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LLVM backend for 6502
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c5f611404c
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Filipe Cabecinhas c5f611404c Convert some X86 blendv* intrinsics into IR. 
Summary:
Implemented an InstCombine transformation that takes a blendv* intrinsic
call and translates it into an IR select, if the mask is constant.

This will eventually get lowered into blends with immediates if possible,
or pblendvb (with an option to further optimize if we can transform the
pblendvb into a blend+immediate instruction, depending on the selector).
It will also enable optimizations by the IR passes, which give up on
sight of the intrinsic.

Both the transformation and the lowering of its result to asm got shiny
new tests.

The transformation is a bit convoluted because of blendvp[sd]'s
definition:

Its mask is a floating point value! This forces us to convert it and get
the highest bit. I suppose this happened because the mask has type
__m128 in Intel's intrinsic and v4sf (for blendps) in gcc's builtin.

I will send an email to llvm-dev to discuss if we want to change this or
not.

Reviewers: grosbach, delena, nadav

Differential Revision: http://reviews.llvm.org/D3859

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209643 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-27 03:42:20 +00:00
autoconf AArch64/ARM64: move ARM64 into AArch64's place 2014-05-24 12:50:23 +00:00
bindings [OCaml] Add an ocamlfind package llvm.all_backends. 2014-05-01 21:00:52 +00:00
cmake AArch64/ARM64: move ARM64 into AArch64's place 2014-05-24 12:50:23 +00:00
docs Fix link. 2014-05-26 21:30:40 +00:00
examples Try to fix the msvc build. 2014-04-29 23:37:02 +00:00
include Make the LoopRotate pass's maximum header size configurable both programmatically 2014-05-26 08:58:51 +00:00
lib Convert some X86 blendv* intrinsics into IR. 2014-05-27 03:42:20 +00:00
projects
test Convert some X86 blendv* intrinsics into IR. 2014-05-27 03:42:20 +00:00
tools tools: avoid use of std::function 2014-05-25 21:37:59 +00:00
unittests Use std::unique_ptr instead of OwningPtr in the MemoryBuffer unittests. 2014-05-18 21:01:46 +00:00
utils Teach the table generated emitPseudoExpansionLowering function to not emit a switch statement containing only a default statement (and no cases). Updated some of the code to use range-based for loops as well. No functional changes. 2014-05-23 15:33:39 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format
.gitignore
CMakeLists.txt AArch64/ARM64: move ARM64 into AArch64's place 2014-05-24 12:50:23 +00:00
CODE_OWNERS.TXT ARM Linux support 2014-04-02 23:03:28 +00:00
configure AArch64/ARM64: move ARM64 into AArch64's place 2014-05-24 12:50:23 +00:00
CREDITS.TXT Test commit. 2014-04-10 22:25:51 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in
Makefile.rules autoconf: Fix libLLVM-Major-Minor-Patch.so symlink 2014-05-15 19:50:25 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +00:00

README.txt 

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

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