llvm-project

Commit Graph

Author	SHA1	Message	Date
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	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

Author

SHA1

Message

Date

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

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

3 Commits