llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-10-03 08:55:51 +00:00

LLVM backend for 6502

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NAKAMURA Takumi e26874556b Reapply r165661, Patch by Shuxin Yang <shuxin.llvm@gmail.com>. Original message: The attached is the fix to radar://11663049. The optimization can be outlined by following rules: (select (x != c), e, c) -> select (x != c), e, x), (select (x == c), c, e) -> select (x == c), x, e) where the <c> is an integer constant. The reason for this change is that : on x86, conditional-move-from-constant needs two instructions; however, conditional-move-from-register need only one instruction. While the LowerSELECT() sounds to be the most convenient place for this optimization, it turns out to be a bad place. The reason is that by replacing the constant <c> with a symbolic value, it obscure some instruction-combining opportunities which would otherwise be very easy to spot. For that reason, I have to postpone the change to last instruction-combining phase. The change passes the test of "make check-all -C <build-root/test" and "make -C project/test-suite/SingleSource". Original message since r165661: My previous change has a bug: I negated the condition code of a CMOV, and go ahead creating a new CMOV using the ORIGINAL condition code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166017 91177308-0d34-0410-b5e6-96231b3b80d8		2012-10-16 06:28:34 +00:00
autoconf	Re-enable support for --program-prefix.	2012-10-01 18:40:32 +00:00
bindings	Fix the ocaml binding breakage from TargetData -> DataLayout changes.	2012-10-08 17:06:25 +00:00
cmake	[CMake] add_lit_testsuite: EXCLUDE_FROM_ALL excludes the test ${target} out of check-all.	2012-10-10 13:32:55 +00:00
docs	Fix a typo in bitcode docs, from 165814.	2012-10-15 16:47:58 +00:00
examples	ExceptionDemo.cpp: Use Function::setDoesNotReturn(). Attributes stuff was updated.	2012-10-12 14:11:48 +00:00
include	Cleanup whitespace.	2012-10-16 06:10:45 +00:00
lib	Reapply r165661, Patch by Shuxin Yang <shuxin.llvm@gmail.com>.	2012-10-16 06:28:34 +00:00
projects	Re-enable support for --program-prefix.	2012-10-01 18:40:32 +00:00
runtime	Place temporary LTO files into their own subdirectory.	2012-10-10 05:29:15 +00:00
test	Reapply r165661, Patch by Shuxin Yang <shuxin.llvm@gmail.com>.	2012-10-16 06:28:34 +00:00
tools	LTO also needs to initialize the TargetTransform infrastructure.	2012-10-15 22:50:02 +00:00
unittests	Fix a bug in the set(I,E)/reset(I,E) methods that I recently added. The boundary condition for checking if I and E were in the same word were incorrect, and, beyond that, the mask computation was not using a wide enough constant.	2012-10-16 06:04:27 +00:00
utils	Add an enum for the return and function indexes into the AttrListPtr object. This gets rid of some magic numbers.	2012-10-15 07:29:08 +00:00
.gitignore	Add extra vim swap file pattern	2012-10-09 23:48:34 +00:00
CMakeLists.txt	Removing dependency on third party library for Intel JIT event support.	2012-09-28 17:35:20 +00:00
CODE_OWNERS.TXT
configure	Re-enable support for --program-prefix.	2012-10-01 18:40:32 +00:00
CREDITS.TXT	Move TargetData to DataLayout.	2012-10-08 16:40:38 +00:00
LICENSE.TXT
llvm.spec.in
LLVMBuild.txt
Makefile	Remove dead variable.	2012-10-10 18:20:49 +00:00
Makefile.common
Makefile.config.in	Re-enable support for --program-prefix.	2012-10-01 18:40:32 +00:00
Makefile.rules	Use MACOSX_DEPLOYMENT_TARGET when it is set. <rdar://problem/12433905>	2012-10-12 21:48:14 +00:00
README.txt

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