hard prerequisite for -fsanitize=vptr. I
did not see the need for the two checks to have separate null checking logic
for the same pointer. I expected the two checks to either always be enabled
together, or to be mutually compatible.

In the mailing list discussion re: r309007 it became clear that that isn't the
case. If a codebase is -fsanitize=vptr clean but not -fsanitize=null clean,
it's useful to have -fsanitize=vptr emit its own null check. That's what this
patch does: with it, -fsanitize=vptr can be used without -fsanitize=null.

Differential Revision: https://reviews.llvm.org/D36112

llvm-svn: 309846
2017-08-02 18:10:31 +00:00
Manuel Klimek 696e505278 Unify and simplify the behavior of the hasDeclaration matcher.
Originally, we weren't able to match on Type nodes themselves (only QualType),
so the hasDeclaration matcher was initially written to give what we thought are
reasonable results for QualType matches.

When we chagned the matchers to allow matching on Type nodes, it turned out
that the hasDeclaration matcher was by chance written templated enough to now
allow hasDeclaration to also match on (some) Type nodes.

This patch change the hasDeclaration matcher to:
a) work the same on Type and QualType nodes,
b) be completely explicit about what nodes we can match instead of just allowing
   anything with a getDecl() to match,
c) explicitly control desugaring only one level in very specific instances.
d) adds hasSpecializedTemplate and tagType matchers to allow migrating
  existing use cases that now need more explicit matchers

Note: This patch breaks clang-tools-extra. The corresponding patch there
is approved and will land in a subsequent patch.

Differential Revision: https://reviews.llvm.org/D27104

llvm-svn: 309809
2017-08-02 13:04:44 +00:00
Alex Lorenz dbbe822485 Fix release notes indentation from r309562
The additions in r309562 triggered a docs buildbot failure.

llvm-svn: 309564
2017-07-31 14:22:43 +00:00
Alex Lorenz 5174866b1d Document '-Wpragma-pack' in the release notes
llvm-svn: 309562
2017-07-31 14:08:41 +00:00
Erich Keane b0c78096a5 Add bitrig removal to release notes
llvm-svn: 309145
2017-07-26 18:04:45 +00:00
Vedant Kumar bbc953fed4 [ubsan] Null-check pointers in -fsanitize=vptr (PR33881)
The instrumentation generated by -fsanitize=vptr does not null check a
user pointer before loading from it. This causes crashes in the face of
UB member calls (this=nullptr), i.e it's causing user programs to crash
only after UBSan is turned on.

The fix is to make run-time null checking a prerequisite for enabling
-fsanitize=vptr, and to then teach UBSan to reuse these run-time null
checks to make -fsanitize=vptr safe.

Testing: check-clang, check-ubsan, a stage2 ubsan-enabled build

Differential Revision: https://reviews.llvm.org/D35735

https://bugs.llvm.org/show_bug.cgi?id=33881

llvm-svn: 309007
2017-07-25 19:34:23 +00:00
Hans Wennborg fbb21e0315 Clear release notes for 6.0.0
llvm-svn: 308478
2017-07-19 14:14:07 +00:00
George Burgess IV 163a8337ad Add release notes for the overloadable attribute
llvm-svn: 307995
2017-07-14 03:23:57 +00:00
Roman Lebedev ba80b8d437 [clang] Implement -Wcast-qual for C++
Summary:
This way, the behavior of that warning flag
more closely resembles that of GCC.

Do note that there is at least one false-negative (see FIXME in tests).

Fixes PR4802.

Testing:
```
ninja check-clang-sema check-clang-semacxx
```

Reviewers: dblaikie, majnemer, rnk

Reviewed By: dblaikie, rnk

Subscribers: mclow.lists, cfe-commits, alexfh, rnk

Differential Revision: https://reviews.llvm.org/D33102

llvm-svn: 307045
2017-07-03 17:59:22 +00:00
Joerg Sonnenberger c91996817f Add an option group for deprecated warnings. Add the removed
-fslp-vectorize-aggressive and -fno-slp-vectorize-aggressive flags back
under this group and test for the warning. Document the future removal
in the ReleaseNotes.

Differential Revision: https://reviews.llvm.org/D34926

llvm-svn: 306965
2017-07-01 21:36:21 +00:00
Vedant Kumar 840c2c758d [docs] Add some ubsan changes to the release notes
llvm-svn: 305269
2017-06-13 02:52:31 +00:00
Roman Lebedev 5806d9f205 Revert "[clang] Implement -Wcast-qual for C++"
Breaks -Werror builders.

llvm-svn: 305148
2017-06-10 17:49:23 +00:00
Roman Lebedev b0120740c4 [clang] Implement -Wcast-qual for C++
Summary:
This way, the behavior of that warning flag
more closely resembles that of GCC.

Do note that there is at least one false-negative (see FIXME in tests).

Fixes PR4802.

Testing:
```
ninja check-clang-sema check-clang-semacxx
```

Reviewers: dblaikie, majnemer, rnk

Reviewed By: dblaikie, rnk

Subscribers: cfe-commits, alexfh, rnk

Differential Revision: https://reviews.llvm.org/D33102

llvm-svn: 305147
2017-06-10 17:19:19 +00:00
Jonathan Roelofs 335777b79b Fix some sphinx -Werror's
... mostly having to do with code blocks which the syntax highlighter chokes on

llvm-svn: 298275
2017-03-20 17:07:49 +00:00
Krasimir Georgiev 18f4aedae8 Add more clang-format changes to the 5.0 release notes
llvm-svn: 297730
2017-03-14 10:34:39 +00:00
Sylvestre Ledru 72e3fa7e2c describe the recent changes in clang-format in the 5.0 release notes
llvm-svn: 297721
2017-03-14 09:43:55 +00:00
Hans Wennborg 189f1f3dae Don't try to link to the 4.0 release notes
llvm-svn: 294658
2017-02-09 23:26:34 +00:00
Malcolm Parsons c6e4583dbb Remove unused lambda captures. NFC
llvm-svn: 291939
2017-01-13 18:55:32 +00:00
Hans Wennborg 159d6ad24b Clear the release notes for 5.0.0
llvm-svn: 291837
2017-01-12 21:55:16 +00:00
Joerg Sonnenberger c3dccd020e Add entry for -MJ.
llvm-svn: 291814
2017-01-12 21:11:55 +00:00
George Burgess IV 8af74a4a20 Add release notes for `diagnose_if`
Bots seem happy with `diagnose_if` so far, so I'm optimistically adding
release notes for it.

llvm-svn: 291422
2017-01-09 05:58:18 +00:00
Piotr Padlewski 25bb130628 Revert "Mention devirtualization in release notes"
Accidental commit. LLVM changes have not been pushed yet
This reverts commit 592453413690a2d16784667d1644758b9af700c1.

llvm-svn: 290676
2016-12-28 18:25:30 +00:00
Piotr Padlewski a280f674b5 Mention devirtualization in release notes
llvm-svn: 290675
2016-12-28 18:23:23 +00:00
Sylvestre Ledru 503d95dafa As we released 3.9, from the 4.0 release notes, points to version 3.9 instead of 3.8
llvm-svn: 286718
2016-11-12 10:38:18 +00:00
Sylvestre Ledru f6b489797e Add the new option -Og in the release notes. See r286602 for more information
llvm-svn: 286717
2016-11-12 10:37:17 +00:00
Sylvestre Ledru ea49d3addc Add the new scan-build option (--show-description) in the 4.0 release notes
llvm-svn: 277935
2016-08-06 20:23:54 +00:00
Vedant Kumar 5fb00e4bd7 Revert "[Driver] Compute effective target triples once per job (NFCI)"
This reverts commit r275895 in order to address some post-commit review
feedback from Eric Christopher (see: the list thread for r275895).

llvm-svn: 276936
2016-07-27 23:01:55 +00:00
Vedant Kumar bf51e703cf [Driver] Compute effective target triples once per job (NFCI)
Compute an effective target triple exactly once in ConstructJob(), and
then simply pass around references to it. This eliminates wasteful
re-computation of effective triples (e.g in getARMFloatABI()).

Differential Revision: https://reviews.llvm.org/D22290

llvm-svn: 275895
2016-07-18 19:56:38 +00:00
Hans Wennborg 60d06bfc4f Trunk release notes are now for 4.0.0
The 3.9 release are on the 3.9 branch.

llvm-svn: 275844
2016-07-18 18:05:19 +00:00
Paul Robinson f9ede1c2fa Release note for 'nodebug' on variables
llvm-svn: 275817
2016-07-18 17:19:12 +00:00
Pirama Arumuga Nainar c85c85301d Add documentation for RenderScript changes
Summary:
- Document the new 'kernel' attribute
- Mention RenderScript support in the Release Notes.

Reviewers: rsmith

Subscribers: tberghammer, danalbert, cfe-commits, srhines

Differential Revision: http://reviews.llvm.org/D21212

llvm-svn: 273283
2016-06-21 16:09:30 +00:00
Rafael Espindola 8b5b61aaf3 Replace an ambiguous "it"
Thanks to Sean for the suggestion.

llvm-svn: 272260
2016-06-09 13:35:55 +00:00
Rafael Espindola 811e1ee03e Add a release note about the --build-id change.
llvm-svn: 271918
2016-06-06 18:23:11 +00:00
Piotr Padlewski cfed2bf588 [ASTMatchers] Breaking change of `has` matcher
has matcher can now match to implicit and paren casts

http://reviews.llvm.org/D20801

llvm-svn: 271288
2016-05-31 15:25:05 +00:00
Alexey Bataev 44b67508ea [OPENMP] Update in ReleaseNotes for OpenMP support.
Added notes about full support of all non-offloading features of OpenMP
4.5 + info about option -fopenmp-version=[31|40|45] that allows to
control supported OpenMP version.

llvm-svn: 271263
2016-05-31 11:17:08 +00:00
Richard Smith 1a015f5481 More fixes to codeblock formatting in documentation.
llvm-svn: 268749
2016-05-06 16:48:29 +00:00
Aaron Ballman dc76a4db0f s/codeblock/code-block to fix the Sphinx build.
llvm-svn: 268728
2016-05-06 11:56:57 +00:00
Richard Smith 8eb53c8e22 Some release note updates for C++ language acceptance changes since Clang 3.8.
llvm-svn: 268663
2016-05-05 18:40:37 +00:00
Gabor Horvath 1b654f2293 [ASTMatchers] Existing matcher hasAnyArgument fixed
Summary: A checker (will be uploaded after this patch) needs to check implicit casts. The checker needs matcher hasAnyArgument but it ignores implicit casts and parenthesized expressions which disables checking of implicit casts for arguments in the checker. However the documentation of the matcher contains a FIXME that this should be removed once separate matchers for ignoring implicit casts and parenthesized expressions are ready. Since these matchers were already there the fix could be executed. Only one Clang checker was affected which was also fixed (ignoreParenImpCasts added) and is separately uploaded. Third party checkers (not in the Clang repository) may be affected by this fix so the fix must be emphasized in the release notes.

Reviewers: klimek, sbenza, alexfh

Subscribers: alexfh, klimek, xazax.hun, cfe-commits

Differential Revision: http://reviews.llvm.org/D18243

llvm-svn: 264855
2016-03-30 11:22:14 +00:00
Eric Christopher 37df19ebee Add release notes for the removal of the silent include of altivec.h.
llvm-svn: 264236
2016-03-24 01:28:25 +00:00
Hans Wennborg b2ed61a611 ReleaseNotes: update 'you may prefer' link to 3.8
llvm-svn: 263031
2016-03-09 17:26:46 +00:00
NAKAMURA Takumi 33ff1dda6a [Cygwin] Use -femulated-tls by default since r257718 introduced the new pass.
FIXME: Add more targets to use emutls into clang/test/Driver/emulated-tls.cpp.
FIXME: Add cygwin tests into llvm/test/CodeGen/X86. Working in progress.
llvm-svn: 257984
2016-01-16 03:44:52 +00:00
Hans Wennborg ac3ddfffd7 Update version to 3.9
llvm-svn: 257628
2016-01-13 17:32:59 +00:00
Aaron Ballman cdc43afa20 Update the 3.8 release notes with the breaking change information regarding AST matchers.
llvm-svn: 247887
2015-09-17 13:47:22 +00:00
Nico Weber ee1cff5fab Make trunk release notes point to 3.7, not 3.6
llvm-svn: 246589
2015-09-01 21:13:14 +00:00
Hans Wennborg eb2bd9a269 ReleaseNotes: Small version nbr fix
llvm-svn: 244761
2015-08-12 16:40:42 +00:00
Tanya Lattner 4a08e931b6 Update mailing list references to lists.llvm.org
llvm-svn: 244000
2015-08-05 03:55:23 +00:00
Hans Wennborg e904ea2b4d ReleaseNotes.rst: Bump version to 3.8
The notes for 3.7 are on the 3.7 branch.

llvm-svn: 242238
2015-07-14 22:52:36 +00:00