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Chad Rosier 3127a19140 The Neon VCVT (between floating-point and fixed-point, Advanced SIMD) 
instructions can be used to match combinations of multiply/divide and VCVT 
(between floating-point and integer, Advanced SIMD).  Basically the VCVT 
immediate operand that specifies the number of fraction bits corresponds to a 
floating-point multiply or divide by the corresponding power of 2.

For example, VCVT (floating-point to fixed-point, Advanced SIMD) can replace a 
combination of VMUL and VCVT (floating-point to integer) as follows:

Example (assume d17 = <float 8.000000e+00, float 8.000000e+00>):
  vmul.f32        d16, d17, d16
  vcvt.s32.f32    d16, d16
becomes:
  vcvt.s32.f32    d16, d16, #3

Similarly, VCVT (fixed-point to floating-point, Advanced SIMD) can replace a 
combinations of VCVT (integer to floating-point) and VDIV as follows:

Example (assume d17 = <float 8.000000e+00, float 8.000000e+00>):
  vcvt.f32.s32    d16, d16
  vdiv.f32        d16, d17, d16
becomes:
  vcvt.f32.s32    d16, d16, #3

llvm-svn: 133813
2011-06-24 19:23:04 +00:00
autoconf build/configure: Add support for --with-extra-ld-options flag (to provide extra 2011-06-16 22:30:38 +00:00
bindings Fix compiling the ocaml kaleidoscope tutorials 2011-02-09 18:32:02 +00:00
cmake remove CMake mode_t define 2011-06-23 12:21:33 +00:00
docs Document nonlazybind. 2011-06-16 16:03:13 +00:00
examples Modify comment. 2011-06-09 20:11:46 +00:00
include Starting to refactor Target to separate out code that's needed to fully describe 2011-06-24 01:44:41 +00:00
lib The Neon VCVT (between floating-point and fixed-point, Advanced SIMD) 2011-06-24 19:23:04 +00:00
projects Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
runtime Fix build for (some versions of?) MinGW. Patch by Ruben Van Boxem. 2011-06-23 18:24:27 +00:00
test The Neon VCVT (between floating-point and fixed-point, Advanced SIMD) 2011-06-24 19:23:04 +00:00
tools Remove some unnecessary uses of c_str(). 2011-06-21 15:36:24 +00:00
unittests Fix the implementation of ConstantRange::sub(ConstantRange). Patch by Xi Wang! 2011-06-22 21:13:46 +00:00
utils Make the generated InitXXXMCRegisterInfo function "static inline", so it doesn't get emitted into multiple object files. 2011-06-24 11:03:31 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
.gitignore Ignore Vim swap files 2011-05-31 21:54:28 +00:00
build-for-llvm-top.sh Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
CMakeLists.txt Rename profile_rt.so to libprofile_rt.so under configure+make (it already was 2011-04-29 02:12:06 +00:00
configure Regenerate configure. 2011-06-16 22:30:41 +00:00
CREDITS.TXT Another git svn dcommit test. This time let's hope it doesn't kill my repo. 2010-12-10 14:45:10 +00:00
LICENSE.TXT Happy new year. 2011-06-12 15:26:54 +00:00
llvm.spec.in
Makefile Install libprofile_rt.dylib where it's more available for gcov support. 2011-06-10 21:47:14 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in build/configure: Add support for --with-extra-ld-options flag (to provide extra 2011-06-16 22:30:38 +00:00
Makefile.rules Starting to refactor Target to separate out code that's needed to fully describe 2011-06-24 01:44:41 +00:00
ModuleInfo.txt Remove trailing space. This is just an excuse to poke the 2010-10-05 20:32:15 +00:00
README.txt reverting test commit 2011-05-12 17:38:08 +00:00

README.txt 

Low Level Virtual Machine (LLVM)
================================

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the HTML documentation provided in docs/index.html for further
assistance with LLVM.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.