Summary:
Select instruction annotation in IR PGO uses the edge count to infer the
branch count. It's currently placed in setInstrumentedCounts() where
no all the BB counts have been computed. This leads to wrong branch weights.
Move the annotation after all BB counts are populated.
Reviewers: davidxl
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D25961
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@285128 91177308-0d34-0410-b5e6-96231b3b80d8
Add a weak alias to the renamed Comdat function in IR level instrumentation,
using it's original name. This ensures the same behavior w/ and w/o IR
instrumentation, even for non standard conforming code.
Differential Revision: http://reviews.llvm.org/D25339
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283490 91177308-0d34-0410-b5e6-96231b3b80d8
This reverts commit abe77a118615cd90b0d7f127e4797096afa2b394.
Revert as these changes broke a Chromium buildbot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@283348 91177308-0d34-0410-b5e6-96231b3b80d8
The binder is in a specific section that "reverse" the edges in a
regular dead-stripping: the binder is live as long as a global it
references is live.
This is a big hammer that prevents LLVM from dead-stripping these,
while still allowing linker dead-stripping (with special knowledge
of the section).
Differential Revision: https://reviews.llvm.org/D24673
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282988 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This patch is adding the support for a shadow memory with
dynamically allocated address range.
The compiler-rt needs to export a symbol containing the shadow
memory range.
This is required to support ASAN on windows 64-bits.
Reviewers: kcc, rnk, vitalybuka
Subscribers: zaks.anna, kubabrecka, dberris, llvm-commits, chrisha
Differential Revision: https://reviews.llvm.org/D23354
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282881 91177308-0d34-0410-b5e6-96231b3b80d8
For MIPS '#' is the start of comment line. Therefore we get assembler errors if # is used in the structure names.
Differential: D24334
Reviewed by: zhaoqin
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282141 91177308-0d34-0410-b5e6-96231b3b80d8
This is a follow-up to r281284. Global Variables now can have
!dbg attachements, so ASAN should clone these when generating a
sanitized copy of a global variable.
<rdar://problem/24899262>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281994 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This patch is adding the support for a shadow memory with
dynamically allocated address range.
The compiler-rt needs to export a symbol containing the shadow
memory range.
This is required to support ASAN on windows 64-bits.
Reviewers: kcc, rnk, vitalybuka
Subscribers: kubabrecka, dberris, llvm-commits, chrisha
Differential Revision: https://reviews.llvm.org/D23354
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281908 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
Function __asan_default_options is called by __asan_init before the
shadow memory got initialized. Instrumenting that function may lead
to flaky execution.
As the __asan_default_options is provided by users, we cannot expect
them to add the appropriate function atttributes to avoid
instrumentation.
Reviewers: kcc, rnk
Subscribers: dberris, chrisha, llvm-commits
Differential Revision: https://reviews.llvm.org/D24566
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281503 91177308-0d34-0410-b5e6-96231b3b80d8
The '-asan-use-private-alias’ option (disabled by default) option is currently only enabled for Linux and ELF, but it also works on Darwin and Mach-O. This option also fixes a known problem with LTO on Darwin (https://github.com/google/sanitizers/issues/647). This patch enables the support for Darwin (but still keeps it off by default) and adds the LTO test case.
Differential Revision: https://reviews.llvm.org/D24292
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@281470 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
C allows to jump over variables declaration so lifetime.start can be
avoid before variable usage. To avoid false-positives on such rare cases
we detect them and remove from lifetime analysis.
PR27453
PR28267
Reviewers: eugenis
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D24321
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280907 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
C allows to jump over variables declaration so lifetime.start can be
avoid before variable usage. To avoid false-positives on such rare cases
we detect them and remove from lifetime analysis.
PR27453
PR28267
Reviewers: eugenis
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D24321
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280880 91177308-0d34-0410-b5e6-96231b3b80d8
This reverts commit r280796, as it broke the AArch64 bots for no reason.
The tests were passing and we should try to keep them passing, so a proper
review should make that happen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280802 91177308-0d34-0410-b5e6-96231b3b80d8
-fprofile-dir=path allows the user to specify where .gcda files should be
emitted when the program is run. In particular, this is the first flag that
causes the .gcno and .o files to have different paths, LLVM is extended to
support this. -fprofile-dir= does not change the file name in the .gcno (and
thus where lcov looks for the source) but it does change the name in the .gcda
(and thus where the runtime library writes the .gcda file). It's different from
a GCOV_PREFIX because a user can observe that the GCOV_PREFIX_STRIP will strip
paths off of -fprofile-dir= but not off of a supplied GCOV_PREFIX.
To implement this we split -coverage-file into -coverage-data-file and
-coverage-notes-file to specify the two different names. The !llvm.gcov
metadata node grows from a 2-element form {string coverage-file, node dbg.cu}
to 3-elements, {string coverage-notes-file, string coverage-data-file, node
dbg.cu}. In the 3-element form, the file name is already "mangled" with
.gcno/.gcda suffixes, while the 2-element form left that to the middle end
pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@280306 91177308-0d34-0410-b5e6-96231b3b80d8
