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
..
Analysis	[DSE] Remove no-data-layout-only type-based overlap checking	2014-10-17 11:56:00 +00:00
Assembler	Delete -std-compile-opts.	2014-10-16 20:00:02 +00:00
Bindings	Add llvm-go tool.	2014-10-23 02:33:23 +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 rsqrt (X86) to speed up reciprocal square root calcs	2014-10-24 17:02:16 +00:00
DebugInfo	Fix PR21189 -- Emit symbol subsection required to debug LLVM-built binaries with VS2012+	2014-10-24 01:27:45 +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	[asan-asm-instrumentation] Fixed memory accesses with rbp as a base or an index register.	2014-10-21 10:22:27 +00:00
Integer
JitListener	Revert "Revert "DI: Fold constant arguments into a single MDString""	2014-10-03 20:01:09 +00:00
Linker	Cleanup this test a bit.	2014-10-23 19:36:21 +00:00
LTO	LTO: Add missing target triple from r218784	2014-10-01 18:49:58 +00:00
MC	Update test/MC/ARM/coff-debugging-secrel.ll expectations to fix breakage caused by r220544	2014-10-24 06:24:07 +00:00
Object	Handle spaces and quotes in file names in MRI scripts.	2014-10-22 03:10:56 +00:00
Other	[lit] Parse all strings as UTF-8 rather than ASCII.	2014-09-12 16:46:05 +00:00
TableGen	[AVX512] Added intrinsics for VPCMPEQB and VPCMPEQW.	2014-09-30 11:32:22 +00:00
tools	PR21189: Teach llvm-readobj to dump bits of COFF symbol subsections required to debug using VS2012+	2014-10-23 22:25:31 +00:00
Transforms	Handle sqrt() shrinking in SimplifyLibCalls like any other call	2014-10-23 21:52:45 +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	Add llvm-go tool.	2014-10-23 02:33:23 +00:00
lit.site.cfg.in	Teach lit to filter the host LDFLAGS down from the build system and into	2014-10-21 00:36:28 +00:00
Makefile	Teach lit to filter the host LDFLAGS down from the build system and into	2014-10-21 00:36:28 +00:00
Makefile.tests
TestRunner.sh