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
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Analysis	Have CannotBeNegativeZero() be aware of the nsz fast-math flag	2012-12-06 00:07:09 +00:00
Archive	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
AsmParser	Split up the ParseOptionalAttrs method into three different methods for each	2012-12-04 23:40:58 +00:00
Bitcode	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
CodeGen	s/getLowerBoundDefault/getDefaultLowerBound/ for consistency. Also put the more natural check first in the if-then statement.	2012-12-06 07:55:19 +00:00
DebugInfo	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
ExecutionEngine	Adjust JIT target triple on OS X to match the current architecture.	2012-12-05 19:09:13 +00:00
Linker	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
MC	Revert r169456, "change MCContext to work on the doInitialization/doFinalization model"	2012-12-06 02:00:13 +00:00
Object	Use the new script to sort the includes of every file under lib.	2012-12-03 16:50:05 +00:00
Option	Copy clang/Driver/<Option parsing stuff> to llvm.	2012-12-05 00:29:32 +00:00
Support	Make NaCl naming consistent. The triple OSType is called NaCl and is represented	2012-12-04 18:37:26 +00:00
TableGen	Sort includes for all of the .h files under the 'lib' tree. These were	2012-12-04 07:12:27 +00:00
Target	Remove intrinsic specific instructions for (V)MOVQUmr with patterns pointing to the normal instructions.	2012-12-06 07:31:16 +00:00
Transforms	[msan] Do not store origin for clean values.	2012-12-06 11:41:03 +00:00
VMCore	Fix name. The array is unboundED.	2012-12-05 21:43:30 +00:00
CMakeLists.txt	Copy clang/Driver/<Option parsing stuff> to llvm.	2012-12-05 00:29:32 +00:00
LLVMBuild.txt	Copy clang/Driver/<Option parsing stuff> to llvm.	2012-12-05 00:29:32 +00:00
Makefile	Copy clang/Driver/<Option parsing stuff> to llvm.	2012-12-05 00:29:32 +00:00