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277 Commits

Author SHA1 Message Date
Nick Lewycky
eef7bead41 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
c537bf5a97 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
e3e47cc4d8 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
75424d52d7 Fix crash when not setting GCOV_PREFIX. 
llvm-svn: 130834
 2011-05-04 03:58:45 +00:00
NAKAMURA Takumi
f485b6e3a8 runtime/libprofile/PathProfiling.c: Don't use // comment in C source. 
llvm-svn: 130589
 2011-04-30 03:53:56 +00:00
Daniel Dunbar
64d3760882 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
33083542c4 Cleanup some DOS newlines. 
llvm-svn: 130529
 2011-04-29 18:58:55 +00:00
Francois Pichet
4c0e0098a5 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
ea1dbad689 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
40c59f95d7 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
0a9ef78096 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
246a11f21c Honor LLVM_BUILD_RUNTIME. 
llvm-svn: 130199
 2011-04-26 14:55:27 +00:00
Nick Lewycky
6a72236e5f Add cmakefiles to build profile_rt.so! 
llvm-svn: 130191
 2011-04-26 05:48:41 +00:00
Nick Lewycky
d4d9c257e0 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
c7d15fb261 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
e704042077 Don't use C++ comments in C code. 
llvm-svn: 129637
 2011-04-16 04:25:36 +00:00
Nick Lewycky
9aeaafc27a 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
0304b82f80 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
41b2c100c4 Fix format string warning. 
llvm-svn: 129467
 2011-04-13 20:41:43 +00:00
Nick Lewycky
0ec72ba684 Use %ull here. 
llvm-svn: 129423
 2011-04-13 01:05:45 +00:00
Nick Lewycky
b461b6de06 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
ec33cecdf0 The counters are unsigned. 
llvm-svn: 129380
 2011-04-12 19:35:45 +00:00
Nick Lewycky
cbe911f7d8 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
72f17d97f3 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
70c650839b 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
c2f8d14811 Delete a blank line. 
llvm-svn: 101459
 2010-04-16 13:32:55 +00:00
Dan Gohman
55f814fdc4 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
411f700614 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
a1cca8a579 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
7ecde540fb 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
9d77e5ba47 add minix support, patch by Kees van Reeuwijk! PR6797 
llvm-svn: 100895
 2010-04-09 20:45:04 +00:00
Chris Lattner
eb142908d7 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
c5bf78ce52 disable libprofile on cygwin, patch by Aaron Gray. 
llvm-svn: 97772
 2010-03-05 01:00:34 +00:00
Daniel Dunbar
31196b6778 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
07a1a284d3 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
683bc5306c 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
398f646dce 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
2c92414183 Another NO_RUNTIME_LIBRARIES tweak... 
llvm-svn: 80331
 2009-08-28 03:06:28 +00:00
Daniel Dunbar
8d3f3f69f2 Tweak NO_RUNTIME_LIBS. 
llvm-svn: 80330
 2009-08-28 02:20:39 +00:00
Daniel Dunbar
b06129b062 Don't build runtime libraries in an Apple style build. 
llvm-svn: 80303
 2009-08-27 23:43:28 +00:00
Andreas Neustifter
d9b49e77dd Add llvm_start_edge_profiling to exported symbols for libprofile_rt. 
llvm-svn: 79944
 2009-08-24 21:41:37 +00:00
Daniel Dunbar
2e82bcd546 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
4889837fc6 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
ba66b036b5 Drop toy GC runtime. 
llvm-svn: 65801
 2009-03-02 03:46:48 +00:00
Gordon Henriksen
639468e763 Fixing the stack walker. 
llvm-svn: 46302
 2008-01-24 05:16:36 +00:00
Gordon Henriksen
db4f51e1b9 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
Chris Lattner
7a9b0bf0eb remove attribution from a variety of miscellaneous files. 
llvm-svn: 45425
 2007-12-29 22:59:10 +00:00
Chris Lattner
6aece93d5c remove attributions from the rest of the llvm makefiles. 
llvm-svn: 45416
 2007-12-29 20:11:13 +00:00
Gordon Henriksen
351222b471 GarbageCollection.html is expanded to encompass the coming 
capabilities. This is a major rewrite and is easier to read en toto
rather than patchwise.

llvm-svn: 42414
 2007-09-27 19:31:36 +00:00
Chris Lattner
59f75f14db Reenable libgc and libprofile is explicitly requested. 
llvm-svn: 41851
 2007-09-11 17:12:32 +00:00