Rafael Espindola e8075c6877 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. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209746 91177308-0d34-0410-b5e6-96231b3b80d8		2014-05-28 15:30:40 +00:00
..
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.	2014-05-28 15:30:40 +00:00
Instrumentation	[asancov] Don't emit extra runtime calls when compiling without coverage.	2014-05-28 09:26:46 +00:00
IPO	Add an extension point for peephole optimizers.	2014-05-25 10:27:02 +00:00
ObjCARC	Add comdat key field to llvm.global_ctors and llvm.global_dtors	2014-05-16 20:39:27 +00:00
Scalar	Distribute sext/zext to the operands of and/or/xor	2014-05-27 18:00:00 +00:00
Utils	Add support for missed and analysis optimization remarks.	2014-05-22 14:19:46 +00:00
Vectorize	Add support for missed and analysis optimization remarks.	2014-05-22 14:19:46 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile