Commit Graph

44 Commits

Author SHA1 Message Date
Vedant Kumar d7c9336a84 [profile] Port the runtime to Solaris (retry)
This includes a few nice bits of refactoring (e.g splitting out the
exclusive locking code into a common utility).

Hopefully the Windows support is fixed now.

Patch by Rainer Orth!

Differential Revision: https://reviews.llvm.org/D40944

llvm-svn: 320731
2017-12-14 19:01:04 +00:00
Vedant Kumar e8e8599ade Revert "(HEAD -> master, origin/master, origin/HEAD) [profile] Port the runtime to Solaris"
This reverts commit r320726. It looks like flock isn't available on
Windows:

http://lab.llvm.org:8011/builders/sanitizer-windows/builds/21317/steps/build%20compiler-rt/logs/stdio

llvm-svn: 320728
2017-12-14 18:50:13 +00:00
Vedant Kumar 5b0d5b45a2 [profile] Port the runtime to Solaris
This includes a few nice bits of refactoring (e.g splitting out the
exclusive locking code into a common utility).

Patch by Rainer Orth!

Differential Revision: https://reviews.llvm.org/D40944

llvm-svn: 320726
2017-12-14 18:43:14 +00:00
Vedant Kumar ff3227e77d [profile] Move __llvm_profile_filename into a separate object
Users can specify the path a raw profile is written to by passing
-fprofile-instr-generate=<path>, but this functionality broke on Darwin
after __llvm_profile_filename was made weak [1], resulting in profiles
being written to "default.profraw" even when <path> is specified.

The situation is that instrumented programs provide a weak definition of
__llvm_profile_filename, which conflicts with a weak redefinition
provided by the profiling runtime.

The linker appears to pick the 'winning' definition arbitrarily: on
Darwin, it usually prefers the larger definition, which is probably why
the instrprof-override-filename.c test has been passing.

The fix is to move the runtime's definition into a separate object file
within the archive. This means that the linker won't "see" the runtime's
definition unless the user program has not provided one. I couldn't
think of a great way to test this other than to mimic the Darwin
failure: use -fprofile-instr-generate=<some-small-path>.

Testing: check-{clang,profile}, modified instrprof-override-filename.c.

[1] [Profile] deprecate __llvm_profile_override_default_filename
https://reviews.llvm.org/D22613
https://reviews.llvm.org/D22614

Differential Revision: https://reviews.llvm.org/D34797

llvm-svn: 306710
2017-06-29 17:42:24 +00:00
Chris Bieneman 21395f9839 [CMake] Connect Compiler-RT targets to LLVM Runtimes directory
This patch builds on LLVM r279776.

In this patch I've done some cleanup and abstracted three common steps runtime components have in their CMakeLists files, and added a fourth.

The three steps I abstract are:

(1) Add a top-level target (i.e asan, msan, ...)
(2) Set the target properties for sorting files in IDE generators
(3) Make the compiler-rt target depend on the top-level target

The new step is to check if a command named "runtime_register_component" is defined, and to call it with the component name.

The runtime_register_component command is defined in llvm/runtimes/CMakeLists.txt, and presently just adds the component to a list of sub-components, which later gets used to generate target mappings.

With this patch a new workflow for runtimes builds is supported. The new workflow when building runtimes from the LLVM runtimes directory is:

> cmake [...]
> ninja runtimes-configure
> ninja asan

The "runtimes-configure" target builds all the dependencies for configuring the runtimes projects, and runs CMake on the runtimes projects. Running the runtimes CMake generates a list of targets to bind into the top-level CMake so subsequent build invocations will have access to some of Compiler-RT's targets through the top-level build.

Note: This patch does exclude some top-level targets from compiler-rt libraries because they either don't install files (sanitizer_common), or don't have a cooresponding `check` target (stats).
llvm-svn: 279863
2016-08-26 20:52:22 +00:00
Etienne Bergeron ab42f4ddba [compiler-rt] Fix VisualStudio virtual folders layout
Summary:
This patch is a refactoring of the way cmake 'targets' are grouped.
It won't affect non-UI cmake-generators.

Clang/LLVM are using a structured way to group targets which ease
navigation through Visual Studio UI. The Compiler-RT projects
differ from the way Clang/LLVM are grouping targets.

This patch doesn't contain behavior changes.

Reviewers: kubabrecka, rnk

Subscribers: wang0109, llvm-commits, kubabrecka, chrisha

Differential Revision: http://reviews.llvm.org/D21952

llvm-svn: 275111
2016-07-11 21:51:56 +00:00
Reid Kleckner 652d70f3e1 Fix most MSVC warnings in compiler-rt profiling library
Here's the warnings and how they were fixed:

- InstrProfilingUtil.c(110): warning C4013: '_open_osfhandle' undefined; assuming extern returning int

Include io.h to get the prototype.

- warning C4005: 'FILE_MAP_EXECUTE': macro redefinition

Stop trying to support pre-XP versions of Windows, don't attempt to
define this macro.

- InstrProfilingWriter.c(271): warning C4221: nonstandard extension used: 'Data': cannot be initialized using address of automatic variable 'Header'
- InstrProfilingWriter.c(275): warning C4221: nonstandard extension used: 'Data': cannot be initialized using address of automatic variable 'Zeroes'

Turn this warning off. This is definitely legal in C++, all compilers
accept it, and I only have room for half of one language standard in my
brain.

- InstrProfilingValue.c(320): warning C4113: 'uint32_t (__cdecl *)()' differs in parameter lists from 'uint32_t (__cdecl *)(void)'

Fix this with an explicit (void) in the prototype.

- InstrProfilingMerge.c.obj : warning LNK4006: _VPMergeHook already defined in InstrProfilingMergeFile.c.obj; second definition ignored

Last remaining warning. This is from linking a selectany definition with
a strong definition. We need to sort out weak symbols in compiler-rt in
general, though.

llvm-svn: 273026
2016-06-17 18:12:50 +00:00
Xinliang David Li f88d3b9afb [profile] Pass extra build flags (feature enabling macros) to Darwin build
Differential Revision: http://reviews.llvm.org/D21119

llvm-svn: 272162
2016-06-08 16:21:35 +00:00
Xinliang David Li 5cd1f94d4f [profile] in-process mergeing support (part-2)
(Part-1 merging API is in profile runtime)

This patch implements a portable file opening API
with exclusive access for the process. In-process
profile merge requires profile file update to be
atomic/fully sychronized.

llvm-svn: 271864
2016-06-06 03:17:58 +00:00
Xinliang David Li dd12e9a8c0 [PGO] Add API for profile merge from buffer
Differential Revision: http://reviews.llvm.org/D17831

llvm-svn: 262644
2016-03-03 18:54:46 +00:00
Peter Collingbourne f6594a06f7 profile: Do not pass -fPIC on Windows.
Unbreaks clang-cl build (cl warns on this flag, clang-cl errors on it).

llvm-svn: 257136
2016-01-08 02:03:25 +00:00
Nathan Slingerland 2517253184 [compiler-rt] Fix empty translation unit warning
Change to not compile in WindowsMMap.c on anything except WIN32.

llvm-svn: 256947
2016-01-06 16:55:21 +00:00
Nathan Slingerland ba86c9279b [PGO] Enable building compiler-rt profile support library on Windows
Summary: This change configures Windows builds to build the complier-rt profile support library (clang_rt.profile-i386.lib). Windows API incompatibilities in the compiler-rt profile lib are also fixed.

Reviewers: davidxl, dnovillo

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D15830

llvm-svn: 256848
2016-01-05 17:27:01 +00:00
Xinliang David Li 449133d8b4 [PGO] Split value profiling runtime into its own file
Value profile runtime depends on libc which breaks
buffer API implemenation with current file organization.

Test case is also updated to check more symbols.

llvm-svn: 255294
2015-12-10 20:24:09 +00:00
Xinliang David Li bf56c0a512 [PGO] Add cmake check to determine atomics op availability
This allows the profile runtime to pick the right impl
for cmp&swap for a given target.

Differential Revision: http://reviews.llvm.org/D15248

llvm-svn: 255173
2015-12-09 22:46:49 +00:00
Xinliang David Li 1d8d46ae39 [PGO] Refactor File and Buffer API profile writing code
With this change, Buffer API and File API implementations
are unified.

Differential Revision: http://reviews.llvm.org/D14692

llvm-svn: 253500
2015-11-18 21:08:03 +00:00
Xinliang David Li b6c81d2b92 [PGO] Ensure profile section symbols are created (linux)
- This is to handle a corner case where profile lib is linked
  in but non of the modules are instrumented (On linux, since
  we avoided the overhead to emit runtime hook use functions so
  this is the side effect of that size optimization).
- Added a profile runtime test case to cover all scenarios of
  shared library builds. 

Differential Revision: http://reviews.llvm.org/D14468

llvm-svn: 253098
2015-11-13 22:33:07 +00:00
Xinliang David Li 854dad77ec Rollback 252570 for further investigation
llvm-svn: 252575
2015-11-10 00:58:22 +00:00
Xinliang David Li 7efc57bc19 [PGO] Add LLVM main include dir to profile runtime build
Runtime code implicitly depends on the defintions and const
values defined in LLVM proper, but currently such dependency
is made implicitly by duplicating code across two dirs. As 
part of the PGO cleanup effort, there will be changes to share
common sources. This is a preparation patch to enable it (NFC).

Differential Revision: http://reviews.llvm.org/D14487

llvm-svn: 252570
2015-11-10 00:35:37 +00:00
Xinliang David Li f556a7e3c3 [PGO]: Eliminate calls to __llvm_profile_register_function for Linux.
On Linux, the profile runtime can use __start_SECTNAME and __stop_SECTNAME
symbols defined by the linker to locate the start and end location of
a named section (with C name). This eliminates the need for instrumented
binary to call __llvm_profile_register_function during start-up time.

llvm-svn: 250200
2015-10-13 18:40:00 +00:00
Chris Bieneman b1ff6e4260 [CMake] [Darwin] Add and populate PROFILE_SUPPORTED_OS to enable building libclang_rt.profile for iOS.
llvm-svn: 248948
2015-09-30 21:23:22 +00:00
Chris Bieneman d160260681 [CMake] merge add_compiler_rt_runtime and add_compiler_rt_darwin_runtime into a single function
Summary: This refactoring moves much of the Apple-specific behavior into a function in AddCompilerRT. The next cleanup patch will remove more of the if(APPLE) checks in the outlying CMakeLists.

This patch adds a bunch of new functionality to add_compiler_rt_runtime so that the target names don't need to be reconstructed outside the call. It also updates some of the call sites to exercise the new functionality, but does not update all uses fully. Subsequent patches will further update call sites and move to using the new features.

Reviewers: filcab, bogner, kubabrecka, zaks.anna, glider, samsonov

Subscribers: beanz, rengolin, llvm-commits

Differential Revision: http://reviews.llvm.org/D12292

llvm-svn: 245970
2015-08-25 19:53:09 +00:00
Chris Bieneman d8b76ce3bf [CMake] Backing out part of r245317. Turns out safestack and profile don't work correctly on the iOS simulator and enabling it breaks tests.
llvm-svn: 245326
2015-08-18 18:35:18 +00:00
Chris Bieneman 201d065259 [CMake] Refactoring add_compiler_rt functions for darwin runtimes.
Summary: This patch consolidates add_compiler_rt_osx_static_runtime and add_compiler_rt_darwin_dynamic_runtime into a single new function add_compiler_rt_darwin_runtime.

Reviewers: filcab, samsonov, bogner

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D12106

llvm-svn: 245317
2015-08-18 17:32:18 +00:00
Diego Novillo eae951415e Add support for generating profiles in a given directory.
When the file is initialized, this patch checks whether the path
specifies a directory. If so, it creates the directory tree before
truncating the file.

Use default.profdata instead of pgo-data for default indexed profile name.

llvm-svn: 241824
2015-07-09 17:21:52 +00:00
Filipe Cabecinhas 7af0a1cb84 CMake: Stop using LLVM's custom parse_arguments. NFC
Summary:
Use CMake's cmake_parse_arguments() instead.
It's called in a slightly different way, but supports all our use cases.
It's in CMake 2.8.8, which is our minimum supported version.

CMake 3.0 doc (roughly the same. No direct link to 2.8.8 doc):
http://www.cmake.org/cmake/help/v3.0/module/CMakeParseArguments.html?highlight=cmake_parse_arguments

Since I was already changing these calls, I changed ARCH and LIB into
ARCHS and LIBS to make it more clear that they're lists of arguments.

Reviewers: eugenis, samsonov, beanz

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D10529

llvm-svn: 240120
2015-06-19 03:39:24 +00:00
Alexey Samsonov cbbd2fd8d6 [Profile] Always build profile runtime library with -fPIC.
This change removes libclang_rt.profile-pic-<arch>.a version of
profile runtime. Instead, it's sufficient to always build
libclang_rt.profile-<arch>.a with -fPIC, as it can be linked into
both executables and shared objects.

llvm-svn: 221952
2014-11-14 00:16:26 +00:00
Duncan P. N. Exon Smith 870b77cd4d InstrProf: Create a PIC version of the profile runtime
These tests were XPASS-ing on Linux bots creating Mach-O, which makes
sense, since the real difference is the object format.

I'm hoping a short-term fix to get these tests passing on ELF is to
create two copies of the runtime -- one built with -fPIC, and one
without.  A follow-up patch will change clang's driver to pick between
them depending on whether `-shared` is specified.

llvm-svn: 208947
2014-05-16 04:07:09 +00:00
Alexey Samsonov 01be4280be [profile] Flatten profile runtime - define platform-specific code in sources, not in the build system
llvm-svn: 206915
2014-04-22 18:49:32 +00:00
Duncan P. N. Exon Smith ae2f0bbcf1 InstrProf: Add simple compiler-rt test
Add the test infrastructure for testing lib/profile and a single test.
This initial commit only enables the tests on Darwin, but they'll be
enabled on Linux soon after.

<rdar://problem/16458307>

llvm-svn: 205256
2014-03-31 22:45:37 +00:00
Alexey Samsonov 78a8435fd6 [CMake] Rename add_compiler_rt_static_runtime to add_compiler_rt_runtime.
Soon there will be an option to build compiler-rt parts as shared libraries
on Linux. Extracted from http://llvm-reviews.chandlerc.com/D3042
by Yuri Gribov.

llvm-svn: 205183
2014-03-31 13:45:36 +00:00
Duncan P. N. Exon Smith be0a5e176b InstrProf: Reorganize files; no functionality change
Move functions around to prepare for some other changes.

  - Merge InstrProfilingExtras.h with InstrProfiling.h.  There's no
    benefit to having these split.

  - Rename InstrProfilingExtras.c to InstrProfilingFile.c.

  - Split actual buffer writing code out of InstrProfiling.c into
    InstrProfilingBuffer.c.

  - Drive-by corrections of a couple of header comments.

<rdar://problem/15943240>

llvm-svn: 204497
2014-03-21 18:29:15 +00:00
Duncan P. N. Exon Smith 775c178a90 PGO: Add explicit static initialization
Instead of relying on explicit static initialization from translation
units, create a new file, InstrProfilingRuntime.cc, with an
__llvm_pgo_runtime variable.  After this commit (and its pair in clang),
the driver will create a use of this variable.  Unless the user defines
their own version, the new object file will get pulled in, including
that C++ static initialization that calls
__llvm_pgo_register_write_atexit.

The result is that, at least on Darwin, static initialization typically
consists of a single function call, which registers a writeout functino
atexit.  Furthermore, users can skip even this behaviour by defining
their own __llvm_pgo_runtime.

<rdar://problem/15943240>

llvm-svn: 204380
2014-03-20 19:23:53 +00:00
Duncan P. N. Exon Smith 9cee5e0e92 PGO: Moving files for clarity
<rdar://problem/15943240>

llvm-svn: 204373
2014-03-20 18:43:09 +00:00
Duncan P. N. Exon Smith ecf2256dfe PGO: Implement Darwin linker magic for instrumentation
Use Darwin linker magic to find bounds of instrumentation data sections
at link time instead of runtime.

<rdar://problem/15943240>

llvm-svn: 204302
2014-03-20 03:57:33 +00:00
Duncan P. N. Exon Smith da0de8a237 PGO: Split out initialization of section bounds
Currently we register instrumentation data at runtime to determine the
bounds of the sections where the data lives.  Soon we'll implement
platform-specific linker magic to determine this at link time.

Move this logic to a separate file, so that our build system can choose
the correct platform-specific code.

No functionality change intended.

<rdar://problem/15943240>

llvm-svn: 204299
2014-03-20 03:23:10 +00:00
Duncan P. N. Exon Smith 8353a26e85 PGO: Splitting implementation files; no functionality change
Split implementation files along a uses-libc/shouldn't-use-libc
boundary.

  - InstrProfiling.h is a shared header.

  - InstrProfiling.c provides an API to extract profiling data from the
    runtime, but avoids the use of libc.  Currently this is a lie:
    __llvm_pgo_write_buffer() uses `FILE*` and related functions.  It
    will be updated soon to write to a `char*` buffer instead.

  - InstrProfilingExtras.c provides a more convenient API for
    interfacing with the profiling runtime, but has logic that does (and
    will continue to) use libc.

<rdar://problem/15943240>

llvm-svn: 204268
2014-03-19 22:10:27 +00:00
Alexey Samsonov 63a4af7346 [CMake] Add top-level target for each compiler-rt library, and add 'compiler-rt' target encompassing them all.
llvm-svn: 201556
2014-02-18 09:33:45 +00:00
Renato Golin 66e2b70e59 Enable compilation of RT on ARM
Adding the ARM RT sources to the CMake files, and enabling some
sanitizers to also build on ARM. This is far from supported or
production quality, but enabling it to build will get us errors
that we can actually fix.

Having said that, the Compiler-RT and the Asan libraries are
know to work on some variations of ARM.

llvm-svn: 200546
2014-01-31 14:25:58 +00:00
Justin Bogner 65bb804f05 profile: Rudimentary suppport for PGO instrumentation
This is fairly minimal support for instrumentation based PGO. The data
format is inefficient, and the output file name is hardcoded to
pgo-data.

llvm-svn: 198638
2014-01-06 22:27:03 +00:00
Chandler Carruth 9fcb41d0fa Remove the sysroot restriction from building GCDAProfiling.c.
We really need the C standard library to be available to implement the
profiling runtime library reasonably, and replicating everything in the
SDKs tree really isn't addressing any problems we have. Notably, all of
the sanitizer runtimes take the same approach, and this isn't a library
which could end up in a bootstrapping problem where the system headers
aren't even available.

This will hopefully prevent subsequent changes which start using various
other bits of C standard library to make things more debuggable.

llvm-svn: 184798
2013-06-25 00:37:28 +00:00
Alexey Samsonov 6210e1f9ff Add basic support for building profile compiler-rt library in CMake build on Darwin
llvm-svn: 177870
2013-03-25 14:20:11 +00:00
Alexey Samsonov 45d2f96582 Don't use --sysroot to linux SDK when building libprofile - SDK on Linux seems to be incomplete.
llvm-svn: 177396
2013-03-19 13:34:23 +00:00
Alexey Samsonov 4c17c1b157 Support CMake build of profile runtime library on Linux
llvm-svn: 177382
2013-03-19 09:17:35 +00:00