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LLVM backend for 6502
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200a8cef25
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Jakob Stoklund Olesen 200a8cef25 Also add <imp-use,kill> flags for redefined super-registers. 
For example:

  %vreg10:dsub_0<def,undef> = COPY %vreg1
  %vreg10:dsub_1<def> = COPY %vreg2

is rewritten as:

  %D2<def> = COPY %D0, %Q1<imp-def>
  %D3<def> = COPY %D1, %Q1<imp-use,kill>, %Q1<imp-def>

The first COPY doesn't care about the previous value of %Q1, so it
doesn't read that register.

The second COPY is a partial redefinition of %Q1, so it implicitly kills
and redefines that register.

This makes it possible to recognize instructions that can harmlessly
clobber the full super-register.  The write and don't read the
super-register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141139 91177308-0d34-0410-b5e6-96231b3b80d8
2011-10-05 00:01:48 +00:00
autoconf We're no longer going to bother supporting platforms that don't 2011-09-23 00:53:10 +00:00
bindings attempt to fix ocaml bindings: landing pads 2011-10-03 06:41:46 +00:00
cmake Rename LLVM_MULTITHREADED define and fix build without threads. 2011-09-19 20:43:23 +00:00
docs Tell people using the tutorial how to make it actually work. 2011-10-04 19:36:30 +00:00
examples Changed comments on foreign C++ exceptions (generated with type info 7), 2011-09-28 10:53:56 +00:00
include Teach the MC to output code/data region marker labels in MachO and ELF modes. These are used by disassemblers to provide better disassembly, particularly on targets like ARM Thumb that like to intermingle data in the TEXT segment. 2011-10-04 23:26:17 +00:00
lib Also add <imp-use,kill> flags for redefined super-registers. 2011-10-05 00:01:48 +00:00
projects Fix a ton of comment typos found by codespell. Patch by 2011-04-15 05:18:47 +00:00
runtime Fix for warnings: ignoring return value of ‘write’, declared with attribute warn_unused_result. 2011-09-22 17:33:24 +00:00
test Teach the MC to output code/data region marker labels in MachO and ELF modes. These are used by disassemblers to provide better disassembly, particularly on targets like ARM Thumb that like to intermingle data in the TEXT segment. 2011-10-04 23:26:17 +00:00
tools Update cmake list. 2011-10-04 19:38:16 +00:00
unittests The product of two chrec's can always be represented as a chrec. 2011-10-04 06:51:26 +00:00
utils Properly use const_iterator. 2011-10-04 20:18:39 +00:00
.gitignore Revert change made in .gitignore. 2011-09-24 01:37:58 +00:00
build-for-llvm-top.sh
CMakeLists.txt Move TableGen's parser and entry point into a library 2011-10-01 16:41:13 +00:00
configure We're no longer going to bother supporting platforms that don't 2011-09-23 00:53:10 +00:00
CREDITS.TXT Claimed. 2011-09-19 05:34:10 +00:00
LICENSE.TXT Happy new year. 2011-06-12 15:26:54 +00:00
llvm.spec.in
Makefile Move TableGen's parser and entry point into a library 2011-10-01 16:41:13 +00:00
Makefile.common
Makefile.config.in Remove the rest of the compiler checking from the top level configure 2011-09-21 00:53:42 +00:00
Makefile.rules More llvmc bits. Spotted by Benjamin on IRC. 2011-09-20 00:42:28 +00:00
ModuleInfo.txt
README.txt Test commit 2011-09-21 03:34:31 +00:00

README.txt 

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

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