Sanjay Patel a46f06efe2 Use rsqrt (X86) to speed up reciprocal square root calcs ... This is a first step for generating SSE rsqrt instructions for reciprocal square root calcs when fast-math is allowed. For now, be conservative and only enable this for AMD btver2 where performance improves significantly - for example, 29% on llvm/projects/test-suite/SingleSource/Benchmarks/BenchmarkGame/n-body.c (if we convert the data type to single-precision float). This patch adds a two constant version of the Newton-Raphson refinement algorithm to DAGCombiner that can be selected by any target via a parameter returned by getRsqrtEstimate().. See PR20900 for more details: http://llvm.org/bugs/show_bug.cgi?id=20900 Differential Revision: http://reviews.llvm.org/D5658 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220570 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-24 17:02:16 +00:00
..
ADT	[ADT] Add a 'find_as' operation to DenseSet.	2014-10-19 19:36:33 +00:00
Analysis	These functions are not actually defined for NDEBUG or !LLVM_DUMP_ENABLED, so guarding the declarations as well. NFC, silences MSVC warnings in release builds.	2014-10-24 15:16:39 +00:00
AsmParser
Bitcode	Spell out the template args for compilers having issues with the injected class	2014-09-15 16:13:33 +00:00
CodeGen	[DebugInfo] Remove LexicalScopes::isCurrentFunctionScope and CSE a use of LexicalScopes::getCurrentFunctionScope	2014-10-23 00:06:27 +00:00
Config	Re-land r219354: Use llvm-symbolizer to symbolize LLVM/Clang crash dumps.	2014-10-10 22:06:59 +00:00
DebugInfo	Constify input argument of RelocVisitor and DWARFContext constructors. NFC.	2014-10-20 20:28:51 +00:00
ExecutionEngine	[MCJIT] Turn the getSymbolAddress free function created in r218626 into a static	2014-10-01 04:11:13 +00:00
IR	Make getDISubprogram(const Function *F) available in LLVM	2014-10-23 23:46:28 +00:00
IRReader
LineEditor
Linker
LTO
MC	[MC] Attach labels to existing fragments instead of using a separate fragment	2014-10-22 22:38:06 +00:00
Object	[MCJIT] Temporarily revert r220245 - it broke several bots.	2014-10-21 00:24:02 +00:00
Option
ProfileData	InstrProf: Avoid linear search in a hot loop	2014-10-02 17:14:18 +00:00
Support	PR21189: Teach llvm-readobj to dump bits of COFF symbol subsections required to debug using VS2012+	2014-10-23 22:25:31 +00:00
TableGen	[TableGen] Fully resolve class-instance values before defs in multiclasses	2014-09-16 17:14:13 +00:00
Target	Use rsqrt (X86) to speed up reciprocal square root calcs	2014-10-24 17:02:16 +00:00
Transforms	Shrinkify libcalls: use float versions of double libm functions with fast-math (bug 17850)	2014-10-22 15:29:23 +00:00
CMakeLists.txt
InitializePasses.h	Add a new pass FunctionTargetTransformInfo. This pass serves as a	2014-09-18 00:34:14 +00:00
LinkAllIR.h
LinkAllPasses.h	Make AAMDNodes ctor and operator bool (!!!) explicit, mop up bugs and weirdness exposed by it.	2014-10-04 22:44:29 +00:00
module.modulemap	[modules] Stop excluding Support/Debug.h from the Support module. This header	2014-10-13 00:41:03 +00:00
module.modulemap.build
Pass.h
PassAnalysisSupport.h
PassInfo.h
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