Chris Lattner a958cbfe36 Disable folding sext(trunc(x)) -> x (and other similar cast/cast cases) when the ...

trunc has multiple uses.  Codegen is not able to coalesce the subreg case 
correctly and so this leads to higher register pressure and spilling (see PR5997).

This speeds up 256.bzip2 from 8.60 -> 8.04s on my machine, ~7%.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93200 91177308-0d34-0410-b5e6-96231b3b80d8

2010-01-11 22:45:25 +00:00

..

Analysis

Respond to Chris' review:

2010-01-11 07:45:19 +00:00

Archive

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AsmParser

Consolidate ConvertGlobalValIDToValue, ConvertGlobalOrMetadataValIDToValue, and ConvertValIDToValue into a more powerful ConvertValIDToValue() that does all three's work

2010-01-11 22:31:58 +00:00

Bitcode

s/NextValueNo/NextMDValueNo while processing metadata.

2010-01-11 18:52:33 +00:00

CodeGen

Avoid adding PHI arguments for a predecessor that has gone away when a BRCOND was constant folded.

2010-01-11 21:02:33 +00:00

CompilerDriver

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ExecutionEngine

"In order to ease automatic bindings generation, it would be helpful if boolean values were distinguishable from integers. The attached patch introduces "typedef int LLVMBool;", and uses LLVMBool instead of int throughout the C API, wherever a boolean value is called for."

2010-01-09 22:27:07 +00:00

Linker

Fixed linking of modules containing aliases to constant bitcasts. Existing behaviour first tried to replace the aliases with the global that they aliased (rather than the bitcast), causing a crash on an assert because the types didn't match. When this was fixed, it then did the same thing creating the new alias (creating an alias with a different type to its aliasee).

2010-01-09 16:27:31 +00:00

MC

Change errs() to dbgs().

2010-01-05 01:28:22 +00:00

Support

Remove unused string functions.

2010-01-11 20:33:12 +00:00

System

Alternative fix to make sure that the extern declarations used by

2009-12-23 19:12:50 +00:00

Target

Extend r93152 to work on OR r, r. If the source set bits are known not to overlap, then select as an ADD instead.

2010-01-11 22:03:29 +00:00

Transforms

Disable folding sext(trunc(x)) -> x (and other similar cast/cast cases) when the

2010-01-11 22:45:25 +00:00

VMCore

Reimplement getToken and SplitString as "StringRef helper functions"

2010-01-11 18:03:24 +00:00

Makefile

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