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Sanjay Patel e4e5cf5a66 make reciprocal estimate code generation more flexible by adding command-line options (3rd try)
The first try (r238051) to land this was reverted due to ExecutionEngine build failure;
that was hopefully addressed by r238788.

The second try (r238842) to land this was reverted due to BUILD_SHARED_LIBS failure;
that was hopefully addressed by r238953.

This patch adds a TargetRecip class for processing many recip codegen possibilities.
The class is intended to handle both command-line options to llc as well
as options passed in from a front-end such as clang with the -mrecip option.

The x86 backend is updated to use the new functionality.
Only -mcpu=btver2 with -ffast-math should see a functional change from this patch.
All other x86 CPUs continue to *not* use reciprocal estimates by default with -ffast-math.

Differential Revision: http://reviews.llvm.org/D8982



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239001 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-04 01:32:35 +00:00
autoconf [omp] Actually provide a default OpenMP runtime -- libgomp for now. 2015-05-28 02:17:15 +00:00
bindings IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
cmake [CMake] Revert commits r238740/r238741 for embedding Windows version info. 2015-06-01 13:40:14 +00:00
docs [IR/AsmWriter] Output escape sequences if the first character isdigit() 2015-06-02 21:25:08 +00:00
examples BrainF.cpp: Update CreateCall() according to r237624. 2015-05-19 06:50:19 +00:00
include make reciprocal estimate code generation more flexible by adding command-line options (3rd try) 2015-06-04 01:32:35 +00:00
lib make reciprocal estimate code generation more flexible by adding command-line options (3rd try) 2015-06-04 01:32:35 +00:00
projects build: make libunwind a proper project 2015-04-25 01:47:39 +00:00
test make reciprocal estimate code generation more flexible by adding command-line options (3rd try) 2015-06-04 01:32:35 +00:00
tools [Object, MachO] Introduce MachOObjectFile::load_commands() range iterator. 2015-06-03 22:19:36 +00:00
unittests YAML traits need to be in the llvm::yaml namespace. 2015-05-29 18:14:55 +00:00
utils [TableGen] Rename ListInit::getSize to just 'size' to be more consistent. 2015-06-02 04:15:57 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore
CMakeLists.txt Enable solid lzma compression for cpack, decreases setup size by ~30% 2015-05-14 17:07:41 +00:00
CODE_OWNERS.TXT Added Andrey Churbanov as the owner of the OpenMP runtime library code 2015-05-05 20:17:53 +00:00
configure [omp] Actually provide a default OpenMP runtime -- libgomp for now. 2015-05-28 02:17:15 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Deprecate in-source autotools builds 2015-05-04 02:04:54 +00:00
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README.txt

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