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LLVM backend for 6502
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fd87839a48
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Jakob Stoklund Olesen fd87839a48 Add TRI::getCommonSuperRegClass(). 
This function is a generalization of getMatchingSuperRegClass() to the
symmetric case where both sides are using a sub-register index. It will
find a super-register class and sub-register indexes that make this
diagram commute:

                                   PreA
                       SuperRC  ---------->  RCA

                          |                   |
                          |                   |
                     PreB |                   | SubA
                          |                   |
                          |                   |
                          V                   V

                         RCB    ----------> SubRC
                                   SubB

This can be used to coalesce copies like:

  %vreg1:sub16 = COPY %vreg2:sub16; GR64:%vreg1, GR32: %vreg2

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156317 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-07 19:14:58 +00:00
autoconf [build] Add build check for ::arc4random(). 2012-05-05 16:36:16 +00:00
bindings [python] Add negative MemoryBuffer testcase 2012-03-22 11:23:52 +00:00
cmake [build] Add build check for ::arc4random(). 2012-05-05 16:36:16 +00:00
docs Use correct variable in this example. Pointed out by waynix on IRC. 2012-05-03 15:25:19 +00:00
examples Remove llvm-ld and llvm-stub (which is only used by llvm-ld). 2012-04-19 19:27:54 +00:00
include Add TRI::getCommonSuperRegClass(). 2012-05-07 19:14:58 +00:00
lib Add TRI::getCommonSuperRegClass(). 2012-05-07 19:14:58 +00:00
projects Update all outdated autoconf files in the sample project. 2012-05-05 15:02:39 +00:00
runtime Switch to c-style comments in a C file. 2012-04-27 19:30:29 +00:00
test Fix a regression from r147481. This combine should only happen if there is a 2012-05-07 18:47:44 +00:00
tools Move the CodeExtractor utility to a dedicated header file / source file, 2012-05-04 10:18:49 +00:00
unittests SmallVector: Don't rely on having an assignment operator around in push_back for POD-like types. 2012-04-29 10:53:29 +00:00
utils TableGen: AsmMatcher diagnostic when missing instruction mnemonic. 2012-05-06 17:33:14 +00:00
.gitignore Add tools/lld to .gitignore. 2012-05-02 21:25:32 +00:00
CMakeLists.txt This patch adds a new NVPTX back-end to LLVM which supports code generation for NVIDIA PTX 3.0. This back-end will (eventually) replace the current PTX back-end, while maintaining compatibility with it. 2012-05-04 20:18:50 +00:00
configure [build] Add build check for ::arc4random(). 2012-05-05 16:36:16 +00:00
CREDITS.TXT Update the documentation of CellSPU, in case it gets removed in 3.1. 2012-04-29 20:00:55 +00:00
LICENSE.TXT Add YAML parser to Support. 2012-04-03 23:09:22 +00:00
llvm.spec.in Tidy up. s/Low Level Virtual Machine/LLVM/. 2012-01-25 22:00:23 +00:00
LLVMBuild.txt LLVMBuild: Introduce a common section which currently has a list of the 2011-12-12 22:45:54 +00:00
Makefile When cross compiling, install a host version of llvm-config. <rdar://11187889> 2012-04-19 23:19:55 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in Add profiling support for Intel Parallel Amplifier XE (VTune) for JITted code in LLVM. 2012-03-13 08:33:15 +00:00
Makefile.rules Remove llvm-ld and llvm-stub (which is only used by llvm-ld). 2012-04-19 19:27:54 +00:00
README.txt test commit 2012-03-20 13:12:38 +00:00

README.txt 

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

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