Jakob Stoklund Olesen ead06be02f Use readsWritesVirtualRegister instead of counting uses and defs when inserting
spills and reloads.

This means that a partial define of a register causes a reload so the other
parts of the register are preserved.

The reload can be prevented by adding an <imp-def> operand for the full
register. This is already done by the coalescer and live interval analysis where
relevant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105369 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-03 00:07:47 +00:00
2010-02-23 15:11:17 +00:00
2010-04-16 13:32:55 +00:00
2007-08-03 05:43:35 +00:00
2010-02-23 19:15:24 +00:00
2010-01-09 18:40:31 +00:00
2007-07-13 09:48:29 +00:00
2010-04-30 23:36:47 +00:00

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
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Mirror of official llvm git repository located at http://llvm.org/git/llvm. Updated every five minutes.
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