Evgeniy Stepanov 4031b194ac [msan] Do not store origin for clean values. ... Instead of unconditionally storing origin with every application store, only do this when the shadow of the stored value is != 0. This change also delays instrumentation of stores until after the walk over function's instructions, because adding new basic blocks confuses InstVisitor. We only keep 1 origin value per 4 bytes of application memory. This change fixes the bug when a store of a single clean byte wiped the origin for the whole 4-byte area. Since stores of uninitialized values are relatively uncommon, this change improves performance of track-origins mode by 5% median and by up to 47% on specs. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169490 91177308-0d34-0410-b5e6-96231b3b80d8		2012-12-06 11:41:03 +00:00
..
AddressSanitizer.cpp	[asan] add experimental -asan-realign-stack option (true by default, which does not change the current behavior)	2012-12-04 06:14:01 +00:00
BlackList.cpp	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
BlackList.h	[ASan]: Add minimalistic support for turning off initialization-order checking for globals of specified types. Tests for this behavior will go to ASan test suite in compiler-rt.	2012-11-12 14:00:01 +00:00
BoundsChecking.cpp	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
CMakeLists.txt	Initial commit of MemorySanitizer.	2012-11-29 09:57:20 +00:00
EdgeProfiling.cpp	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
GCOVProfiling.cpp	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
Instrumentation.cpp	Initial commit of MemorySanitizer.	2012-11-29 09:57:20 +00:00
LLVMBuild.txt	LLVMBuild: Remove trailing newline, which irked me.	2011-12-12 19:48:00 +00:00
Makefile	make -fno-rtti the default unless a directory builds with REQUIRES_RTTI.	2010-01-24 20:43:08 +00:00
MaximumSpanningTree.h	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
MemorySanitizer.cpp	[msan] Do not store origin for clean values.	2012-12-06 11:41:03 +00:00
OptimalEdgeProfiling.cpp	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
PathProfiling.cpp	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
ProfilingUtils.cpp	Back out r166591, not sure why this made it through since I cancelled the command. Bleh, sorry about this!	2012-10-24 17:25:11 +00:00
ProfilingUtils.h	Add a function for profiling to run at shutdown. Unlike the existing API, this	2011-04-08 22:19:52 +00:00
ThreadSanitizer.cpp	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00