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
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CostTable.h
Target.td	Remove unused field from Operand	2014-10-09 19:15:18 +00:00
TargetCallingConv.h
TargetCallingConv.td	[mips] Add CCValAssign::[ASZ]ExtUpper and CCPromoteToUpperBitsInType and handle struct's correctly on big-endian N32/N64 return values.	2014-09-25 12:15:05 +00:00
TargetFrameLowering.h
TargetInstrInfo.h	[AAarch64] Optimize CSINC-branch sequence	2014-10-14 23:07:53 +00:00
TargetIntrinsicInfo.h	Trailing whitespace.	2014-07-23 00:42:52 +00:00
TargetItinerary.td
TargetLibraryInfo.h	PR21145: Teach LLVM about C++14 sized deallocation functions.	2014-10-03 20:17:06 +00:00
TargetLowering.h	Use rsqrt (X86) to speed up reciprocal square root calcs	2014-10-24 17:02:16 +00:00
TargetLoweringObjectFile.h
TargetMachine.h	Target: Fix build breakage.	2014-09-26 02:57:05 +00:00
TargetOpcodes.h	[stack protector] Fix a potential security bug in stack protector where the	2014-07-25 19:31:34 +00:00
TargetOptions.h	Satiate the sanitizer build bot	2014-08-21 20:09:15 +00:00
TargetRegisterInfo.h	Revert 202433 - Provide a target override for the latest regalloc heuristic	2014-10-03 12:20:53 +00:00
TargetSchedule.td
TargetSelectionDAG.td	Add minnum / maxnum intrinsics	2014-10-21 23:00:20 +00:00
TargetSelectionDAGInfo.h	Trailing whitespace.	2014-07-23 00:42:52 +00:00
TargetSubtargetInfo.h	[PBQP] Replace PBQPBuilder with composable constraints (PBQPRAConstraint).	2014-10-09 18:20:51 +00:00