Sanjay Patel e7c966f067 Use rcpss/rcpps (X86) to speed up reciprocal calcs (PR21385). ... This is a first step for generating SSE rcp instructions for reciprocal calcs when fast-math allows it. This is very similar to the rsqrt optimization enabled in D5658 ( http://reviews.llvm.org/rL220570 ). For now, be conservative and only enable this for AMD btver2 where performance improves significantly both in terms of latency and throughput. We may never enable this codegen for Intel Core* chips because the divider circuits are just too fast. On SandyBridge, divss can be as fast as 10 cycles versus the 21 cycle critical path for the rcp + mul + sub + mul + add estimate. Follow-on patches may allow configuration of the number of Newton-Raphson refinement steps, add AVX512 support, and enable the optimization for more chips. More background here: http://llvm.org/bugs/show_bug.cgi?id=21385 Differential Revision: http://reviews.llvm.org/D6175 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221706 91177308-0d34-0410-b5e6-96231b3b80d8		2014-11-11 20:51:00 +00:00
..
Analysis	[X86] Custom lower UINT_TO_FP from v4f32 to v4i32, and for v8f32 to v8i32 if	2014-11-11 02:23:47 +00:00
Assembler	Use FileCheck in a few tests.	2014-11-06 15:05:51 +00:00
Bindings	[OCaml] Run tests twice, with ocamlc and ocamlopt (if available)	2014-11-03 09:50:53 +00:00
Bitcode	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
BugPoint	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
CodeGen	Use rcpss/rcpps (X86) to speed up reciprocal calcs (PR21385).	2014-11-11 20:51:00 +00:00
DebugInfo	Provide gmlt-like inline scope information in the skeleton CU to facilitate symbolication without needing the .dwo files	2014-11-04 22:12:25 +00:00
ExecutionEngine	[MCJIT] Defer application of AArch64 MachO GOT relocations until resolve time.	2014-10-21 23:41:15 +00:00
Feature	Delete -std-compile-opts.	2014-10-16 20:00:02 +00:00
FileCheck
Instrumentation	Base check on the section name, not the variable name.	2014-11-06 20:01:34 +00:00
Integer
JitListener	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
Linker	Copy externally_initialized in GlobalVariable::copyAttributesFrom.	2014-11-10 18:41:59 +00:00
LTO	LTO: Add missing target triple from r218784	2014-10-01 18:49:58 +00:00
MC	[mips] Add hardware register name "hwr_ulr" ($29)	2014-11-11 11:22:39 +00:00
Object	[yaml2obj] Support AArch64 relocations.	2014-11-10 23:02:03 +00:00
Other
SymbolRewriter	Transform: add SymbolRewriter pass	2014-11-07 21:32:08 +00:00
TableGen	[AVX512] Added intrinsics for VPCMPEQB and VPCMPEQW.	2014-09-30 11:32:22 +00:00
tools	llvm-objdump: Skip empty sections when dumping contents	2014-11-11 09:58:25 +00:00
Transforms	Addition to r216371 (SLP and Loop Vectorization) and r218607 where	2014-11-11 07:39:27 +00:00
Unit
Verifier	Extend the verifier to validate range metadata on calls and invokes.	2014-10-20 23:52:07 +00:00
YAMLParser
.clang-format
CMakeLists.txt	Make llvm-go test dependency optional.	2014-10-23 19:51:40 +00:00
lit.cfg	Only run the gold plugin tests if gold supports the targets we test with.	2014-11-11 05:27:12 +00:00
lit.site.cfg.in	[OCaml] [autoconf] Migrate to ocamlfind.	2014-10-30 08:29:45 +00:00
Makefile	[OCaml] [autoconf] Migrate to ocamlfind.	2014-10-30 08:29:45 +00:00
Makefile.tests
TestRunner.sh