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ee53ec02b6
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Kyle Butt ee53ec02b6 Codegen: [PPC] Fix PPCVSXFMAMutate to handle duplicates. 
The purpose of PPCVSXFMAMutate is to elide copies by changing FMA forms
on PPC.

    %vreg6<def> = COPY %vreg96
    %vreg6<def,tied1> = XSMADDASP %vreg6<tied0>, %vreg5<kill>, %vreg7
    ;v6 = v6 + v5 * v7

is replaced by

    %vreg5<def,tied1> = XSMADDMSP %vreg5<tied0>, %vreg7, %vreg96
    ;v5 = v5 * v7 + v96

This was broken in the case where the target register was also used as a
multiplicand. Fix this case by checking for it and replacing both uses
with the copied register.

    %vreg6<def> = COPY %vreg96
    %vreg6<def,tied1> = XSMADDASP %vreg6<tied0>, %vreg5<kill>, %vreg6
    ;v6 = v6 + v5 * v6

is replaced by

    %vreg5<def,tied1> = XSMADDMSP %vreg5<tied0>, %vreg96, %vreg96
    ;v5 = v5 * v96 + v96

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259617 91177308-0d34-0410-b5e6-96231b3b80d8
2016-02-03 01:41:09 +00:00
bindings Remove autoconf support 2016-01-26 21:29:08 +00:00
cmake Remove autoconf support 2016-01-26 21:29:08 +00:00
docs [libFuzzer] allow passing 1 or more files as individual inputs 2016-02-02 03:03:47 +00:00
examples Remove autoconf support 2016-01-26 21:29:08 +00:00
include DiagnosticInfoWithDebugLocBase: Appease Twine for now. 2016-02-03 00:09:22 +00:00
lib Codegen: [PPC] Fix PPCVSXFMAMutate to handle duplicates. 2016-02-03 01:41:09 +00:00
projects Remove autoconf support 2016-01-26 21:29:08 +00:00
resources
test Codegen: [PPC] Fix PPCVSXFMAMutate to handle duplicates. 2016-02-03 01:41:09 +00:00
tools Correct size calculations for ELF files 2016-02-02 21:41:49 +00:00
unittests [LCG] Build an edge abstraction for the LazyCallGraph and use it to 2016-02-02 03:57:13 +00:00
utils Remove utils/buildit 2016-02-02 21:56:16 +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 [GlobalISel] Add the proper cmake plumbing. 2016-01-20 20:58:56 +00:00
CODE_OWNERS.TXT [docs] Remove references to autotools build. 2016-01-30 01:10:15 +00:00
configure Remove autoconf support 2016-01-26 21:29:08 +00:00
CREDITS.TXT
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
README.txt Revert previous test commit. 2016-01-04 19:13:29 +00:00

README.txt 

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

This directory and its subdirectories contain source code for LLVM,
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 documentation provided in docs/ for further
assistance with LLVM, and in particular docs/GettingStarted.rst for getting
started with LLVM and docs/README.txt for an overview of LLVM's
documentation setup.

If you are writing a package for LLVM, see docs/Packaging.rst for our
suggestions.