Jakob Stoklund Olesen 2710638db2 Evict a lighter single interference before attempting to split a live range. ...

Registers are not allocated strictly in spill weight order when live range
splitting and spilling has created new shorter intervals with higher spill
weights.

When one of the new heavy intervals conflicts with a single lighter interval,
simply evict the old interval instead of trying to split the heavy one.

The lighter interval is a better candidate for splitting, it has a smaller use
density.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125151 91177308-0d34-0410-b5e6-96231b3b80d8

2011-02-09 01:14:03 +00:00

..

Analysis

Add an m_Div pattern for matching either a udiv or an sdiv and use it

2011-02-07 09:36:32 +00:00

Archive

Archive: Fix temp path names.

2011-01-17 16:43:30 +00:00

AsmParser

implement .ll and .bc support for nsw/nuw on shl and exact on lshr/ashr.

2011-02-07 16:40:21 +00:00

Bitcode

implement .ll and .bc support for nsw/nuw on shl and exact on lshr/ashr.

2011-02-07 16:40:21 +00:00

CodeGen

Evict a lighter single interference before attempting to split a live range.

2011-02-09 01:14:03 +00:00

CompilerDriver

Support/Path: Deprecate PathV1::exists and replace all uses with PathV2::fs::exists.

2011-01-10 02:34:23 +00:00

ExecutionEngine

Fix libffi usage when it is on a custom path.

2011-01-28 16:49:05 +00:00

Linker

Correctly merge available_externally and regular definitions when they have

2011-02-01 05:33:52 +00:00

MC

Support for .ifdef / .ifndef in the assembler parser. Patch by Joerg Sonnenberger.

2011-02-08 22:29:56 +00:00

Object

Object: Fix type punned pointer issues by making DataRefImpl a union and using intptr_t.

2011-01-21 02:27:02 +00:00

Support

Don't open the file again in the gold plugin. To be able to do this, update

2011-02-08 22:40:47 +00:00

Target

Revert both r121082 (which broke a bunch of constant pool stuff) and r125074 (which worked around it). This should get us back to the old, correct behavior, though it will make the integrated assembler unhappy for the time being.

2011-02-08 22:39:40 +00:00

Transforms

Don't split any loop backedges, including backedges of loops other than

2011-02-08 00:55:13 +00:00

VMCore

fix comment change.

2011-02-07 20:03:14 +00:00

Makefile

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