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LLVM backend for 6502
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0a39d4e4c8
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Andrew Trick 0a39d4e4c8 misched: Added ScoreboardHazardRecognizer. 
The Hazard checker implements in-order contraints, or interlocked
resources. Ready instructions with hazards do not enter the available
queue and are not visible to other heuristics.

The major code change is the addition of SchedBoundary to encapsulate
the state at the top or bottom of the schedule, including both a
pending and available queue.

The scheduler now counts cycles in sync with the hazard checker. These
are minimum cycle counts based on known hazards.

Targets with no itinerary (x86_64) currently remain at cycle 0. To fix
this, we need to provide some maximum issue width for all targets. We
also need to add the concept of expected latency vs. minimum latency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157427 91177308-0d34-0410-b5e6-96231b3b80d8
2012-05-24 22:11:09 +00:00
autoconf Remove the PTX back-end and all of its artifacts (triple, etc.) 2012-05-24 21:38:21 +00:00
bindings [python] Add negative MemoryBuffer testcase 2012-03-22 11:23:52 +00:00
cmake Fix how CMake appends -m32 to linker command-lines 2012-05-23 18:42:02 +00:00
docs Typo. Patch by Nicklas Bo Jensen <nbjensen@gmail.com>. 2012-05-24 21:17:47 +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 misched: Added ScoreboardHazardRecognizer. 2012-05-24 22:11:09 +00:00
lib misched: Added ScoreboardHazardRecognizer. 2012-05-24 22:11:09 +00:00
projects Remove the PTX back-end and all of its artifacts (triple, etc.) 2012-05-24 21:38:21 +00:00
runtime Switch to c-style comments in a C file. 2012-04-27 19:30:29 +00:00
test Fix for CHECK-NOT misspelling. 2012-05-24 22:08:29 +00:00
tools Plug a leak when using MCJIT. 2012-05-20 17:24:08 +00:00
unittests Remove the PTX back-end and all of its artifacts (triple, etc.) 2012-05-24 21:38:21 +00:00
utils Teach tblgen's set theory "sequence" operator to support an optional stride operand. 2012-05-24 21:37:08 +00:00
.gitignore Add tools/lld to .gitignore. 2012-05-02 21:25:32 +00:00
CMakeLists.txt Remove the PTX back-end and all of its artifacts (triple, etc.) 2012-05-24 21:38:21 +00:00
configure Remove the PTX back-end and all of its artifacts (triple, etc.) 2012-05-24 21:38:21 +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 Do not install llvm-config-host for cross-builds of clang. rdar://11317847 2012-05-09 00:07:02 +00:00
Makefile.common [docs] Remove unsupported references to ExtraSource variable. 2012-05-15 21:32:27 +00:00
Makefile.config.in - Added ExecutionEngine/MCJIT tests 2012-05-17 21:07:47 +00:00
Makefile.rules llvm-ld does not exist anymore, use llvm-link instead. 2012-05-23 20:34:19 +00:00
README.txt Testing commit access 2012-05-24 14:20:13 +00:00

README.txt 

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

This directory and its subdirectories contain source code for the Low Level
Virtual Machine, a toolkit for the construction of highly optimized compilers,
optimizers, and runtime environments.

LLVM is open source software. You may freely distribute it under the terms of
the license agreement found in LICENSE.txt.

Please see the HTML documentation provided in docs/index.html for further
assistance with LLVM.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.