Matthias Braun e152c1527d 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 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@263047 91177308-0d34-0410-b5e6-96231b3b80d8		2016-03-09 18:47:11 +00:00
..
ArgumentPromotion.cpp	[AA] Hoist the logic to reformulate various AA queries in terms of other	2016-03-02 15:56:53 +00:00
BarrierNoopPass.cpp	Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)	2015-06-23 09:49:53 +00:00
CMakeLists.txt	WholeProgramDevirt: introduce.	2016-02-09 22:50:34 +00:00
ConstantMerge.cpp	IPO: Remove implicit ilist iterator conversions, NFC	2015-10-13 17:51:03 +00:00
CrossDSOCFI.cpp	[cfi] Cross-DSO CFI diagnostic mode (LLVM part).	2016-01-25 23:35:03 +00:00
DeadArgumentElimination.cpp	Convert int to Twine instead of using utostr since it was already being added to a Twine. NFC	2016-01-31 00:15:35 +00:00
ElimAvailExtern.cpp	Disallow aliases to available_externally.	2015-11-26 19:22:59 +00:00
ExtractGV.cpp	GlobalValue: use getValueType() instead of getType()->getPointerElementType().	2016-01-16 20:30:46 +00:00
ForceFunctionAttrs.cpp	Fix option desc in FunctionAttrs; NFC	2016-01-06 18:18:16 +00:00
FunctionAttrs.cpp	[AA] Hoist the logic to reformulate various AA queries in terms of other	2016-03-02 15:56:53 +00:00
FunctionImport.cpp	FunctionIndex is not optional for renameModuleForThinLTO(), make it a reference (NFC)	2016-03-09 01:37:14 +00:00
GlobalDCE.cpp	Re-reapply "[IR] Move optional data in llvm::Function into a hungoff uselist"	2015-12-19 08:52:49 +00:00
GlobalOpt.cpp	Transforms: Move GlobalOpt's Evaluator to Utils where it can be reused.	2016-02-03 02:51:00 +00:00
InferFunctionAttrs.cpp	[BasicAA] Remove special casing of memset_pattern16 in favor of generic attribute inference	2016-01-06 04:53:16 +00:00
InlineAlways.cpp	Refactor threshold computation for inline cost analysis	2016-01-14 23:16:29 +00:00
Inliner.cpp	Revert revisions 262636, 262643, 262679, and 262682.	2016-03-08 00:36:35 +00:00
InlineSimple.cpp	Revert revisions 262636, 262643, 262679, and 262682.	2016-03-08 00:36:35 +00:00
Internalize.cpp	Use a StringSet in Internalize, and allow to create the pass from an existing one (NFC)	2016-02-10 23:24:31 +00:00
IPConstantPropagation.cpp	Revert r240137 (Fixed/added namespace ending comments using clang-tidy. NFC)	2015-06-23 09:49:53 +00:00
IPO.cpp	[PM] Port the PostOrderFunctionAttrs pass to the new pass manager and	2016-02-18 11:03:11 +00:00
LLVMBuild.txt	[PGO] Passmanagerbuilder change that enable IR level PGO instrumentation	2016-01-21 18:28:59 +00:00
LoopExtractor.cpp	LoopInfo: Simplify ownership of Loop objects	2016-01-08 19:08:53 +00:00
LowerBitSets.cpp	LowerBitSets: Don't bother to do any work if the llvm.bitset.test intrinsic is unused.	2016-02-03 03:48:46 +00:00
MergeFunctions.cpp	Remove uses of builtin comma operator.	2016-02-18 22:09:30 +00:00
PartialInlining.cpp	IPO: Remove implicit ilist iterator conversions, NFC	2015-10-13 17:51:03 +00:00
PassManagerBuilder.cpp	InstCombine: Restrict computeKnownBits() on all Values to OptLevel > 2	2016-03-09 18:47:11 +00:00
PruneEH.cpp	[PruneEH] Don't try to insert a terminator after another terminator	2016-01-23 06:00:44 +00:00
SampleProfile.cpp	Use LineLocation instead of CallsiteLocation to index callsite profile.	2016-03-03 18:09:32 +00:00
StripDeadPrototypes.cpp	[PM] Port StripDeadPrototypes to the new pass manager	2015-10-30 23:28:12 +00:00
StripSymbols.cpp	DI: Reverse direction of subprogram -> function edge.	2015-11-05 22:03:56 +00:00
WholeProgramDevirt.cpp	Fix evaluation order. Spotted by Alexander Riccio!	2016-03-08 03:50:36 +00:00