Jin-Gu Kang 198e97c423 Add comment as following: ... load and store reference same memory location, the memory location is represented by getelementptr with two uses (load and store) and the getelementptr's base is alloca with single use. At this point, instructions from alloca to store can be removed. (this pattern is generated when bitfield is accessed.) For example, %u = alloca %struct.test, align 4 ; [#uses=1] %0 = getelementptr inbounds %struct.test* %u, i32 0, i32 0;[#uses=2] %1 = load i8* %0, align 4 ; [#uses=1] %2 = and i8 %1, -16 ; [#uses=1] %3 = or i8 %2, 5 ; [#uses=1] store i8 %3, i8* %0, align 4 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127565 91177308-0d34-0410-b5e6-96231b3b80d8		2011-03-13 14:05:51 +00:00
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Hello	Since the Hello pass is built as a loadable dynamic library, don't try to convert it to new-style registration yet.	2010-10-07 00:31:16 +00:00
InstCombine	Add comment as following:	2011-03-13 14:05:51 +00:00
Instrumentation	Implementation of path profiling.	2011-01-29 01:09:53 +00:00
IPO	These llvm.dbg.* constants are not used anymore.	2011-03-09 19:41:33 +00:00
Scalar	Roll r127459 back in:	2011-03-11 21:52:04 +00:00
Utils	PR9420; an instruction before an unreachable is guaranteed not to have any	2011-03-09 00:48:33 +00:00
CMakeLists.txt	Move library stuff out of the toplevel CMakeLists.txt file.	2011-02-18 22:06:14 +00:00
Makefile	Revert r100896 and around - this breaks the only mingw32 buildbot we have.	2010-04-15 19:51:42 +00:00