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LLVM backend for 6502
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5b74e5abb8
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Chandler Carruth 5b74e5abb8 [SDAG] Begin simplifying the way in which the legalizer deletes nodes. 
This lifts the (very few) places the legalizer would delete dead nodes
into the outer loop around the legalizer. This is significantly simpler
because it doesn't require the legalizer itself to manage the iterator
validity, and it doesn't require the legalizer to be a DAG update
listener in order to remove things from the legalized set. It also makes
the interface much less contrived for the case of the legalizer running
inside the last phase of DAG combining.

I'm working on centralizing the deletion of nodes during both legalizing
and combining as much as possible. My hope is to remove the need for DAG
update listeners from the combiner next, which would remove a costly
virtual dispatch chain on every deletion. This in turn should allow us
to more aggressively delete DAG nodes during combining which will in
turn allow us to combine more aggressively by exposing the actual nodes
which have single users to the combine phases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214546 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-01 19:49:59 +00:00
autoconf [autoconf] Fixup s/3.5/3.6/. Clang's ident was 3.5.0svn in autoconf build. 2014-07-29 08:35:03 +00:00
bindings [OCaml] Don't truncate constants over 32 bits in Llvm.const_int. 2014-07-22 13:55:20 +00:00
cmake Emit a warning if llvm_map_components_to_libraries() is used noting that its 2014-07-28 13:36:50 +00:00
docs Add documentation for lit's --show-unsupported flag 2014-07-31 20:11:13 +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 Move virtual method out of line. 2014-08-01 18:49:24 +00:00
lib [SDAG] Begin simplifying the way in which the legalizer deletes nodes. 2014-08-01 19:49:59 +00:00
projects [cmake] Use the external project machinery for libcxxabi so that it can 2014-07-25 10:27:40 +00:00
test [FastISel][AArch64] Fold offset into the memory operation. 2014-08-01 19:40:16 +00:00
tools Use object::Archive::create instead of new object::Archive. 2014-08-01 18:31:17 +00:00
unittests [Debug Info] add DISubroutineType and its creation takes DITypeArray. 2014-07-28 22:24:06 +00:00
utils Make getNamedOperandIdx readonly 2014-08-01 17:00:27 +00:00
.arcconfig
.clang-format
.gitignore Add Polly to the ignored trees. 2014-06-25 13:13:36 +00:00
CMakeLists.txt Fix building with in-tree libc++abi on FreeBSD 2014-08-01 19:23:15 +00:00
CODE_OWNERS.TXT Claim AA generally as code owner 2014-07-25 16:45:10 +00:00
configure [autoconf] Fixup s/3.5/3.6/. Clang's ident was 3.5.0svn in autoconf build. 2014-07-29 08:35:03 +00:00
CREDITS.TXT
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Track clang r213171 2014-07-16 16:50:34 +00:00
Makefile.rules
README.txt

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