llvm-6502

mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-08-25 16:29:20 +00:00

LLVM backend for 6502

Go to file

Jakob Stoklund Olesen 4662a9f270 Allow coalescing with reserved physregs in certain cases: When a virtual register has a single value that is defined as a copy of a reserved register, permit that copy to be joined. These virtual register are usually copies of the stack pointer: %vreg75<def> = COPY %ESP; GR32:%vreg75 MOV32mr %vreg75, 1, %noreg, 0, %noreg, %vreg74<kill> MOV32mi %vreg75, 1, %noreg, 8, %noreg, 0 MOV32mi %vreg75<kill>, 1, %noreg, 4, %noreg, 0 CALLpcrel32 ... Coalescing these virtual registers early decreases register pressure. Previously, they were coalesced by RALinScan::attemptTrivialCoalescing after register allocation was completed. The lower register pressure causes the mcinst-lowering-cmp0.ll test case to fail because it depends on linear scan spilling a particular register. I am deleting 2008-08-05-SpillerBug.ll because it is counting the number of instructions emitted, and its revision history shows the 'correct' count being edited many times. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128845 91177308-0d34-0410-b5e6-96231b3b80d8		2011-04-04 21:00:03 +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 typos on LLVM.cmake. Export LLVM_ON_UNIX & LLVM_ON_WIN32.	2011-04-03 16:12:38 +00:00
docs	Dragonegg release notes.	2011-04-04 11:09:08 +00:00
examples	Remove PHINode::reserveOperandSpace(). Instead, add a parameter to	2011-03-30 11:28:46 +00:00
include	Stop caching basic block index ranges now that SlotIndexes can keep up.	2011-04-04 15:32:15 +00:00
lib	Allow coalescing with reserved physregs in certain cases:	2011-04-04 21:00:03 +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	Allow coalescing with reserved physregs in certain cases:	2011-04-04 21:00:03 +00:00
tools	Update BreakpointPrinter to emit original function names only.	2011-04-04 19:51:17 +00:00
unittests	While testing dragonegg I noticed that isCastable and getCastOpcode	2011-04-01 03:34:54 +00:00
utils	Add support for the VIA PadLock instructions.	2011-04-04 16:58:13 +00:00
website
.gitignore	Cleanup and document .gitignore.	2010-12-17 17:22:50 +00:00
build-for-llvm-top.sh
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
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
README.txt	Test commit.	2011-02-11 19:11:57 +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.