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LLVM backend for 6502
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Chandler Carruth 69359ed45b [SDAG] When performing post-legalize DAG combining, run the legalizer 
over each node in the worklist prior to combining.

This allows the combiner to produce new nodes which need to go back
through legalization. This is particularly useful when generating
operands to target specific nodes in a post-legalize DAG combine where
the operands are significantly easier to express as pre-legalized
operations. My immediate use case will be PSHUFB formation where we need
to build a constant shuffle mask with a build_vector node.

This also refactors the relevant functionality in the legalizer to
support this, and updates relevant tests. I've spoken to the R600 folks
and these changes look like improvements to them. The avx512 change
needs to be investigated, I suspect there is a disagreement between the
legalizer and the DAG combiner there, but it seems a minor issue so
leaving it to be re-evaluated after this patch.

Differential Revision: http://reviews.llvm.org/D4564

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214020 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-26 05:49:40 +00:00
autoconf Drop the udis86 wrapper from llvm::sys 2014-07-17 20:05:29 +00:00
bindings [OCaml] Don't truncate constants over 32 bits in Llvm.const_int. 2014-07-22 13:55:20 +00:00
cmake Add LLVM_TOOLS_BINARY_DIR variable to LLVMConfig.cmake so clients 2014-07-22 17:48:51 +00:00
docs Add @llvm.assume, lowering, and some basic properties 2014-07-25 21:13:35 +00:00
examples Added LLVM_ENABLE_RTTI and LLVM_ENABLE_EH options that allow RTTI and EH 2014-07-22 15:41:18 +00:00
include [SDAG] When performing post-legalize DAG combining, run the legalizer 2014-07-26 05:49:40 +00:00
lib [SDAG] When performing post-legalize DAG combining, run the legalizer 2014-07-26 05:49:40 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test [SDAG] When performing post-legalize DAG combining, run the legalizer 2014-07-26 05:49:40 +00:00
tools llvm-uselistorder: Fix up LINK_COMPONENTS. 2014-07-25 21:33:18 +00:00
unittests IR/UseTest.cpp: Avoid std::to_string() to appease mingw32 bot. 2014-07-26 00:45:30 +00:00
utils [stack protector] Fix a potential security bug in stack protector where the 2014-07-25 19:31:34 +00:00
.arcconfig Updated phabricator server. 2014-04-07 03:57:04 +00:00
.clang-format Test commit. 2014-03-02 13:08:46 +00:00
.gitignore Add Polly to the ignored trees. 2014-06-25 13:13:36 +00:00
CMakeLists.txt [CMake] Introduce LLVM_SHLIB_OUTPUT_INTDIR. 2014-07-04 04:23:26 +00:00
CODE_OWNERS.TXT Claim AA generally as code owner 2014-07-25 16:45:10 +00:00
configure Touch configure to force clang's config.h.in reconfiguration on the build servers 2014-06-06 10:36:38 +00:00
CREDITS.TXT Update Credits. 2014-05-29 19:59:58 +00:00
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in
LLVMBuild.txt Remove the very substantial, largely unmaintained legacy PGO 2013-10-02 15:42:23 +00:00
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common Makefile.common: Update a description, s/Source/SOURCES/ , according to MakefileGuide.html#control-variables . 2012-12-07 01:43:23 +00:00
Makefile.config.in Track clang r213171 2014-07-16 16:50:34 +00:00
Makefile.rules [Make] Fix dependencies for td.expanded 2014-06-20 19:00:41 +00:00
README.txt Trivial test commit. 2014-04-26 19:05:45 +00:00

README.txt 

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