Reid Kleckner 32837a0c93 [PGO] Use linkonce_odr linkage for __profd_ variables in comdat groups ... This fixes relocations against __profd_ symbols in discarded sections, which is PR41380. In general, instrumentation happens very early, and optimization and inlining happens afterwards. The counters for a function are calculated early, and after inlining, counters for an inlined function may be widely referenced by other functions. For C++ inline functions of all kinds (linkonce_odr & available_externally mainly), instr profiling wants to deduplicate these __profc_ and __profd_ globals. Otherwise the binary would be quite large. I made __profd_ and __profc_ comdat in r355044, but I chose to make __profd_ internal. At the time, I was only dealing with coverage, and in that case, none of the instrumentation needs to reference __profd_. However, if you use PGO, then instrumentation passes add calls to __llvm_profile_instrument_range which reference __profd_ globals. The solution is to make these globals externally visible by using linkonce_odr linkage for data as was done for counters. This is safe because PGO adds a CFG hash to the names of the data and counter globals, so if different TUs have different globals, they will get different data and counter arrays. Reviewers: xur, hans Differential Revision: https://reviews.llvm.org/D67579 llvm-svn: 372020		2019-09-16 18:49:09 +00:00
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AddressSanitizer.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00
BoundsChecking.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00
CFGMST.h	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
CGProfile.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
CMakeLists.txt	Add a transform pass to make the executable semantics of poison explicit in the IR	2019-07-09 18:49:29 +00:00
ControlHeightReduction.cpp	[PGO][CHR] Speed up following long, interlinked use-def chains.	2019-09-05 16:56:55 +00:00
DataFlowSanitizer.cpp	[DFSan] Add UnaryOperator visitor to DataFlowSanitizer	2019-06-19 15:11:41 +00:00
GCOVProfiling.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00
HWAddressSanitizer.cpp	[Instruction] Add hasMetadata(Kind) helper [NFC]	2019-09-04 17:28:48 +00:00
IndirectCallPromotion.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
InstrOrderFile.cpp	Rename F_{None,Text,Append} to OF_{None,Text,Append}. NFC	2019-08-05 05:43:48 +00:00
InstrProfiling.cpp	[PGO] Use linkonce_odr linkage for __profd_ variables in comdat groups	2019-09-16 18:49:09 +00:00
Instrumentation.cpp	[NewPM][Sancov] Make Sancov a Module Pass instead of 2 Passes	2019-09-04 20:30:29 +00:00
LLVMBuild.txt	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
MaximumSpanningTree.h	Use llvm::stable_sort	2019-04-23 14:51:27 +00:00
MemorySanitizer.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00
PGOInstrumentation.cpp	Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM"	2019-09-11 16:19:50 +00:00
PGOMemOPSizeOpt.cpp	[llvm] Migrate llvm::make_unique to std::make_unique	2019-08-15 15:54:37 +00:00
PoisonChecking.cpp	[PoisonChecking] Flesh out complete todo list for full coverage	2019-07-09 19:59:39 +00:00
SanitizerCoverage.cpp	[NewPM][Sancov] Make Sancov a Module Pass instead of 2 Passes	2019-09-04 20:30:29 +00:00
ThreadSanitizer.cpp	Change TargetLibraryInfo analysis passes to always require Function	2019-09-07 03:09:36 +00:00