Chandler Carruth 274d377ea6 Extend the inline cost calculation to account for bonuses due to ... correlated pairs of pointer arguments at the callsite. This is designed to recognize the common C++ idiom of begin/end pointer pairs when the end pointer is a constant offset from the begin pointer. With the C-based idiom of a pointer and size, the inline cost saw the constant size calculation, and this provides the same level of information for begin/end pairs. In order to propagate this information we have to search for candidate operations on a pair of pointer function arguments (or derived from them) which would be simplified if the pointers had a known constant offset. Then the callsite analysis looks for such pointer pairs in the argument list, and applies the appropriate bonus. This helps LLVM detect that half of bounds-checked STL algorithms (such as hash_combine_range, and some hybrid sort implementations) disappear when inlined with a constant size input. However, it's not a complete fix due the inaccuracy of our cost metric for constants in general. I'm looking into that next. Benchmarks showed no significant code size change, and very minor performance changes. However, specific code such as hashing is showing significantly cleaner inlining decisions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152752 91177308-0d34-0410-b5e6-96231b3b80d8		2012-03-14 23:19:53 +00:00
..
AsmWriter.cpp	llvm::SwitchInst	2012-03-11 06:09:17 +00:00
Attributes.cpp	Extend Attributes to 64 bits	2012-01-20 17:56:17 +00:00
AutoUpgrade.cpp	Add auto upgrade support for x86 pcmpgt/pcmpeq intrinics removed in r149367.	2012-02-03 06:10:55 +00:00
BasicBlock.cpp	Add a constified getLandingPad() method.	2012-01-31 00:26:24 +00:00
CMakeLists.txt	build/CMake: Finish removal of add_llvm_library_dependencies.	2011-11-29 19:25:30 +00:00
ConstantFold.cpp	Remove some dead code and tidy things up now that vectors use ConstantDataVector	2012-02-06 21:56:39 +00:00
ConstantFold.h	Convert ConstantFoldGetElementPtr to use ArrayRef.	2011-07-19 15:30:30 +00:00
Constants.cpp	Reserve space in these vectors to prevent having to grow the array too	2012-02-07 01:27:51 +00:00
ConstantsContext.h	Switch this code to use hash_combine_range rather than incremental calls	2012-03-07 03:22:32 +00:00
Core.cpp	Convert assert(0) to llvm_unreachable	2012-02-05 22:14:15 +00:00
DebugInfoProbe.cpp	Revert unintentional check-in.	2011-06-24 20:48:14 +00:00
DebugLoc.cpp	Spacing.	2011-10-11 22:58:58 +00:00
Dominators.cpp	Change the implementation of dominates(inst, inst) to one based on what the	2012-02-26 02:19:19 +00:00
Function.cpp	Emit the "is an intrinsic overloaded" table as a bitfield.	2012-03-01 02:16:57 +00:00
GCOV.cpp	Remove extra semi-colons.	2012-02-22 17:25:00 +00:00
Globals.cpp	Micro-optimisation in getAliasedGlobal.	2011-08-01 12:28:01 +00:00
GVMaterializer.cpp
InlineAsm.cpp	land David Blaikie's patch to de-constify Type, with a few tweaks.	2011-07-18 04:54:35 +00:00
Instruction.cpp	[unwind removal] Remove all of the code for the dead 'unwind' instruction. There	2012-02-06 21:44:22 +00:00
Instructions.cpp	Taken into account Duncan's comments for r149481 dated by 2nd Feb 2012:	2012-03-08 07:06:20 +00:00
IntrinsicInst.cpp
IRBuilder.cpp	reapply the patches reverted in r149470 that reenable ConstantDataArray,	2012-02-05 02:29:43 +00:00
LeakDetector.cpp	Merge System into Support.	2010-11-29 18:16:10 +00:00
LeaksContext.h
LLVMBuild.txt	LLVMBuild: Remove trailing newline, which irked me.	2011-12-12 19:48:00 +00:00
LLVMContext.cpp	generalize LLVMContext::emitError to take a twine instead of a StringRef.	2012-01-03 23:47:05 +00:00
LLVMContextImpl.cpp	Efficient Constant Uniquing.	2012-02-05 20:54:10 +00:00
LLVMContextImpl.h	Replace the hashing functions on APInt and APFloat with overloads of the	2012-03-04 12:02:57 +00:00
Makefile	Build system infrastructure for multiple tblgens.	2011-10-06 01:51:51 +00:00
Metadata.cpp	Add a way to replace a field inside a metadata node. This can be	2012-02-15 09:09:29 +00:00
Module.cpp	s/ModAttrBehavior/ModFlagBehavior/g to be consistent with how module flags are named elsewhere.	2012-02-16 10:28:10 +00:00
Pass.cpp	Added TargetPassConfig::disablePass/substitutePass as a general mechanism to override specific passes.	2012-02-15 03:21:47 +00:00
PassManager.cpp	Convert assert(0) to llvm_unreachable	2012-02-05 22:14:15 +00:00
PassRegistry.cpp	Cosmetic changes, as per Nick's review.	2011-09-29 16:46:47 +00:00
PrintModulePass.cpp	Now with fewer extraneous semicolons!	2010-10-07 22:25:06 +00:00
SymbolTableListTraitsImpl.h
Type.cpp	Cache the sized-ness of struct types, once we reach the steady state of	2012-03-07 02:33:09 +00:00
Use.cpp	Remove the AugmentedUse struct.	2011-06-20 14:12:33 +00:00
User.cpp	Add some missing anchors.	2011-12-01 08:00:17 +00:00
Value.cpp	Extend the inline cost calculation to account for bonuses due to	2012-03-14 23:19:53 +00:00
ValueSymbolTable.cpp	eliminate the Type::getDescription() method, using "<<" instead. This	2011-06-18 21:18:23 +00:00
ValueTypes.cpp	Convert assert(0) to llvm_unreachable	2012-02-05 22:14:15 +00:00
Verifier.cpp	llvm::SwitchInst	2012-03-11 06:09:17 +00:00