Hal Finkel ab90084bca BBVectorize: Cap the number of candidate pairs in each instruction group ... For some basic blocks, it is possible to generate many candidate pairs for relatively few pairable instructions. When many (tens of thousands) of these pairs are generated for a single instruction group, the time taken to generate and rank the different vectorization plans can become quite large. As a result, we now cap the number of candidate pairs within each instruction group. This is done by closing out the group once the threshold is reached (set now at 3000 pairs). Although this will limit the overall compile-time impact, this may not be the best way to achieve this result. It might be better, for example, to prune excessive candidate pairs after the fact the prevent the generation of short, but highly-connected groups. We can experiment with this in the future. This change reduces the overall compile-time slowdown of the csa.ll test case in PR15222 to ~5x. If 5x is still considered too large, a lower limit can be used as the default. This represents a functionality change, but only for very large inputs (thus, there is no regression test). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175251 91177308-0d34-0410-b5e6-96231b3b80d8		2013-02-15 04:28:42 +00:00
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Hello	Move all of the header files which are involved in modelling the LLVM IR	2013-01-02 11:36:10 +00:00
InstCombine	Fix comment	2013-02-13 00:19:19 +00:00
Instrumentation	[asan] fix confusing indentation	2013-02-13 05:14:12 +00:00
IPO	Retain the name of the new internal global that's been shrunk.	2013-02-13 23:00:51 +00:00
ObjCARC	Changed isStoredObjCPointer => IsStoredObjCPointer. No functionality change.	2013-02-12 23:35:08 +00:00
Scalar	Actually delete this code, since it's really not clear what it's	2013-02-12 22:26:41 +00:00
Utils	Remove #includes from the commonly used LoopInfo.h.	2013-02-09 01:04:28 +00:00
Vectorize	BBVectorize: Cap the number of candidate pairs in each instruction group	2013-02-15 04:28:42 +00:00
CMakeLists.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
LLVMBuild.txt	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00
Makefile	Extracted ObjCARC.cpp into its own library libLLVMObjCARCOpts in preparation for refactoring the ARC Optimizer.	2013-01-28 01:35:51 +00:00