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LLVM backend for 6502
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Wei Mi 61897e8564 Enable exitValue rewrite only when the cost of expansion is low. 
The patch evaluates the expansion cost of exitValue in indVarSimplify pass, and only does the rewriting when the expansion cost is low or loop can be deleted with the rewriting. It provides an option "-replexitval=" to control the default aggressiveness of the exitvalue rewriting. It also fixes some missing cases in SCEVExpander::isHighCostExpansionHelper to enhance the evaluation of SCEV expansion cost.

Differential Revision: http://reviews.llvm.org/D9800


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238507 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-28 21:49:07 +00:00
autoconf [omp] Actually provide a default OpenMP runtime -- libgomp for now. 2015-05-28 02:17:15 +00:00
bindings IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
cmake Try to fix the build with MSVC 2015 by disabling sized deallocation 2015-05-19 23:28:23 +00:00
docs Add some more detailed docs about the current state of Phabricator and 2015-05-27 07:20:46 +00:00
examples BrainF.cpp: Update CreateCall() according to r237624. 2015-05-19 06:50:19 +00:00
include Remove a trivial forwarding function. NFC. 2015-05-28 21:36:02 +00:00
lib Enable exitValue rewrite only when the cost of expansion is low. 2015-05-28 21:49:07 +00:00
projects build: make libunwind a proper project 2015-04-25 01:47:39 +00:00
test Enable exitValue rewrite only when the cost of expansion is low. 2015-05-28 21:49:07 +00:00
tools [llvm] Adding vdtor to fix warning. 2015-05-28 20:59:08 +00:00
unittests [Mips64] Add support for MCJIT for MIPS64r2 and MIPS64r6 2015-05-28 13:48:41 +00:00
utils Add support for the convergent flag at the MC and MachineInstr levels. 2015-05-28 18:33:39 +00:00
.arcconfig
.clang-format
.clang-tidy
.gitignore Ignore compile_commands.json only at the root of the tree. 2015-03-26 18:55:42 +00:00
CMakeLists.txt Enable solid lzma compression for cpack, decreases setup size by ~30% 2015-05-14 17:07:41 +00:00
CODE_OWNERS.TXT Added Andrey Churbanov as the owner of the OpenMP runtime library code 2015-05-05 20:17:53 +00:00
configure [omp] Actually provide a default OpenMP runtime -- libgomp for now. 2015-05-28 02:17:15 +00:00
CREDITS.TXT
LICENSE.TXT Update for a new year. 2015-03-12 01:25:29 +00:00
llvm.spec.in
LLVMBuild.txt
Makefile
Makefile.common
Makefile.config.in Deprecate in-source autotools builds 2015-05-04 02:04:54 +00:00
Makefile.rules Add support for SunOS function/data sections and associated 2015-03-03 20:54:29 +00:00
README.txt Revert test commit at revision 233535. 2015-03-30 12:39:03 +00:00

README.txt 

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

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Please see the documentation provided in docs/ for further
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