Matthias Braun 3757169d38 InstCombine: Restrict computeKnownBits() on all Values to OptLevel > 2 ... As part of r251146 InstCombine was extended to call computeKnownBits on every value in the function to determine whether it happens to be constant. This increases typical compiletime by 1-3% (5% in irgen+opt time) in my measurements. On the other hand this case did not trigger once in the whole llvm-testsuite. This patch introduces the notion of ExpensiveCombines which are only enabled for OptLevel > 2. I removed the check in InstructionSimplify as that is called from various places where the OptLevel is not known but given the rarity of the situation I think a check in InstCombine is enough. Differential Revision: http://reviews.llvm.org/D16835 llvm-svn: 263047		2016-03-09 18:47:11 +00:00
..
Hello	Remove autoconf support	2016-01-26 21:29:08 +00:00
InstCombine	InstCombine: Restrict computeKnownBits() on all Values to OptLevel > 2	2016-03-09 18:47:11 +00:00
Instrumentation	[tsan] Add support for pointer typed atomic stores, loads, and cmpxchg	2016-03-07 23:16:23 +00:00
IPO	InstCombine: Restrict computeKnownBits() on all Values to OptLevel > 2	2016-03-09 18:47:11 +00:00
ObjCARC	ADT: Remove == and != comparisons between ilist iterators and pointers	2016-02-21 20:39:50 +00:00
Scalar	[LoopDataPrefetch] Add stats and debug output	2016-03-09 05:33:21 +00:00
Utils	FunctionIndex is not optional for renameModuleForThinLTO(), make it a reference (NFC)	2016-03-09 01:37:14 +00:00
Vectorize	ADT: Remove == and != comparisons between ilist iterators and pointers	2016-02-21 20:39:50 +00:00
CMakeLists.txt
LLVMBuild.txt