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281 Commits

Author SHA1 Message Date
Bill Wendling a337414ff4 Remove the LTO stuff from the profile_rt library's Makefile. 
llvm-svn: 133042
 2011-06-15 04:56:13 +00:00
Bill Wendling c8be05ace5 Add compatibility version when compiling the Apple way. 
<rdar://problem/9600408>

llvm-svn: 132929
 2011-06-13 20:14:37 +00:00
Francois Pichet 54577dec61 Fix MSVC warning regarding mkdir function usage. 
llvm-svn: 132109
 2011-05-26 04:55:20 +00:00
Francois Pichet f83114dceb Fix 3 MSVC warnings: 
'void (__cdecl *)()' differs in parameter lists from 'void (__cdecl *)(void)'

atexit really expects a "void f(void)" function.

llvm-svn: 132061
 2011-05-25 16:32:33 +00:00
Nick Lewycky a7028848a1 The computation of string length is not that complicated. Fix it, again. :) 
llvm-svn: 130967
 2011-05-05 23:52:18 +00:00
Nick Lewycky 4f9c367f0b Update the gcov version used slightly, to make it stop causing modern gcov's to 
crash.

llvm-svn: 130911
 2011-05-05 02:46:38 +00:00
Nick Lewycky 892e9934ba Create the parent directories to place the .gcda files in if they don't exist. 
That's kinda weird because the .gcno files are supposed to already be there,
but libgcov does this and somehow Google has managed to depend on it.

llvm-svn: 130879
 2011-05-04 22:34:29 +00:00
Nick Lewycky 0e5667bc89 Fix crash when not setting GCOV_PREFIX. 
llvm-svn: 130834
 2011-05-04 03:58:45 +00:00
NAKAMURA Takumi 7f7bf595dd runtime/libprofile/PathProfiling.c: Don't use // comment in C source. 
llvm-svn: 130589
 2011-04-30 03:53:56 +00:00
Daniel Dunbar 080d98d3b2 win32: Include DataTypes.h instead of stdint.h to try and fix a Win32 build 
issue.

llvm-svn: 130530
 2011-04-29 18:58:57 +00:00
Daniel Dunbar eeb2cbce80 Cleanup some DOS newlines. 
llvm-svn: 130529
 2011-04-29 18:58:55 +00:00
Francois Pichet dbad1d1599 Unbreak the MSVC build: 
- unistd.h doesn't exist with MSVC
  - inline must be __inline in Microsoft C
  - atexit cannot take a function declared as void f(), must be void f(void).

llvm-svn: 130490
 2011-04-29 08:56:07 +00:00
Nick Lewycky 61aed87a49 Rename profile_rt.so to libprofile_rt.so under configure+make (it already was 
under cmake).

Add libprofile_rt.a so that we can tell clang to link against it in --coverage
mode. Also turn it on by default in cmake builds.

Oscar, this touches a change you made for EXCLUDE_FROM_ALL support -- I think
I've done the right thing, but please let me know (or fix and commit) if not!

llvm-svn: 130470
 2011-04-29 02:12:06 +00:00
Nick Lewycky 6aa79492a5 Only read *predecessor once so as to fix a theoretical issue where it changes 
between two reads (threading).

Fix an off-by-one in the indirect counter table that I meant to revert after an
earlier experiment. Whoops!

Implement GCOV_PREFIX. Doesn't handle GCOV_PREFIX_STRIP yet.

Fix an off-by-one in string emission. Extra whoops!

Tolerate DISubprograms that have null Function*'s attached to them. I don't yet
understand what this means, but it happens when you have a global static with
a non-trivial constructor/destructor.

Fix a crash on switch statements with a single successor (default-only).

llvm-svn: 130443
 2011-04-28 21:35:49 +00:00
Nick Lewycky 6fac9bcf67 Use static inline to do the right thing when built in C99 mode. Of course, 
C89 doesn't have an inline keyword.

llvm-svn: 130279
 2011-04-27 03:22:17 +00:00
Oscar Fuentes 638aaecc4d Honor LLVM_BUILD_RUNTIME. 
llvm-svn: 130199
 2011-04-26 14:55:27 +00:00
Nick Lewycky 68d2218978 Add cmakefiles to build profile_rt.so! 
llvm-svn: 130191
 2011-04-26 05:48:41 +00:00
Nick Lewycky c58d293a6f Rename everything to follow LLVM style ... I think. 
Add support for switch and indirectbr edges. This works by densely numbering
all blocks which have such terminators, and then separately numbering the
possible successors. The predecessors write down a number, the successor knows
its own number (as a ConstantInt) and sends that and the pointer to the number
the predecessor wrote down to the runtime, who looks up the counter in a
per-function table.

Coverage data should now be functional, but I haven't tested it on anything
other than my 2-file synthetic test program for coverage.

llvm-svn: 130186
 2011-04-26 03:54:16 +00:00
Benjamin Kramer c186dcf2c5 Write out uint64_t as i{0..32},i{33..64} instead of i{0..32},0. 
llvm-svn: 129638
 2011-04-16 10:25:32 +00:00
Nick Lewycky 303b5e21fc Don't use C++ comments in C code. 
llvm-svn: 129637
 2011-04-16 04:25:36 +00:00
Nick Lewycky 966edd068f Rename LineProfiling to GCOVProfiling to more accurately represent what it 
does. Also mostly implement it. Still a work-in-progress, but generates legal
output on crafted test cases.

llvm-svn: 129630
 2011-04-16 01:20:23 +00:00
Chris Lattner 0ab5e2cded Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
Benjamin Kramer aabc142fce Fix format string warning. 
llvm-svn: 129467
 2011-04-13 20:41:43 +00:00
Nick Lewycky a8150b1c90 Use %ull here. 
llvm-svn: 129423
 2011-04-13 01:05:45 +00:00
Nick Lewycky 2b473f8c85 Print our uint64_t with the more portable (C99 and C++0x) %PRIu64 format 
specifier.

llvm-svn: 129384
 2011-04-12 20:06:50 +00:00
Nick Lewycky 3c974a6bde The counters are unsigned. 
llvm-svn: 129380
 2011-04-12 19:35:45 +00:00
Nick Lewycky 9d60e373cf Add support for line profiling. Very work-in-progress. 
Use debug info in the IR to find the directory/file:line:col. Each time that location changes, bump a counter.

Unlike the existing profiling system, we don't try to look at argv[], and thusly don't require main() to be present in the IR. This matches GCC's technique where you specify the profiling flag when producing each .o file.

The runtime library is minimal, currently just calling printf at program shutdown time. The API is designed to make it possible to emit GCOV data later on.

llvm-svn: 129340
 2011-04-12 01:06:09 +00:00
Andrew Trick 24f5ff0f23 Implementation of path profiling. 
Modified patch by Adam Preuss.

This builds on the existing framework for block tracing, edge profiling and optimal edge profiling.
See -help-hidden for new flags.
For documentation, see the technical report "Implementation of Path Profiling..." in llvm.org/pubs.

llvm-svn: 124515
 2011-01-29 01:09:53 +00:00
Mikhail Glushenkov d2b5336ae7 Rename 'libprofile/exported_symbols.lst' to 'libprofile/libprofile.exports'. 
Makefile.rules assumes that all EXPORTED_SYMBOL_FILEs have the .exports
extension.

llvm-svn: 112964
 2010-09-03 15:42:45 +00:00
Dan Gohman aa4d9ea465 Delete a blank line. 
llvm-svn: 101459
 2010-04-16 13:32:55 +00:00
Dan Gohman ff9ecb2824 Make the export files absolute paths, and change Makefile.rules 
to expect them this way, to fix srcdir!=objdir builds.

llvm-svn: 101414
 2010-04-15 23:08:00 +00:00
Daniel Dunbar 73fa324609 Don't use absolute path for EXPORTED_SYMBOL_FILE, this breaks under the new 
system.

llvm-svn: 101404
 2010-04-15 21:57:43 +00:00
Anton Korobeynikov 839cdaa70a Revert r100896 and around - this breaks the only mingw32 buildbot we have. 
llvm-svn: 101387
 2010-04-15 19:51:42 +00:00
Chris Lattner 74e2ef68b9 suck the propagating "has dynamic libs" check into a single makefile 
variable TARGET_HAS_DYNAMIC_LIBS

llvm-svn: 100896
 2010-04-09 20:51:47 +00:00
Chris Lattner c86cdc7d47 add minix support, patch by Kees van Reeuwijk! PR6797 
llvm-svn: 100895
 2010-04-09 20:45:04 +00:00
Chris Lattner 1e93b96117 disable this for mingw as well, we really need a 'has no dynamic linking' predicate. 
llvm-svn: 97882
 2010-03-06 18:54:37 +00:00
Chris Lattner 6dbf5cc64c disable libprofile on cygwin, patch by Aaron Gray. 
llvm-svn: 97772
 2010-03-05 01:00:34 +00:00
Daniel Dunbar e615b5fe4d Switch .bc/.ll Makefile rules to use LLVM{CC,CXX} instead of LLVMG{CC,XX} 
llvm-svn: 96936
 2010-02-23 10:28:06 +00:00
Chris Lattner 351e22aa36 remove the random sampling framework, which is not maintained anymore. 
If there is interest, it can be resurrected from SVN.  PR4912.

llvm-svn: 92422
 2010-01-02 20:07:03 +00:00
Andreas Neustifter 759094e323 OptimalEdgeProfiling: Creation of profiles. 
This adds the instrumentation and runtime part of OptimalEdgeProfiling.

llvm-svn: 80712
 2009-09-01 19:03:44 +00:00
Andreas Neustifter 7026421d61 Read Makefile.config before using LLVMGCC. 
See http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090824/085828.html

llvm-svn: 80372
 2009-08-28 16:13:45 +00:00
Daniel Dunbar 2ece038e6e Another NO_RUNTIME_LIBRARIES tweak... 
llvm-svn: 80331
 2009-08-28 03:06:28 +00:00
Daniel Dunbar e45cdcdca2 Tweak NO_RUNTIME_LIBS. 
llvm-svn: 80330
 2009-08-28 02:20:39 +00:00
Daniel Dunbar e36c50f163 Don't build runtime libraries in an Apple style build. 
llvm-svn: 80303
 2009-08-27 23:43:28 +00:00
Andreas Neustifter d749cbd9e2 Add llvm_start_edge_profiling to exported symbols for libprofile_rt. 
llvm-svn: 79944
 2009-08-24 21:41:37 +00:00
Daniel Dunbar 4d28366342 Don't try to build .bc version of libprofile if LLVMGCC isn't available. 
llvm-svn: 79514
 2009-08-20 05:12:55 +00:00
Daniel Dunbar c2fdebe8af Remove cruft for installing runtime/ libraries directly into the LLVMGCCDIR; 
that is totally bogus.

llvm-svn: 79512
 2009-08-20 05:02:41 +00:00
Gordon Henriksen 3de1a09c86 Drop toy GC runtime. 
llvm-svn: 65801
 2009-03-02 03:46:48 +00:00
Gordon Henriksen 520981b62f Fixing the stack walker. 
llvm-svn: 46302
 2008-01-24 05:16:36 +00:00
Gordon Henriksen 6047b6e140 With this patch, the LowerGC transformation becomes the 
ShadowStackCollector, which additionally has reduced overhead with
no sacrifice in portability.

Considering a function @fun with 8 loop-local roots,
ShadowStackCollector introduces the following overhead
(x86):

; shadowstack prologue
        movl    L_llvm_gc_root_chain$non_lazy_ptr, %eax
        movl    (%eax), %ecx
        movl    $___gc_fun, 20(%esp)
        movl    $0, 24(%esp)
        movl    $0, 28(%esp)
        movl    $0, 32(%esp)
        movl    $0, 36(%esp)
        movl    $0, 40(%esp)
        movl    $0, 44(%esp)
        movl    $0, 48(%esp)
        movl    $0, 52(%esp)
        movl    %ecx, 16(%esp)
        leal    16(%esp), %ecx
        movl    %ecx, (%eax)

; shadowstack loop overhead
        (none)

; shadowstack epilogue
        movl    48(%esp), %edx
        movl    %edx, (%ecx)

; shadowstack metadata
        .align  3
___gc_fun:                              # __gc_fun
        .long   8
        .space  4

In comparison to LowerGC:

; lowergc prologue
        movl    L_llvm_gc_root_chain$non_lazy_ptr, %eax
        movl    (%eax), %ecx
        movl    %ecx, 48(%esp)
        movl    $8, 52(%esp)
        movl    $0, 60(%esp)
        movl    $0, 56(%esp)
        movl    $0, 68(%esp)
        movl    $0, 64(%esp)
        movl    $0, 76(%esp)
        movl    $0, 72(%esp)
        movl    $0, 84(%esp)
        movl    $0, 80(%esp)
        movl    $0, 92(%esp)
        movl    $0, 88(%esp)
        movl    $0, 100(%esp)
        movl    $0, 96(%esp)
        movl    $0, 108(%esp)
        movl    $0, 104(%esp)
        movl    $0, 116(%esp)
        movl    $0, 112(%esp)

; lowergc loop overhead
        leal    44(%esp), %eax
        movl    %eax, 56(%esp)
        leal    40(%esp), %eax
        movl    %eax, 64(%esp)
        leal    36(%esp), %eax
        movl    %eax, 72(%esp)
        leal    32(%esp), %eax
        movl    %eax, 80(%esp)
        leal    28(%esp), %eax
        movl    %eax, 88(%esp)
        leal    24(%esp), %eax
        movl    %eax, 96(%esp)
        leal    20(%esp), %eax
        movl    %eax, 104(%esp)
        leal    16(%esp), %eax
        movl    %eax, 112(%esp)

; lowergc epilogue
        movl    48(%esp), %edx
        movl    %edx, (%ecx)

; lowergc metadata
        (none)

llvm-svn: 45670
 2008-01-07 01:30:53 +00:00