Commit Graph

12 Commits

Author SHA1 Message Date
Xinliang David Li 470bfa9aaa [PGO] Cleanup: fix function-data field names
To make them the same as the common def in InstrProfData.inc.
This is a preparation to make the runtime code  to use the 
template as well. NFC

llvm-svn: 252421
2015-11-08 18:00:13 +00:00
Xinliang David Li d7134ead18 [PGO] Eliminate prof data register calls on FreeBSD platform
This is a follow up patch of r250199 after verifying the start/stop
section symbols work as spected on FreeBSD.

llvm-svn: 250680
2015-10-19 04:17:19 +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
Justin Bogner cc0d7eeb6d profile: Avoid name collisions between instrumentation and runtime
The naming scheme we're using for counters in profile data shares a
prefix with some fixed names we use for the runtime, notably
__llvm_profile_data_begin and _end. Embarrassingly, this means a
function called begin() can't be instrumented.

This modifies the runtime names so as not to collide with the
instrumentation.

llvm-svn: 217166
2014-09-04 15:45:31 +00:00
Duncan P. N. Exon Smith 084398857a InstrProf: Fix shared object profiling
Change the API of the instrumented profiling library to work with shared
objects.

  - Most things are now declared hidden, so that each executable gets
    its own copy.

  - Initialization hooks up a linked list of writers.

  - The raw format with shared objects that are profiled consists of a
    concatenated series of profiles.  llvm-profdata knows how to deal
    with that since r208938.

<rdar://problem/16918688>

llvm-svn: 208940
2014-05-16 01:30:24 +00:00
Alp Toker 1ee7fc7a1a Fix typos
llvm-svn: 208841
2014-05-15 02:22:34 +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 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 71704754d6 PGO: Declare zero-argument C functions as foo(void)
It turns out this is C code.  Specify foo(void).

<rdar://problem/15943240>

llvm-svn: 204396
2014-03-20 20:55:00 +00:00
Duncan P. N. Exon Smith 9edbae0f16 PGO: Change runtime prefix from pgo to profile
These functions are in the profile runtime.  PGO comes later.

Unfortunately, there's only room for 16 characters in a Darwin section,
so use __llvm_prf_ instead of __llvm_profile_ for section names.

<rdar://problem/15943240>

llvm-svn: 204391
2014-03-20 20:00:44 +00:00
Duncan P. N. Exon Smith f1212176ac PGO: Add function to reset counters at runtime
Adding __llvm_pgo_reset_counters(), which sets all the counters to 0.

<rdar://problem/15943240>

llvm-svn: 204386
2014-03-20 19:44:31 +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