6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-08-01 17:29:33 +00:00
Code Issues Projects Releases Wiki Activity
LLVM backend for 6502
47,007 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%
abc0199680
Go to file
Nate Begeman abc0199680 Adapt the x86 build_vector dagcombine to the current state of the legalizer. 
build vectors with i64 elements will only appear on 32b x86 before legalize.
Since vector widening occurs during legalize, and produces i64 build_vector 
elements, the dag combiner is never run on these before legalize splits them
into 32b elements.

Teach the build_vector dag combine in x86 back end to recognize consecutive 
loads producing the low part of the vector.

Convert the two uses of TLI's consecutive load recognizer to pass LoadSDNodes
since that was required implicitly.

Add a testcase for the transform.

Old:
	subl	$28, %esp
	movl	32(%esp), %eax
	movl	4(%eax), %ecx
	movl	%ecx, 4(%esp)
	movl	(%eax), %eax
	movl	%eax, (%esp)
	movaps	(%esp), %xmm0
	pmovzxwd	%xmm0, %xmm0
	movl	36(%esp), %eax
	movaps	%xmm0, (%eax)
	addl	$28, %esp
	ret

New:
	movl	4(%esp), %eax
	pmovzxwd	(%eax), %xmm0
	movl	8(%esp), %eax
	movaps	%xmm0, (%eax)
	ret




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72957 91177308-0d34-0410-b5e6-96231b3b80d8
2009-06-05 21:37:30 +00:00
autoconf Split the ENABLE_THREADS #define in two. Now ENABLE_THREADS indicates the ability to run multiple threads at once in the JIT, and requires only 2009-05-19 22:18:56 +00:00
bindings Give embedded metadata its own type instead of relying on EmptyStructTy. 2009-05-30 05:06:04 +00:00
cmake CMake: Use explicit dependencies for Xcode (as well as MSVC), to make 2009-06-04 19:53:37 +00:00
docs Split the Add, Sub, and Mul instruction opcodes into separate 2009-06-04 22:49:04 +00:00
examples silence a warning. 2009-04-15 00:16:05 +00:00
include Adapt the x86 build_vector dagcombine to the current state of the legalizer. 2009-06-05 21:37:30 +00:00
lib Adapt the x86 build_vector dagcombine to the current state of the legalizer. 2009-06-05 21:37:30 +00:00
projects Revert r67655 and r67656, as they are breaking the build. I'm 2009-03-25 00:52:11 +00:00
runtime Drop toy GC runtime. 2009-03-02 03:46:48 +00:00
test Adapt the x86 build_vector dagcombine to the current state of the legalizer. 2009-06-05 21:37:30 +00:00
tools Add new function attribute - noredzone. 2009-06-04 22:05:33 +00:00
unittests Give embedded metadata its own type instead of relying on EmptyStructTy. 2009-05-30 05:06:04 +00:00
utils Split the Add, Sub, and Mul instruction opcodes into separate 2009-06-04 22:49:04 +00:00
website Prepare for "core" website. 2007-08-03 05:43:35 +00:00
win32 Add a new codegen pass that normalizes dwarf exception handling 2009-05-22 20:36:31 +00:00
Xcode Remove Stacker.html from Xcode project. 2008-10-14 23:23:59 +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: Use explicit dependencies for Xcode (as well as MSVC), to make 2009-06-04 19:53:37 +00:00
configure Split the ENABLE_THREADS #define in two. Now ENABLE_THREADS indicates the ability to run multiple threads at once in the JIT, and requires only 2009-05-19 22:18:56 +00:00
CREDITS.TXT Use latin symbols. I was told not everybody has a UTF-8 capable editor. 2009-05-23 20:40:47 +00:00
LICENSE.TXT Now that we have atomics support properly detected by configure, 2009-05-19 00:08:29 +00:00
llvm.spec.in * llvm.spec.in: update blurb 2007-07-13 09:48:29 +00:00
Makefile Change 'make install' to install tblgen, for better support of out-of-tree targets, 2009-05-08 17:32:47 +00:00
Makefile.common Removed trailing whitespace from Makefiles. 2009-01-09 16:44:42 +00:00
Makefile.config.in Add a --enable-profiling option to configure to build Debug+Profile and 2009-04-17 14:49:22 +00:00
Makefile.rules On platforms like Sparc64 you need to pass -r to 2009-06-05 15:05:19 +00:00
ModuleInfo.txt Patch to build llvm with srcdir != objdir from 2009-01-23 08:42:38 +00:00
README.txt README.txt: test commit w/blank line appended 2009-03-23 21:00:45 +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.