llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-07-23 16:30:00 +00:00

LLVM backend for 6502

Go to file

Evan Cheng bfcb305189 Change how dbg_value sdnodes are converted into machine instructions. Their placement should be determined by the relative order of incoming llvm instructions. The scheduler will now use the SDNode ordering information to determine where to insert them. A dbg_value instruction is inserted after the instruction with the last highest source order and before the instruction with the next highest source order. It will optimize the placement by inserting right after the instruction that produces the value if they have consecutive order numbers. Here is a theoretical example that illustrates why the placement is important. tmp1 = store tmp1 -> x ... tmp2 = add ... ... call ... store tmp2 -> x Now mem2reg comes along: tmp1 = dbg_value (tmp1 -> x) ... tmp2 = add ... ... call ... dbg_value (tmp2 -> x) When the debugger examine the value of x after the add instruction but before the call, it should have the value of tmp1. Furthermore, for dbg_value's that reference constants, they should not be emitted at the beginning of the block (since they do not have "producers"). This patch also cleans up how SDISel manages DbgValue nodes. It allow a SDNode to be referenced by multiple SDDbgValue nodes. When a SDNode is deleted, it uses the information to find the SDDbgValues and invalidate them. They are not deleted until the corresponding SelectionDAG is destroyed. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@99469 91177308-0d34-0410-b5e6-96231b3b80d8		2010-03-25 01:38:16 +00:00
autoconf	Force configuration of some projects before others. In particular, some	2010-03-19 21:31:39 +00:00
bindings	Add OCaml tutorial to the examples.	2010-03-08 19:32:27 +00:00
cmake	Tell Valgrind when we modify already-executed machine code so it knows	2010-03-15 04:57:55 +00:00
docs	Docuemntation corrections from John Myers.	2010-03-25 00:03:04 +00:00
examples	Fix the ocaml kaleidoscope tutorial to fix linking external libraries.	2010-03-21 23:15:13 +00:00
include	Change how dbg_value sdnodes are converted into machine instructions. Their placement should be determined by the relative order of incoming llvm instructions. The scheduler will now use the SDNode ordering information to determine where to insert them. A dbg_value instruction is inserted after the instruction with the last highest source order and before the instruction with the next highest source order. It will optimize the placement by inserting right after the instruction that produces the value if they have consecutive order numbers.	2010-03-25 01:38:16 +00:00
lib	Change how dbg_value sdnodes are converted into machine instructions. Their placement should be determined by the relative order of incoming llvm instructions. The scheduler will now use the SDNode ordering information to determine where to insert them. A dbg_value instruction is inserted after the instruction with the last highest source order and before the instruction with the next highest source order. It will optimize the placement by inserting right after the instruction that produces the value if they have consecutive order numbers.	2010-03-25 01:38:16 +00:00
projects	Testing subversion commit access	2010-02-23 15:11:17 +00:00
runtime	disable this for mingw as well, we really need a 'has no dynamic linking' predicate.	2010-03-06 18:54:37 +00:00
test	MC: Fix refacto in MCExpr evaluation, I mistakenly replaced a fragment address with a symbol address.	2010-03-25 01:03:17 +00:00
tools	Trim #includes.	2010-03-24 19:56:17 +00:00
unittests	another one	2010-03-18 18:59:08 +00:00
utils	add plumbing for handling multiple result nodes	2010-03-24 00:41:19 +00:00
website
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 options for using static runtime on MSVC++ build.	2010-03-18 13:52:05 +00:00
configure	Force configuration of some projects before others. In particular, some	2010-03-19 21:31:39 +00:00
CREDITS.TXT	Adding the MicroBlaze backend.	2010-02-23 19:15:24 +00:00
LICENSE.TXT	2010 is upon us.	2010-01-09 18:40:31 +00:00
llvm.spec.in
Makefile	modernize the do-all-for-me target to run lit	2010-03-21 22:23:02 +00:00
Makefile.common	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
Makefile.config.in	Rewrite makefiles to explicitly reference DESTDIR to fix bug 3153.	2010-03-04 20:56:19 +00:00
Makefile.rules	remove arm mode workaround for ARM host	2010-03-17 21:28:19 +00:00
ModuleInfo.txt	Patch to build llvm with srcdir != objdir from	2009-01-23 08:42:38 +00:00
README.txt	Give packagers some advice about how to build LLVM so it's useful to	2010-02-26 00:54:42 +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.

If you're writing a package for LLVM, see docs/Packaging.html for our
suggestions.