Leonard Chan 2c53ec0c7b [NewPM][Sancov] Make Sancov a Module Pass instead of 2 Passes ... This patch merges the sancov module and funciton passes into one module pass. The reason for this is because we ran into an out of memory error when attempting to run asan fuzzer on some protobufs (pc.cc files). I traced the OOM error to the destructor of SanitizerCoverage where we only call appendTo[Compiler]Used which calls appendToUsedList. I'm not sure where precisely in appendToUsedList causes the OOM, but I am able to confirm that it's calling this function *repeatedly* that causes the OOM. (I hacked sancov a bit such that I can still create and destroy a new sancov on every function run, but only call appendToUsedList after all functions in the module have finished. This passes, but when I make it such that appendToUsedList is called on every sancov destruction, we hit OOM.) I don't think the OOM is from just adding to the SmallSet and SmallVector inside appendToUsedList since in either case for a given module, they'll have the same max size. I suspect that when the existing llvm.compiler.used global is erased, the memory behind it isn't freed. I could be wrong on this though. This patch works around the OOM issue by just calling appendToUsedList at the end of every module run instead of function run. The same amount of constants still get added to llvm.compiler.used, abd we make the pass usage and logic simpler by not having any inter-pass dependencies. Differential Revision: https://reviews.llvm.org/D66988 llvm-svn: 370971		2019-09-04 20:30:29 +00:00
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CMakeLists.txt	[New PM][PassInstrumentation] IR printing support for New Pass Manager	2018-09-24 16:08:15 +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
PassBuilder.cpp	[LoopPassManager + MemorySSA] Only enable use of MemorySSA for LPMs known to preserve it.	2019-08-21 17:00:57 +00:00
PassPlugin.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00
PassRegistry.def	[NewPM][Sancov] Make Sancov a Module Pass instead of 2 Passes	2019-09-04 20:30:29 +00:00
StandardInstrumentations.cpp	Update the file headers across all of the LLVM projects in the monorepo	2019-01-19 08:50:56 +00:00