Rong Xu 568d841225 [PGO] Fix profile mismatch in COMDAT function with pre-inliner ...

Pre-instrumentation inline (pre-inliner) greatly improves the IR
instrumentation code performance, among other benefits. One issue of the
pre-inliner is it can introduce CFG-mismatch for COMDAT functions. This
is due to the fact that the same COMDAT function may have different early
inline decisions across different modules -- that means different copies
of COMDAT functions will have different CFG checksum.

In this patch, we propose a partially renaming the COMDAT group and its
member function/variable so we have different profile counter for each
version. We will post-fix the COMDAT function and the group name with its
FunctionHash.

Differential Revision: http://reviews.llvm.org/D22600


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@276673 91177308-0d34-0410-b5e6-96231b3b80d8

2016-07-25 18:45:37 +00:00

..

AddressSanitizer.cpp

Unpoison stack before resume instruction

2016-07-22 22:04:38 +00:00

BoundsChecking.cpp

Apply clang-tidy's modernize-loop-convert to most of lib/Transforms.

2016-06-26 12:28:59 +00:00

CFGMST.h

[NFC] Header cleanup

2016-04-18 09:17:29 +00:00

CMakeLists.txt

[PGO] Promote indirect calls to conditional direct calls with value-profile

2016-04-27 23:20:27 +00:00

DataFlowSanitizer.cpp

Apply clang-tidy's modernize-loop-convert to most of lib/Transforms.

2016-06-26 12:28:59 +00:00

EfficiencySanitizer.cpp

[esan:cfrag] Add option -esan-aux-field-info

2016-07-07 03:20:16 +00:00

GCOVProfiling.cpp

Rename StringMap::emplace_second to try_emplace.

2016-07-21 13:37:48 +00:00

IndirectCallPromotion.cpp

Address review comments.

2016-07-17 14:46:58 +00:00

InstrProfiling.cpp

[Profile] deprecate __llvm_profile_override_default_filename

2016-07-21 23:19:10 +00:00

Instrumentation.cpp

[PM] code refactoring /NFC

2016-06-05 03:40:03 +00:00

LLVMBuild.txt

[PGO] Resubmit "MST based PGO instrumentation infrastructure" (r254021)

2015-12-09 18:08:16 +00:00

MaximumSpanningTree.h

…

MemorySanitizer.cpp

[msan] Fix __msan_maybe_ for non-standard type sizes.

2016-07-01 22:49:59 +00:00

PGOInstrumentation.cpp

[PGO] Fix profile mismatch in COMDAT function with pre-inliner

2016-07-25 18:45:37 +00:00

SanitizerCoverage.cpp

[sanitizer-coverage] make sure that calls to __sanitizer_cov_trace_pc are not merged (otherwise different calls get the same PC and confuse fuzzers)

2016-07-14 17:59:01 +00:00

ThreadSanitizer.cpp

[tsan] Don't instrument __llvm_gcov_global_state_pred or __llvm_gcda*

2016-07-19 20:16:08 +00:00