Andrea Di Biagio 7ca0db442c [TTI] Teach the cost heuristic how to query TLI to check if a zext/trunc is 'free' for the target. ... Now that SimplifyCFG uses TTI for the cost heuristic, we can teach BasicTTIImpl how to query TLI in order to get a more accurate cost for truncates and zero-extends. Before this patch, the basic cost heuristic in TargetTransformInfoImplCRTPBase would have conservatively returned a 'default' TCC_Basic for all zero-extends, and TCC_Free for truncates on native types. This patch improves the heuristic so that we query TLI (if available) to get more accurate answers. If TLI is available, then methods 'isZExtFree' and 'isTruncateFree' can be used to check if a zext/trunc is free for the target. Added more test cases to SimplifyCFG/X86/speculate-cttz-ctlz.ll. With this change, SimplifyCFG is now able to speculate a 'cheap' cttz/ctlz immediately followed by a free zext/trunc. Differential Revision: http://reviews.llvm.org/D7585 llvm-svn: 228923		2015-02-12 14:17:24 +00:00
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ADT	BitVector: Remove manual bit width dispatch, this is handled by templates	2015-02-12 14:02:58 +00:00
Analysis	[TTI] Teach the cost heuristic how to query TLI to check if a zext/trunc is 'free' for the target.	2015-02-12 14:17:24 +00:00
AsmParser	Pass a MemoryBufferRef when we can avoid taking ownership.	2014-08-26 21:49:01 +00:00
Bitcode	IR: Assembly and bitcode for GenericDebugNode	2015-02-03 21:54:14 +00:00
CodeGen	[TTI] Teach the cost heuristic how to query TLI to check if a zext/trunc is 'free' for the target.	2015-02-12 14:17:24 +00:00
Config	Define HAVE_DIA_SDK on Windows when DIA is present.	2015-02-10 05:04:25 +00:00
DebugInfo	Rewrite llvm-pdbdump in terms of LLVMDebugInfoPDB.	2015-02-10 22:43:25 +00:00
ExecutionEngine	[Orc] Fix a bug in the LazyEmittingLayer - capture names by value (as	2015-02-10 07:35:39 +00:00
IR	Generalize DIBuilder's createReplaceableForwardDecl() to a more flexible	2015-02-11 17:45:05 +00:00
IRReader	Pass a MemoryBufferRef when we can avoid taking ownership.	2014-08-26 21:49:01 +00:00
LineEditor	[C++11] Replace OwningPtr with std::unique_ptr in places where it doesn't break the API.	2014-04-21 09:34:48 +00:00
Linker	Use the DiagnosticHandler to print diagnostics when reading bitcode.	2015-01-10 00:07:30 +00:00
LTO	[LTO API] split lto_codegen_compile to lto_codegen_optimize and	2015-02-03 18:39:15 +00:00
MC	[MC] Remove various unused MCAsmInfo parameters.	2015-02-05 00:58:51 +00:00
Object	dd the option, -link-opt-hints to llvm-objdump used with -macho to print the	2015-01-27 21:28:24 +00:00
Option	Add an overload of getLastArgNoClaim taking two OptSpecifiers.	2014-09-12 19:42:53 +00:00
ProfileData	InstrProf: Make CounterMappingRegions less confusing to construct	2015-02-03 23:59:33 +00:00
Support	MathExtras: Parametrize count(Trailing|Leading)Zeros on the type size.	2015-02-12 13:47:29 +00:00
TableGen	Make MultiClass::DefPrototypes own their Records to fix memory leaks.	2014-12-11 05:25:33 +00:00
Target	[CodeGen] Add hook/combine to form vector extloads, enabled on X86.	2015-02-05 18:31:02 +00:00
Transforms	Add missing include.	2015-02-04 18:16:53 +00:00
CMakeLists.txt	Remove llvm_headers_do_not_build for the benefit of XCode and Visual Studio users.	2014-08-14 00:51:47 +00:00
InitializePasses.h	Introduce print-memderefs to test isDereferenceablePointer	2015-02-06 01:46:42 +00:00
LinkAllIR.h	[cleanup] Move the Dominators.h and Verifier.h headers into the IR	2014-01-13 09:26:24 +00:00
LinkAllPasses.h	Introduce print-memderefs to test isDereferenceablePointer	2015-02-06 01:46:42 +00:00
module.modulemap	Bring the modules buildbot back to life after r226940.	2015-01-24 01:55:52 +00:00
module.modulemap.build	[modules] Add module maps for LLVM. These are not quite ready for prime-time	2014-05-21 02:46:14 +00:00
Pass.h	Revert "[PM] Add pass run listeners to the pass manager."	2014-05-15 17:49:20 +00:00
PassAnalysisSupport.h	[C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr.	2014-04-14 00:51:57 +00:00
PassInfo.h	Remove pimpl class from PassRegistry.	2014-06-12 16:06:51 +00:00
PassManager.h
PassRegistry.h	[PM] Remove an unused and rather expensive mapping from an analysis	2014-10-06 00:30:59 +00:00
PassSupport.h	Defining a new API for debug options that doesn't rely on static global cl::opts.	2014-10-15 21:54:35 +00:00