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LLVM backend for 6502
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Tim Northover 0eb313be18 ARM64: use regalloc-friendly COPY_TO_REGCLASS for bitcasts 
The previous patterns directly inserted FMOV or INS instructions into
the DAG for scalar_to_vector & bitconvert patterns. This is horribly
inefficient and can generated lots more GPR <-> FPR register traffic
than necessary.

It's much better to emit instructions the register allocator
understands so it can coalesce the copies when appropriate.

It led to at least one ISelLowering hack to avoid the problems, which
was incorrect for v1i64 (FPR64 has no dsub). It can now be removed
entirely.

This should also fix PR19331.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205616 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-04 09:03:09 +00:00
autoconf ARM64: initial backend import 2014-03-29 10:18:08 +00:00
bindings
cmake ARM64: initial backend import 2014-03-29 10:18:08 +00:00
docs Stack map docs. Remove some stray markup. 2014-04-03 07:08:21 +00:00
examples Fix warnings about an variable only used in asserts. 2014-03-06 06:35:46 +00:00
include Make consistent use of MCPhysReg instead of uint16_t throughout the tree. 2014-04-04 05:16:06 +00:00
lib ARM64: use regalloc-friendly COPY_TO_REGCLASS for bitcasts 2014-04-04 09:03:09 +00:00
projects Remove projects/sample. 2014-03-12 22:40:22 +00:00
test ARM64: use regalloc-friendly COPY_TO_REGCLASS for bitcasts 2014-04-04 09:03:09 +00:00
tools Revert "Fix a nomenclature error in llvm-nm." 2014-04-03 00:19:35 +00:00
unittests MCJIT: ensure that cygwin is identified properly 2014-03-31 23:42:23 +00:00
utils Make consistent use of MCPhysReg instead of uint16_t throughout the tree. 2014-04-04 05:16:06 +00:00
.arcconfig
.clang-format
.gitignore Remove projects/sample. 2014-03-12 22:40:22 +00:00
CMakeLists.txt Add ability to disable building LLVM utils 2014-04-02 22:49:58 +00:00
CODE_OWNERS.TXT ARM Linux support 2014-04-02 23:03:28 +00:00
configure ARM64: initial backend import 2014-03-29 10:18:08 +00:00
CREDITS.TXT
LICENSE.TXT Remove projects/sample. 2014-03-12 22:40:22 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile [configure/make] Propagate names of build host tools when making BuildTools 2014-03-25 21:45:41 +00:00
Makefile.common
Makefile.config.in Add a --enable-clang-plugin-support option to configure. 2014-03-10 16:58:35 +00:00
Makefile.rules Use -std=gnu++11 on cygwin and mingw. 2014-03-12 20:01:15 +00:00
README.txt

README.txt 

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