Rafael Espindola 4518a1dc81 InstCombine: Improvement to check if signed addition overflows. ... This patch implements two things: 1. If we know one number is positive and another is negative, we return true as signed addition of two opposite signed numbers will never overflow. 2. Implemented TODO : If one of the operands only has one non-zero bit, and if the other operand has a known-zero bit in a more significant place than it (not including the sign bit) the ripple may go up to and fill the zero, but won't change the sign. e.x - (x & ~4) + 1 We make sure that we are ignoring 0 at MSB. Patch by Suyog Sarda. llvm-svn: 210186		2014-06-04 15:39:14 +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	InstCombine: Improvement to check if signed addition overflows.	2014-06-04 15:39:14 +00:00
Instrumentation	[asan] Fix coverage instrumentation with -asan-globals=0.	2014-06-03 14:16:00 +00:00
IPO	When analyzing params/args for readnone/readonly, don't forget to consider that a pointer argument may be passed through a callsite to the return, and that we may need to analyze it. Fixes a bug reported on llvm-dev: http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-May/073098.html	2014-05-30 02:31:27 +00:00
ObjCARC	Add comdat key field to llvm.global_ctors and llvm.global_dtors	2014-05-16 20:39:27 +00:00
Scalar	[Reassociate] Similar to "X + -X" -> "0", added code to handle "X + ~X" -> "-1".	2014-05-31 15:01:54 +00:00
Utils	Allow alias to point to an arbitrary ConstantExpr.	2014-06-03 02:41:57 +00:00
Vectorize	Allow vectorization of intrinsics such as powi,cttz and ctlz in Loop and SLP Vectorizer.	2014-05-30 04:31:24 +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