llvm-6502

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Evan Cheng 0490dcb1b7 Add a smarter heuristic to determine when to coalesce a virtual register with a physical one. More specifically, it avoid tying a virtual register in the loop with a physical register defined / used outside the loop. When it determines it's not profitable, it will use the physical register as the allocation preference instead.

This is *not* turned on by default. Testing indicates this is just as likely to pessimize code. The main issue seems to be allocation preference doesn't work effectively. That will change once I've taught register allocator "swapping".


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70503 91177308-0d34-0410-b5e6-96231b3b80d8

2009-04-30 18:39:57 +00:00

autoconf

Support --with-llvmgccdir and friends in llvmc, take 2.

2009-04-21 19:46:10 +00:00

bindings

Fix the JIT bindings for ocaml.

2009-04-30 00:43:39 +00:00

cmake

CMake: Added notes pointing to the LLVM CMake documentation.

2009-04-04 22:52:02 +00:00

docs

Second attempt:

2009-04-29 00:15:41 +00:00

examples

silence a warning.

2009-04-15 00:16:05 +00:00

include

Make dataflow iteration possible on Value*, not only on User*: df_ext_iterator<Value*, SmallPtrSet<const Value*, 16> >

2009-04-30 17:09:22 +00:00

lib

Add a smarter heuristic to determine when to coalesce a virtual register with a physical one. More specifically, it avoid tying a virtual register in the loop with a physical register defined / used outside the loop. When it determines it's not profitable, it will use the physical register as the allocation preference instead.

2009-04-30 18:39:57 +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

Don't try to mix integers and pointers in an icmp instruction

2009-04-30 16:40:30 +00:00

tools

Allow a user of libLTO to specify the full pathname of the gcc executable to

2009-04-30 15:24:09 +00:00

unittests

Add tests for WeakVH and AssertingVH. These pointed out that the overloads for

2009-04-27 20:32:07 +00:00

utils

Rename the CurMultiClass formal parameter of TGParser::AddSubMultiClass

2009-04-30 18:26:19 +00:00

website

Prepare for "core" website.

2007-08-03 05:43:35 +00:00

win32

Update hand-crafted VC++ build.

2009-02-02 19:22:02 +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: Added notes pointing to the LLVM CMake documentation.

2009-04-04 22:52:02 +00:00

configure

Support --with-llvmgccdir and friends in llvmc, take 2.

2009-04-21 19:46:10 +00:00

CREDITS.TXT

Initial test commit

2009-04-28 06:15:00 +00:00

LICENSE.TXT

Another great year for LLVM!

2009-02-26 15:17:13 +00:00

llvm.spec.in

* llvm.spec.in: update blurb

2007-07-13 09:48:29 +00:00

Makefile

Use a bigger hammer to coerce subversion into english.

2009-04-24 17:00:03 +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

Support --with-llvmgccdir and friends in llvmc, take 2.

2009-04-21 19:46:10 +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.

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