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Evan Cheng 8b944d39b3 Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code.

e.g.
orl     $65536, 8(%rax)
=>
orb     $1, 10(%rax)

Since narrowing is not always a win, e.g. i32 -> i16 is a loss on x86, dag combiner consults with the target before performing the optimization.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72507 91177308-0d34-0410-b5e6-96231b3b80d8

2009-05-28 00:35:15 +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

Hopefully fix the build for people with ocaml.

2009-05-22 09:22:17 +00:00

cmake

CMake: Set LIBS on llvm-config so we can query the system libraries

2009-05-27 15:49:33 +00:00

docs

Remove border around table used for layout.

2009-05-24 02:46:06 +00:00

examples

silence a warning.

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

include

Added optimization that narrow load / op / store and the 'op' is a bit twiddling instruction and its second operand is an immediate. If bits that are touched by 'op' can be done with a narrower instruction, reduce the width of the load and store as well. This happens a lot with bitfield manipulation code.

2009-05-28 00:35:15 +00:00

lib

2009-05-28 00:35:15 +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

2009-05-28 00:35:15 +00:00

tools

CMake: Set LIBS on llvm-config so we can query the system libraries

2009-05-27 15:49:33 +00:00

unittests

Fix a compile warning.

2009-05-18 03:44:24 +00:00

utils

Propagate CPU string out of SubtargetFeatures

2009-05-23 19:50:50 +00:00

website

…

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: Added notes pointing to the LLVM CMake documentation.

2009-04-04 22:52:02 +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

…

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

For the new ar --plugin libLLVMgold.so to work we need libLTO linked with

2009-05-26 19:11:47 +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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