Reid Kleckner f30ad55559 [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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Analysis	[SCEV] Add smin support to getRangeRef	2019-09-12 21:32:27 +00:00
Assembler
Bindings
Bitcode
BugPoint
CodeGen	[ARM][Codegen] Autogenerate arm-cgp-casts.ll test.	2019-09-16 18:28:22 +00:00
DebugInfo	Revert "Fix test failures after r371640"	2019-09-13 08:26:59 +00:00
Demangle
Examples
ExecutionEngine
Feature
FileCheck
Instrumentation	[PGO] Use linkonce_odr linkage for __profd_ variables in comdat groups	2019-09-16 18:49:09 +00:00
Integer
JitListener
Linker
LTO	[IRMover] Don't map globals if their types are the same	2019-09-11 18:35:49 +00:00
MachineVerifier
MC	[WebAssembly] Narrowing and widening SIMD ops	2019-09-13 22:54:41 +00:00
Object	[llvm-ar] Uncapitalize error messages and delete full stop	2019-09-14 01:18:47 +00:00
ObjectYAML	[yaml2obj/ObjectYAML] - Cleanup the error reporting API, add custom errors handlers.	2019-09-13 16:00:16 +00:00
Other
Reduce	Fix llvm-reduce tests so that they don't assume the source code is	2019-09-12 21:03:49 +00:00
SafepointIRVerifier
Support
SymbolRewriter
TableGen	[CodeEmitter] Improve testing for APInt encoding	2019-09-15 08:44:40 +00:00
ThinLTO/X86	Reland "clang-misexpect: Profile Guided Validation of Performance Annotations in LLVM"	2019-09-11 16:19:50 +00:00
tools	[llvm-objcopy] Ignore -B --binary-architecture=	2019-09-14 01:36:31 +00:00
Transforms	[SimplifyCFG] FoldTwoEntryPHINode(): consider *total* speculation cost, not per-BB cost	2019-09-16 16:18:24 +00:00
Unit
Verifier
YAMLParser
.clang-format
CMakeLists.txt
lit.cfg.py
lit.site.cfg.py.in
TestRunner.sh