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LLVM backend for 6502
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Jakob Stoklund Olesen 43cda021d9 Fix inline cost predictions with SCIENCE. 
After running a batch of measurements, it is clear that the inliner metrics
need some adjustments:

Own argument bonus:       20 -> 5
Outgoing argument penalty: 0 -> 5
Alloca bonus:             10 -> 5
Constant instr bonus:      7 -> 5
Dead successor bonus:     40 -> 5*(avg instrs/block)

The new cost metrics are generaly 25 points higher than before, so we may need
to move thresholds.

With this change, InlineConstants::CallPenalty becomes a political correction:

if (!isa<IntrinsicInst>(II) && !callIsSmall(CS.getCalledFunction()))
  NumInsts += InlineConstants::CallPenalty + CS.arg_size();

The code size is accurately modelled by CS.arg_size(). CallPenalty is added
because calls tend to take a long time, so it may not be worth it to inline a
function with lots of calls.

All of the political corrections are in the InlineConstants namespace:
IndirectCallBonus, CallPenalty, LastCallToStaticBonus, ColdccPenalty,
NoreturnPenalty.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94615 91177308-0d34-0410-b5e6-96231b3b80d8
2010-01-26 23:21:56 +00:00
autoconf Remove unneeded checks from configure.ac. 2010-01-26 08:48:04 +00:00
bindings This corrects an error in the type of the Llvm.dispose_context function. 2010-01-24 00:25:09 +00:00
cmake Update CMake LibDeps 2010-01-22 18:14:14 +00:00
docs no need to implement these. 2010-01-25 20:37:36 +00:00
examples This example requires RTTI. 2010-01-25 00:45:01 +00:00
include Fix inline cost predictions with SCIENCE. 2010-01-26 23:21:56 +00:00
lib Fix inline cost predictions with SCIENCE. 2010-01-26 23:21:56 +00:00
projects Fix autoconf llvm srcdir location for generic projects. 2010-01-25 04:10:28 +00:00
runtime remove the random sampling framework, which is not maintained anymore. 2010-01-02 20:07:03 +00:00
test emit jump table an alias ".set" directives through MCStreamer as 2010-01-26 21:53:08 +00:00
tools Support -arch. 2010-01-26 14:55:44 +00:00
unittests Revert 94484. Re-disable unittests that need RTTI. 2010-01-26 19:04:37 +00:00
utils Escape double quotes in 'help'. 2010-01-26 14:55:04 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
Xcode Remove the IA-64 backend. 2009-07-24 00:30:09 +00:00
build-for-llvm-top.sh Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
CMakeLists.txt CMake: Add MCParser directory. 2010-01-22 02:04:33 +00:00
configure Regenerate configure. 2010-01-26 08:50:50 +00:00
CREDITS.TXT Add myself to the blame list. 2009-08-20 15:20:15 +00:00
LICENSE.TXT 2010 is upon us. 2010-01-09 18:40:31 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +00:00
Makefile For 'install-clang' target, also traverse tools/clang/lib/Runtime. 2010-01-20 00:43:07 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in Fix typos. Thanks to John Tytgat for noticing it! 2009-12-07 00:27:35 +00:00
Makefile.rules make -fno-rtti the default unless a directory builds with REQUIRES_RTTI. 2010-01-24 20:43:08 +00:00
ModuleInfo.txt Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
README.txt test commit. 2010-01-26 19:45:17 +00:00

README.txt 

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

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LLVM is open source software. You may freely distribute it under the terms of
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Please see the HTML documentation provided in docs/index.html for further
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