llvm-project/llvm/test/Instrumentation
Vedant Kumar de2ae96710 [InstrProf] Add support for dead_strip+live_support functionality
On Darwin, marking a section as "regular,live_support" means that a
symbol in the section should only be kept live if it has a reference to
something that is live. Otherwise, the linker is free to dead-strip it.

Turn this functionality on for the __llvm_prf_data section.

This means that counters and data associated with dead functions will be
removed from dead-stripped binaries. This will result in smaller
profiles and binaries, and should speed up profile collection.

Tested with check-profile, llvm-lit test/tools/llvm-{cov,profdata}, and
check-llvm.

Differential Revision: https://reviews.llvm.org/D25456

llvm-svn: 283947
2016-10-11 21:48:16 +00:00
..
AddressSanitizer [ASAN] Add the binder globals on Darwin to llvm.compiler.used to avoid LTO dead-stripping 2016-10-01 00:05:34 +00:00
BoundsChecking Add a bunch of CHECK missing colons in tests. NFC. 2015-03-14 01:43:57 +00:00
DataFlowSanitizer [PR27284] Reverse the ownership between DICompileUnit and DISubprogram. 2016-04-15 15:57:41 +00:00
EfficiencySanitizer [EfficiencySanitizer] Using '$' instead of '#' for struct counter name 2016-09-22 08:33:06 +00:00
InstrProfiling [InstrProf] Add support for dead_strip+live_support functionality 2016-10-11 21:48:16 +00:00
MemorySanitizer [msan] Fix __msan_maybe_ for non-standard type sizes. 2016-07-01 22:49:59 +00:00
SanitizerCoverage [sanitizer-coverage] use private linkage for coverage guards, delete old commented-out code. 2016-10-11 19:36:50 +00:00
ThreadSanitizer [tsan] Don't instrument __llvm_gcov_global_state_pred or __llvm_gcda* 2016-07-19 20:16:08 +00:00