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Fork of llvm with experimental commits and workarounds for RPCS3
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Michael Kuperstein 493cb3070b [X86] Improve shift combining 
This folds (ashr (shl a, [56,48,32,24,16]), SarConst)
into       (shl, (sext (a), [56,48,32,24,16] - SarConst))
or into    (lshr, (sext (a), SarConst - [56,48,32,24,16]))
depending on sign of (SarConst - [56,48,32,24,16])

sexts in X86 are MOVs.
The MOVs have the same code size as above SHIFTs (only SHIFT by 1 has lower code size).
However the MOVs have 2 advantages to SHIFTs on x86:
1. MOVs can write to a register that differs from source.
2. MOVs accept memory operands.

This fixes PR24373.

Patch by: evgeny.v.stupachenko@intel.com
Differential Revision: http://reviews.llvm.org/D13161

llvm-svn: 255761
2015-12-16 11:22:37 +00:00
autoconf [OPENMP] Make -fopenmp to turn on OpenMP support by default. 2015-12-10 05:45:58 +00:00
bindings Fix llvm-config to adapt to the install environment. 2015-11-09 23:15:38 +00:00
cmake [CMake] Add LLVM_BUILD_INSTRUMENTED option to enable building with -fprofile-instr-generate 2015-12-10 21:19:07 +00:00
docs [IR] Add support for floating pointer atomic loads and stores 2015-12-16 00:49:36 +00:00
examples [Orc] Fix Kaleidoscope example for change in r254693. 2015-12-04 02:32:32 +00:00
include [SectionMemoryManager] Make better use of virtual memory 2015-12-16 11:13:23 +00:00
lib [X86] Improve shift combining 2015-12-16 11:22:37 +00:00
projects [CMake] Disable adding the test suite as a projects subdirectory 2015-10-28 18:36:56 +00:00
resources In MSVC builds embed a VERSIONINFO resource in our exe and DLL files. 2015-06-12 15:58:29 +00:00
test [X86] Improve shift combining 2015-12-16 11:22:37 +00:00
tools [sancov] blacklist support. 2015-12-16 00:31:48 +00:00
unittests [llvm-profdata] Add support for weighted merge of profile data (2nd try) 2015-12-15 17:37:09 +00:00
utils [X86] Part 2 to fix x86-64 fp128 calling convention. 2015-12-14 22:08:36 +00:00
.arcconfig
.clang-format
.clang-tidy adding readability-identifier-naming to llvm clang-tidy configuration. 2015-12-08 17:44:51 +00:00
.gitignore Minor updates to gitignore so that symlinks are ignored in the projects dir. 2015-07-07 20:24:58 +00:00
CMakeLists.txt [CMake] Add option LLVM_EXTERNALIZE_DEBUGINFO 2015-12-03 18:45:39 +00:00
CODE_OWNERS.TXT Friendly takeover of the Hexagon backend 2015-12-03 17:07:12 +00:00
configure [OPENMP] Make -fopenmp to turn on OpenMP support by default. 2015-12-10 05:45:58 +00:00
CREDITS.TXT [WebAssembly] Initial WebAssembly backend 2015-06-29 23:51:55 +00:00
LICENSE.TXT
llvm.spec.in [Sparc] Implement i64 load/store support for 32-bit sparc. 2015-08-10 19:11:39 +00:00
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in We're actually -Wmissing-field-initializers clean thanks to the cmake 2015-08-07 16:44:47 +00:00
Makefile.rules Create Makefile variables for 'share' and 'libexec' 2015-11-09 16:10:00 +00:00
README.txt Revert previous test commit. 2015-12-11 07:40:25 +00:00

README.txt 

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

This directory and its subdirectories contain source code for LLVM,
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Please see the documentation provided in docs/ for further
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If you are writing a package for LLVM, see docs/Packaging.rst for our
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