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268 Commits

Author SHA1 Message Date
Nick Lewycky
7a2ba2fbe4 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130443 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-28 21:35:49 +00:00
Nick Lewycky
3f5c832909 Use static inline to do the right thing when built in C99 mode. Of course, 
C89 doesn't have an inline keyword.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130279 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-27 03:22:17 +00:00
Oscar Fuentes
ab92d1e1c2 Honor LLVM_BUILD_RUNTIME. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130199 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 14:55:27 +00:00
Nick Lewycky
e88c724ff0 Add cmakefiles to build profile_rt.so! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130191 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 05:48:41 +00:00
Nick Lewycky
1790c9cbb6 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130186 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-26 03:54:16 +00:00
Benjamin Kramer
571c0e95fa Write out uint64_t as i{0..32},i{33..64} instead of i{0..32},0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129638 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 10:25:32 +00:00
Nick Lewycky
ece78a30bd Don't use C++ comments in C code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129637 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 04:25:36 +00:00
Nick Lewycky
b192870420 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129630 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-16 01:20:23 +00:00
Chris Lattner
7a2bdde0a0 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129558 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-15 05:18:47 +00:00
Benjamin Kramer
8b505739f4 Fix format string warning. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129467 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-13 20:41:43 +00:00
Nick Lewycky
8a7f4ecbc1 Use %ull here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129423 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-13 01:05:45 +00:00
Nick Lewycky
e9e7ffa10d Print our uint64_t with the more portable (C99 and C++0x) %PRIu64 format 
specifier.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129384 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-12 20:06:50 +00:00
Nick Lewycky
c6d8853dff The counters are unsigned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129380 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-12 19:35:45 +00:00
Nick Lewycky
93b68b20d4 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129340 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-04-12 01:06:09 +00:00
Andrew Trick
04317cc618 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124515 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-29 01:09:53 +00:00
Mikhail Glushenkov
a7236d3a92 Rename 'libprofile/exported_symbols.lst' to 'libprofile/libprofile.exports'. 
Makefile.rules assumes that all EXPORTED_SYMBOL_FILEs have the .exports
extension.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112964 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-09-03 15:42:45 +00:00
Dan Gohman
630b58bb5a Delete a blank line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101459 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-16 13:32:55 +00:00
Dan Gohman
7c52f2ee06 Make the export files absolute paths, and change Makefile.rules 
to expect them this way, to fix srcdir!=objdir builds.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101414 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 23:08:00 +00:00
Daniel Dunbar
51faa37b4e Don't use absolute path for EXPORTED_SYMBOL_FILE, this breaks under the new 
system.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101404 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 21:57:43 +00:00
Anton Korobeynikov
764f62ba60 Revert r100896 and around - this breaks the only mingw32 buildbot we have. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101387 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-15 19:51:42 +00:00
Chris Lattner
e3a39d40db suck the propagating "has dynamic libs" check into a single makefile 
variable TARGET_HAS_DYNAMIC_LIBS


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100896 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 20:51:47 +00:00
Chris Lattner
21aa347c28 add minix support, patch by Kees van Reeuwijk! PR6797 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100895 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-04-09 20:45:04 +00:00
Chris Lattner
1c383ca2ef disable this for mingw as well, we really need a 'has no dynamic linking' predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97882 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-06 18:54:37 +00:00
Chris Lattner
8550592b80 disable libprofile on cygwin, patch by Aaron Gray. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97772 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-03-05 01:00:34 +00:00
Daniel Dunbar
7cfbe2576d Switch .bc/.ll Makefile rules to use LLVM{CC,CXX} instead of LLVMG{CC,XX} 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96936 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-02-23 10:28:06 +00:00
Chris Lattner
5fadf17709 remove the random sampling framework, which is not maintained anymore. 
If there is interest, it can be resurrected from SVN.  PR4912.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92422 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-01-02 20:07:03 +00:00
Andreas Neustifter
f771dae69a OptimalEdgeProfiling: Creation of profiles. 
This adds the instrumentation and runtime part of OptimalEdgeProfiling.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80712 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-09-01 19:03:44 +00:00
Andreas Neustifter
1c29357c52 Read Makefile.config before using LLVMGCC. 
See http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090824/085828.html


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80372 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-28 16:13:45 +00:00
Daniel Dunbar
5a8969a7e2 Another NO_RUNTIME_LIBRARIES tweak... 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80331 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-28 03:06:28 +00:00
Daniel Dunbar
53339fd046 Tweak NO_RUNTIME_LIBS. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80330 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-28 02:20:39 +00:00
Daniel Dunbar
b562b47dee Don't build runtime libraries in an Apple style build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80303 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-27 23:43:28 +00:00
Andreas Neustifter
ade1a22522 Add llvm_start_edge_profiling to exported symbols for libprofile_rt. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79944 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-24 21:41:37 +00:00
Daniel Dunbar
a4b62c4518 Don't try to build .bc version of libprofile if LLVMGCC isn't available. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79514 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-20 05:12:55 +00:00
Daniel Dunbar
7dadba34d7 Remove cruft for installing runtime/ libraries directly into the LLVMGCCDIR; 
that is totally bogus.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79512 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-08-20 05:02:41 +00:00
Gordon Henriksen
6da385e07f Drop toy GC runtime. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65801 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-03-02 03:46:48 +00:00
Gordon Henriksen
bcb265e2af Fixing the stack walker. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46302 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-24 05:16:36 +00:00
Gordon Henriksen
8fa8929177 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)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45670 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-07 01:30:53 +00:00
Chris Lattner
234d529e58 remove attribution from a variety of miscellaneous files. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45425 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 22:59:10 +00:00
Chris Lattner
57360d1f1c remove attributions from the rest of the llvm makefiles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45416 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-12-29 20:11:13 +00:00
Gordon Henriksen
326e24fff0 GarbageCollection.html is expanded to encompass the coming 
capabilities. This is a major rewrite and is easier to read en toto
rather than patchwise.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42414 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-27 19:31:36 +00:00
Chris Lattner
95bb69acbc Reenable libgc and libprofile is explicitly requested. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41851 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-11 17:12:32 +00:00
Chris Lattner
210329a025 remove an obsolete library. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41850 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-09-11 17:10:52 +00:00
Anton Korobeynikov
b08c6db115 Dror GCCLibraries: they are obsolete since 2.0 release. This also reduces number of licenses used in LLVM. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41257 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-08-21 22:40:44 +00:00
Chris Lattner
6e3d3bc9ee crtend is only for llvm-gcc3, remove it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34529 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-02-23 19:34:09 +00:00
Chris Lattner
5c4a96dfc5 the old trace values pass has been removed, remove its runtime library. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32999 91177308-0d34-0410-b5e6-96231b3b80d8
 2007-01-07 18:13:48 +00:00
Reid Spencer
8b2e1419cf Undo removal of the runtime libraries. While this may have been a bit 
premature, these libraries will be going away for the 2.0 release. Other
arrangements for profiling, gc, etc. should be made in the next few months.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31807 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-17 03:32:33 +00:00
Reid Spencer
ac90d5e50b In LLVM 2.0 we won't use the runtime libraries as llvm-gcc3 support will 
be dropped. This patch pertains to removing the runtime directory from LLVM.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31793 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-16 23:17:27 +00:00
Reid Spencer
162e20934b Remove unused variable. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31404 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-03 01:58:30 +00:00
Reid Spencer
3ed469ccd7 For PR786: 
Turn on -Wunused and -Wno-unused-parameter. Clean up most of the resulting
fall out by removing unused variables. Remaining warnings have to do with
unused functions (I didn't want to delete code without review) and unused
variables in generated code. Maintainers should clean up the remaining
issues when they see them. All changes pass DejaGnu tests and Olden.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@31380 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-11-02 20:25:50 +00:00
John Criswell
fd3a9c7972 Describe and date modifications we made per LGPL requirements. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29569 91177308-0d34-0410-b5e6-96231b3b80d8
 2006-08-08 14:47:54 +00:00