| Commit message (Collapse) | Author | Age | Files | Lines |
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The clang intrinsic __builtin_preserve_access_index() currently
has signature:
const void * __builtin_preserve_access_index(const void * ptr)
This may cause compiler warning when:
- parameter type is "volatile void *" or "const volatile void *", or
- the assign-to type of the intrinsic does not have "const" qualifier.
Further, this signature does not allow dereference of the
builtin result pointer as it is a "const void *" type, which
adds extra step for the user to do type casting.
Let us change the signature to:
PointerT __builtin_preserve_access_index(PointerT ptr)
such that the result and argument types are the same.
With this, directly dereferencing the builtin return value
becomes possible.
Differential Revision: https://reviews.llvm.org/D67734
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@372294 91177308-0d34-0410-b5e6-96231b3b80d8
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Commit message below, original caused the sphinx build bot to fail, this
one should fix it.
Create UsersManual section entitled 'Controlling Floating Point
Behavior'
Create a new section for documenting the floating point options. Move
all the floating point options into this section, and add new entries
for the floating point options that exist but weren't previously
described in the UsersManual.
Patch By: mibintc
Differential Revision: https://reviews.llvm.org/D67517
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@372229 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts commit a08d5a4b0ebd44dc64f41049ed4e97a3c6d31498.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@372185 91177308-0d34-0410-b5e6-96231b3b80d8
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Behavior'
Create a new section for documenting the floating point options. Move
all the floating point options into this section, and add new entries
for the floating point options that exist but weren't previously
described in the UsersManual.
Patch By: mibintc
Differential Revision: https://reviews.llvm.org/D67517
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@372180 91177308-0d34-0410-b5e6-96231b3b80d8
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Reviewers: a_sidorin, shafik, teemperor, gamesh411, balazske, dkrupp, a.sidorin
Subscribers: rnkovacs, Szelethus, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D66336
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@371839 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This patch introduces the skeleton of the constexpr interpreter,
capable of evaluating a simple constexpr functions consisting of
if statements. The interpreter is described in more detail in the
RFC. Further patches will add more features.
Reviewers: Bigcheese, jfb, rsmith
Subscribers: bruno, uenoku, ldionne, Tyker, thegameg, tschuett, dexonsmith, mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D64146
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@371834 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This option determines whether goto labels are indented according to scope. Setting this option to false causes goto labels to be flushed to the left.
This is mostly copied from [[ http://lists.llvm.org/pipermail/cfe-dev/2015-September/045014.html | this patch ]] submitted by Christian Neukirchen that didn't make its way into trunk.
```
true: false:
int f() { vs. int f() {
if (foo()) { if (foo()) {
label1: label1:
bar(); bar();
} }
label2: label2:
return 1; return 1;
} }
```
Reviewers: klimek, MyDeveloperDay
Reviewed By: MyDeveloperDay
Subscribers: cfe-commits
Tags: #clang, #clang-tools-extra
Patch by: tetsuo-cpp
Differential Revision: https://reviews.llvm.org/D67037
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@371719 91177308-0d34-0410-b5e6-96231b3b80d8
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later Intel CPUs.
AVX512 instructions can cause a frequency drop on these CPUs. This
can negate the performance gains from using wider vectors. Enabling
prefer-vector-width=256 will prevent generation of zmm registers
unless explicit 512 bit operations are used in the original source
code.
I believe gcc and icc both do something similar to this by default.
Differential Revision: https://reviews.llvm.org/D67259
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@371694 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@371627 91177308-0d34-0410-b5e6-96231b3b80d8
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As far as I can tell, gcc passes 256/512 bit vectors __int128 in memory. And passes a vector of 1 _int128 in an xmm register. The backend considers <X x i128> as an illegal type and will scalarize any arguments with that type. So we need to coerce the argument types in the frontend to match to avoid the illegal type.
I'm restricting this to change to Linux and NetBSD based on the
how similar ABI changes have been handled in the past.
PS4, FreeBSD, and Darwin are unaffected. I've also added a
new -fclang-abi-compat version to restore the old behavior.
This issue was identified in PR42607. Though even with the types changed, we still seem to be doing some unnecessary stack realignment.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@371169 91177308-0d34-0410-b5e6-96231b3b80d8
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This adds a more fine-grained list of OpenMP features with their
implementation status and associated reviews/commits.
Reviewers: kkwli0, ABataev, RaviNarayanaswamy, gtbercea, Hahnfeld
Subscribers: bollu, guansong, jfb, hfinkel, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D64375
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370930 91177308-0d34-0410-b5e6-96231b3b80d8
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Breaks BUILD_SHARED_LIBS build, introduces cycles in library dependency
graphs. (clangInterp depends on clangAST which depends on clangInterp)
This reverts r370839, which is an yet another recommit of D64146.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370874 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This patch introduces the skeleton of the constexpr interpreter,
capable of evaluating a simple constexpr functions consisting of
if statements. The interpreter is described in more detail in the
RFC. Further patches will add more features.
Reviewers: Bigcheese, jfb, rsmith
Subscribers: bruno, uenoku, ldionne, Tyker, thegameg, tschuett, dexonsmith, mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D64146
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370839 91177308-0d34-0410-b5e6-96231b3b80d8
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Enables the users to specify an optional flag which would warn for more dead
stores.
Previously it ignored if the dead store happened e.g. in an if condition.
if ((X = generate())) { // dead store to X
}
This patch introduces the `WarnForDeadNestedAssignments` option to the checker,
which is `false` by default - so this change would not affect any previous
users.
I have updated the code, tests and the docs as well. If I missed something, tell
me.
I also ran the analysis on Clang which generated 14 more reports compared to the
unmodified version. All of them seemed reasonable for me.
Related previous patches:
rGf224820b45c6847b91071da8d7ade59f373b96f3
Reviewers: NoQ, krememek, Szelethus, baloghadamsoftware
Reviewed By: Szelethus
Patch by Balázs Benics!
Differential Revision: https://reviews.llvm.org/D66733
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370767 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370671 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts r370636 (git commit 8327fed9475a14c3376b4860c75370c730e08f33)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370642 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This patch introduces the skeleton of the constexpr interpreter,
capable of evaluating a simple constexpr functions consisting of
if statements. The interpreter is described in more detail in the
RFC. Further patches will add more features.
Reviewers: Bigcheese, jfb, rsmith
Subscribers: bruno, uenoku, ldionne, Tyker, thegameg, tschuett, dexonsmith, mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D64146
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370636 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts r370584 (git commit afcb3de117265a69d21e5673356e925a454d7d02)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370588 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This patch introduces the skeleton of the constexpr interpreter,
capable of evaluating a simple constexpr functions consisting of
if statements. The interpreter is described in more detail in the
RFC. Further patches will add more features.
Reviewers: Bigcheese, jfb, rsmith
Subscribers: bruno, uenoku, ldionne, Tyker, thegameg, tschuett, dexonsmith, mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D64146
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370584 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts r370531 (git commit d4c1002e0bbbbab50f6891cdd2f5bd3a8f3a3584)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370535 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This patch introduces the skeleton of the constexpr interpreter,
capable of evaluating a simple constexpr functions consisting of
if statements. The interpreter is described in more detail in the
RFC. Further patches will add more features.
Reviewers: Bigcheese, jfb, rsmith
Subscribers: bruno, uenoku, ldionne, Tyker, thegameg, tschuett, dexonsmith, mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D64146
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370531 91177308-0d34-0410-b5e6-96231b3b80d8
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This reverts r370476 (git commit a5590950549719d0d9ea69ed164b0c8c0f4e02e6)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370481 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This patch introduces the skeleton of the constexpr interpreter,
capable of evaluating a simple constexpr functions consisting of
if statements. The interpreter is described in more detail in the
RFC. Further patches will add more features.
Reviewers: Bigcheese, jfb, rsmith
Subscribers: bruno, uenoku, ldionne, Tyker, thegameg, tschuett, dexonsmith, mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D64146
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370476 91177308-0d34-0410-b5e6-96231b3b80d8
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Subscribers: jkorous, arphaman, kadircet, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D66960
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370451 91177308-0d34-0410-b5e6-96231b3b80d8
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-Deprecate -mmpx and -mno-mpx command line options
-Remove CPUID detection of mpx for -march=native
-Remove MPX from all CPUs
-Remove MPX preprocessor define
I've left the "mpx" string in the backend so we don't fail on old IR, but its not connected to anything.
gcc has also deprecated these command line options. https://www.phoronix.com/scan.php?page=news_item&px=GCC-Patch-To-Drop-MPX
Differential Revision: https://reviews.llvm.org/D66669
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370393 91177308-0d34-0410-b5e6-96231b3b80d8
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Reviewers: sylvestre.ledru, kcc
Reviewed By: sylvestre.ledru
Differential Revision: https://reviews.llvm.org/D66792
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@370035 91177308-0d34-0410-b5e6-96231b3b80d8
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-dA was in the d_group, which is a preprocessor state dumping group.
However -dA is a debug flag to cause a verbose asm. It was already
implemented to do the same thing as -fverbose-asm, so make it just be an
alias.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369926 91177308-0d34-0410-b5e6-96231b3b80d8
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Differential Revision:https://reviews.llvm.org/D64418
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369749 91177308-0d34-0410-b5e6-96231b3b80d8
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This fixes some minor grammatical issues I noticed when reading the docs, and changes the recommended feature testing approach to use __has_attribute instead of __has_extension.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369687 91177308-0d34-0410-b5e6-96231b3b80d8
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update 3 or newer"
This broke compiling some ASan tests with never versions of MSVC/the Win
SDK, see https://crbug.com/996675
> MSVC 2017 update 3 (_MSC_VER 1911) enables /Zc:twoPhase by default, and
> so should clang-cl:
> https://docs.microsoft.com/en-us/cpp/build/reference/zc-twophase
>
> clang-cl takes the MSVC version it emulates from the -fmsc-version flag,
> or if that's not passed it tries to check what the installed version of
> MSVC is and uses that, and failing that it uses a default version that's
> currently 1911. So this changes the default if no -fmsc-version flag is
> passed and no installed MSVC is detected. (It also changes the default
> if -fmsc-version is passed or MSVC is detected, and either indicates
> _MSC_VER >= 1911.)
>
> As mentioned in the MSDN article, the Windows SDK header files in
> version 10.0.15063.0 (Creators Update or Redstone 2) and earlier
> versions do not work correctly with /Zc:twoPhase. If you need to use
> these old SDKs with a new clang-cl, explicitly pass /Zc:twoPhase- to get
> the old behavior.
>
> Fixes PR43032.
>
> Differential Revision: https://reviews.llvm.org/D66394
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369647 91177308-0d34-0410-b5e6-96231b3b80d8
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This looks like a combination of a copy-and-paste (and paste and paste)
error and a commit without reviewing the diff first error.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369496 91177308-0d34-0410-b5e6-96231b3b80d8
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MSVC 2017 update 3 (_MSC_VER 1911) enables /Zc:twoPhase by default, and
so should clang-cl:
https://docs.microsoft.com/en-us/cpp/build/reference/zc-twophase
clang-cl takes the MSVC version it emulates from the -fmsc-version flag,
or if that's not passed it tries to check what the installed version of
MSVC is and uses that, and failing that it uses a default version that's
currently 1911. So this changes the default if no -fmsc-version flag is
passed and no installed MSVC is detected. (It also changes the default
if -fmsc-version is passed or MSVC is detected, and either indicates
_MSC_VER >= 1911.)
As mentioned in the MSDN article, the Windows SDK header files in
version 10.0.15063.0 (Creators Update or Redstone 2) and earlier
versions do not work correctly with /Zc:twoPhase. If you need to use
these old SDKs with a new clang-cl, explicitly pass /Zc:twoPhase- to get
the old behavior.
Fixes PR43032.
Differential Revision: https://reviews.llvm.org/D66394
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369402 91177308-0d34-0410-b5e6-96231b3b80d8
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Also fixes the documentation for SpaceBeforeAssignmentOperators.
See discussions at https://reviews.llvm.org/D66332
Differential Revision: https://reviews.llvm.org/D66384
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369214 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369161 91177308-0d34-0410-b5e6-96231b3b80d8
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Test commit after obtaining commit access.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369148 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@369099 91177308-0d34-0410-b5e6-96231b3b80d8
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Differential Revision: https://reviews.llvm.org/D60281
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368979 91177308-0d34-0410-b5e6-96231b3b80d8
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This patch adds a line in the release notes about the new clang-cpp library and the CMake option to force clang to link against it.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368874 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
Previously __has_builtin(__builtin_*) would return false for
__builtin_*s that we modeled as keywords rather than as functions
(because they take type arguments). With this patch, all builtins
that are called with function-call-like syntax return true from
__has_builtin (covering __builtin_* and also the __is_* and __has_* type
traits and the handful of similar builtins without such a prefix).
Update the documentation on __has_builtin and on type traits to match.
While doing this I noticed the type trait documentation was out of date
and incomplete; that's fixed here too.
Reviewers: aaron.ballman
Subscribers: jfb, kristina, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D66100
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368785 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This change updates `isDerivedFrom` to support Objective-C classes by
converting it to a polymorphic matcher.
Notes:
The matching behavior for Objective-C classes is modeled to match the
behavior of `isDerivedFrom` with C++ classes. To that effect,
`isDerivedFrom` matches aliased types of derived Objective-C classes,
including compatibility aliases. To achieve this, the AST visitor has
been updated to map compatibility aliases to their underlying
Objective-C class.
`isSameOrDerivedFrom` also provides similar behaviors for C++ and
Objective-C classes. The behavior that
`cxxRecordDecl(isSameOrDerivedFrom("X"))` does not match
`class Y {}; typedef Y X;` is mirrored for Objective-C in that
`objcInterfaceDecl(isSameOrDerivedFrom("X"))` does not match either
`@interface Y @end typedef Y X;` or
`@interface Y @end @compatibility_alias X Y;`.
Test Notes:
Ran clang unit tests.
Reviewers: aaron.ballman, jordan_rose, rjmccall, klimek, alexfh, gribozavr
Reviewed By: aaron.ballman, gribozavr
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60543
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368632 91177308-0d34-0410-b5e6-96231b3b80d8
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D65064, D64635, D64638 pathces solve the issue with macor expansion.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368562 91177308-0d34-0410-b5e6-96231b3b80d8
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See PR40840
Differential Revision: https://reviews.llvm.org/D66059
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368539 91177308-0d34-0410-b5e6-96231b3b80d8
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See PR40840
Differential Revision: https://reviews.llvm.org/D65925
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368507 91177308-0d34-0410-b5e6-96231b3b80d8
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The default behavior of Clang's indirect function call checker will replace
the address of each CFI-checked function in the output file's symbol table
with the address of a jump table entry which will pass CFI checks. We refer
to this as making the jump table `canonical`. This property allows code that
was not compiled with ``-fsanitize=cfi-icall`` to take a CFI-valid address
of a function, but it comes with a couple of caveats that are especially
relevant for users of cross-DSO CFI:
- There is a performance and code size overhead associated with each
exported function, because each such function must have an associated
jump table entry, which must be emitted even in the common case where the
function is never address-taken anywhere in the program, and must be used
even for direct calls between DSOs, in addition to the PLT overhead.
- There is no good way to take a CFI-valid address of a function written in
assembly or a language not supported by Clang. The reason is that the code
generator would need to insert a jump table in order to form a CFI-valid
address for assembly functions, but there is no way in general for the
code generator to determine the language of the function. This may be
possible with LTO in the intra-DSO case, but in the cross-DSO case the only
information available is the function declaration. One possible solution
is to add a C wrapper for each assembly function, but these wrappers can
present a significant maintenance burden for heavy users of assembly in
addition to adding runtime overhead.
For these reasons, we provide the option of making the jump table non-canonical
with the flag ``-fno-sanitize-cfi-canonical-jump-tables``. When the jump
table is made non-canonical, symbol table entries point directly to the
function body. Any instances of a function's address being taken in C will
be replaced with a jump table address.
This scheme does have its own caveats, however. It does end up breaking
function address equality more aggressively than the default behavior,
especially in cross-DSO mode which normally preserves function address
equality entirely.
Furthermore, it is occasionally necessary for code not compiled with
``-fsanitize=cfi-icall`` to take a function address that is valid
for CFI. For example, this is necessary when a function's address
is taken by assembly code and then called by CFI-checking C code. The
``__attribute__((cfi_jump_table_canonical))`` attribute may be used to make
the jump table entry of a specific function canonical so that the external
code will end up taking a address for the function that will pass CFI checks.
Fixes PR41972.
Differential Revision: https://reviews.llvm.org/D65629
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368495 91177308-0d34-0410-b5e6-96231b3b80d8
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`ExprWithCleanups`.
Summary:
The `ExprWithCleanups` node is added to the AST along with the elidable
CXXConstructExpr. If it is the outermost node of the node being matched, ignore
it as well.
Reviewers: gribozavr
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D65944
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368319 91177308-0d34-0410-b5e6-96231b3b80d8
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Also updates corresponding html doc.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368188 91177308-0d34-0410-b5e6-96231b3b80d8
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Summary:
This document includes the description of the ASTImporter from the user/client
perspective.
A subsequent patch will describe the development internals.
Reviewers: a_sidorin, shafik, gamesh411, balazske, a.sidorin
Subscribers: rnkovacs, dkrupp, arphaman, Szelethus, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D65573
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@368009 91177308-0d34-0410-b5e6-96231b3b80d8
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The bots are sad that they're not documented.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@367918 91177308-0d34-0410-b5e6-96231b3b80d8
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The bots are sad that they're not documented.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@367914 91177308-0d34-0410-b5e6-96231b3b80d8
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Reviewers: aaron.ballman
Subscribers: jkorous, dexonsmith, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D65706
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@367889 91177308-0d34-0410-b5e6-96231b3b80d8
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