Louis Gerbarg 2d1fa5f718 Add support for combining GEPs across PHI nodes ... Currently LLVM will generally merge GEPs. This allows backends to use more complex addressing modes. In some cases this is not happening because there is PHI inbetween the two GEPs: GEP1--\ |-->PHI1-->GEP3 GEP2--/ This patch checks to see if GEP1 and GEP2 are similiar enough that they can be cloned (GEP12) in GEP3's BB, allowing GEP->GEP merging (GEP123): GEP1--\ --\ --\ |-->PHI1-->GEP3 ==> |-->PHI2->GEP12->GEP3 == > |-->PHI2->GEP123 GEP2--/ --/ --/ This also breaks certain use chains that are preventing GEP->GEP merges that the the existing instcombine would merge otherwise. Tests included. rdar://15547484 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209049 91177308-0d34-0410-b5e6-96231b3b80d8		2014-05-16 23:47:24 +00:00
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Hello	[Modules] Fix potential ODR violations by sinking the DEBUG_TYPE	2014-04-22 02:55:47 +00:00
InstCombine	Add support for combining GEPs across PHI nodes	2014-05-16 23:47:24 +00:00
Instrumentation	Delete getAliasedGlobal.	2014-05-16 22:37:03 +00:00
IPO	Fix most of PR10367.	2014-05-16 19:35:39 +00:00
ObjCARC	Add comdat key field to llvm.global_ctors and llvm.global_dtors	2014-05-16 20:39:27 +00:00
Scalar	Revert "Implement global merge optimization for global variables."	2014-05-16 13:02:18 +00:00
Utils	Add comdat key field to llvm.global_ctors and llvm.global_dtors	2014-05-16 20:39:27 +00:00
Vectorize	SLPVectorizer: Instead of just performing CSE on dead blocks ignore them completely.	2014-05-11 10:28:58 +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