Jingyue Wu 1d56cda023 Partially revert r210444 due to performance regression ... Summary: Converting outermost zext(a) to sext(a) causes worse code when the computation of zext(a) could be reused. For example, after converting ... = array[zext(a)] ... = array[zext(a) + 1] to ... = array[sext(a)] ... = array[zext(a) + 1], the program computes sext(a), which is actually unnecessary. I added one test in split-gep-and-gvn.ll to illustrate this scenario. Also, with r211281 and r211084, we annotate more "nuw" tags to computation involving CUDA intrinsics such as threadIdx.x. These annotations help with splitting GEP a lot, rendering the benefit we get from this reverted optimization only marginal. Test Plan: make check-all Reviewers: eliben, meheff Reviewed By: meheff Subscribers: jholewinski, llvm-commits Differential Revision: http://reviews.llvm.org/D4542 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@213209 91177308-0d34-0410-b5e6-96231b3b80d8		2014-07-16 23:25:00 +00:00
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Hello	[CMake] Add LLVM_LINK_COMPONENTS to loadable modules, LLVMHello and BugpointPasses, on Win32.	2014-07-13 13:36:48 +00:00
InstCombine	Utilize CastInst::CreatePointerBitCastOrAddrSpaceCast here.	2014-07-16 20:13:45 +00:00
Instrumentation	[dfsan] Introduce further optimization to reduce the number of union queries.	2014-07-15 22:13:19 +00:00
IPO	MergeFunc patch from Björn Steinbrink.	2014-07-15 10:46:51 +00:00
ObjCARC	Revert "Introduce a string_ostream string builder facilty"	2014-06-26 22:52:05 +00:00
Scalar	Partially revert r210444 due to performance regression	2014-07-16 23:25:00 +00:00
Utils	Give SplitBlockAndInsertIfThen the ability to update a domtree.	2014-07-15 04:40:27 +00:00
Vectorize	Emit warnings if vectorization is forced and fails.	2014-07-16 00:36:00 +00:00
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