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LLVM backend for 6502
71,198 Commits 39 Branches 0 Tags 277 MiB
C++ 48.7%
LLVM 38.5%
Assembly 10.2%
C 0.9%
Python 0.4%
Other 1.2%
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Benjamin Kramer 0baa94a13b InstCombine: Turn icmp + sext into bitwise/integer ops when the input has only one unknown bit. 
int test1(unsigned x) { return (x&8) ? 0 : -1; }
int test3(unsigned x) { return (x&8) ? -1 : 0; }

before (x86_64):
_test1:
	andl	$8, %edi
	cmpl	$1, %edi
	sbbl	%eax, %eax
	ret
_test3:
	andl	$8, %edi
	cmpl	$1, %edi
	sbbl	%eax, %eax
	notl	%eax
	ret

after:
_test1:
	shrl	$3, %edi
	andl	$1, %edi
	leal	-1(%rdi), %eax
	ret
_test3:
	shll	$28, %edi
	movl	%edi, %eax
	sarl	$31, %eax
	ret

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128732 91177308-0d34-0410-b5e6-96231b3b80d8
2011-04-01 20:09:10 +00:00
autoconf Check that the AsmParser exists for the native target to enable initialization 2011-03-14 22:12:35 +00:00
bindings Fix compiling the ocaml kaleidoscope tutorials 2011-02-09 18:32:02 +00:00
cmake Fix assignment of -fPIC to CMAKE_C_FLAGS. Configure llvm-config.in.in 2011-04-01 19:36:06 +00:00
docs Pick better examples. "fpext float 3.1415 to double" won't parse because 3.1415 2011-03-31 18:20:19 +00:00
examples Remove PHINode::reserveOperandSpace(). Instead, add a parameter to 2011-03-30 11:28:46 +00:00
include Various Instructions' resizeOperands() methods are only used to grow the 2011-04-01 08:00:58 +00:00
lib InstCombine: Turn icmp + sext into bitwise/integer ops when the input has only one unknown bit. 2011-04-01 20:09:10 +00:00
projects Regen configure 2010-12-12 21:42:01 +00:00
runtime Implementation of path profiling. 2011-01-29 01:09:53 +00:00
test InstCombine: Turn icmp + sext into bitwise/integer ops when the input has only one unknown bit. 2011-04-01 20:09:10 +00:00
tools Fix assignment of -fPIC to CMAKE_C_FLAGS. Configure llvm-config.in.in 2011-04-01 19:36:06 +00:00
unittests While testing dragonegg I noticed that isCastable and getCastOpcode 2011-04-01 03:34:54 +00:00
utils Add annotations to tablegen-generated processor itineraries, or replace them with something meaningful. I want to be able to read and debug the generated tables. 2011-04-01 02:22:47 +00:00
website
.gitignore Cleanup and document .gitignore. 2010-12-17 17:22:50 +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 Supports building with a list of targets that does not contain 2011-03-23 17:42:13 +00:00
configure Check that the AsmParser exists for the native target to enable initialization 2011-03-14 22:12:35 +00:00
CREDITS.TXT Another git svn dcommit test. This time let's hope it doesn't kill my repo. 2010-12-10 14:45:10 +00:00
LICENSE.TXT 2010 is upon us. 2010-01-09 18:40:31 +00:00
llvm.spec.in
Makefile Merge System into Support. 2010-11-29 18:16:10 +00:00
Makefile.common
Makefile.config.in autoconf: Add --disable-embed-stdcxx to suppress linking libstdc++.a into llvm.dll with --enable-shared on Cygming. 2010-12-29 03:59:14 +00:00
Makefile.rules Makefile.rules: [PR2928] "make install" may install include files along explicit pattern, not to install CMake's building stuff. 2011-03-09 09:11:27 +00:00
ModuleInfo.txt Remove trailing space. This is just an excuse to poke the 2010-10-05 20:32:15 +00:00
README.txt Test commit. 2011-02-11 19:11:57 +00:00

README.txt 

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

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