Chris Lattner 593c95878b Fix a nasty problem on two-address machines in the following situation: ...

store EAX -> [ss#0]
[ss#0] += 1
...
use(EAX)

In this case, it is not valid to rewrite this as:


store EAX -> [ss#0]
EAX += 1
store EAX -> [ss#0]  ;;; this would also delete the store above
...
use(EAX)

... because EAX is not a dead at that point.  Keep track of which registers
we are allowed to clobber, and which ones we aren't, and don't clobber the
ones we're not supposed to.  :)

This should resolve the issues on X86 last night.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25948 91177308-0d34-0410-b5e6-96231b3b80d8

2006-02-03 23:28:46 +00:00

..

Analysis

Add explicit iostream #includes

2006-01-22 23:19:18 +00:00

Archive

more C++ daintiness

2005-12-26 14:31:26 +00:00

AsmParser

regenerate

2006-01-25 22:27:16 +00:00

Bytecode

Fix auto-upgrade of intrinsics to work properly with both assembly and

2006-01-27 11:49:27 +00:00

CodeGen

Fix a nasty problem on two-address machines in the following situation:

2006-02-03 23:28:46 +00:00

Debugger

dum de dum

2005-12-26 10:24:15 +00:00

ExecutionEngine

Allow the specification of explicit alignments for constant pool entries.

2006-01-31 22:23:14 +00:00

Linker

Rename method

2006-01-24 04:14:29 +00:00

Support

dynamically allocate plugin space as needed

2006-01-26 19:38:58 +00:00

System

Add AddSymbol() method to DynamicLibrary to work around Windows limitation

2006-01-30 04:33:51 +00:00

Target

add a note

2006-02-03 22:06:45 +00:00

Transforms

Improve compatibility with VC2005, patch by Morten Ofstad!

2006-01-26 20:41:32 +00:00

VMCore

validate matching constraints and remember when we see them.

2006-02-02 00:23:53 +00:00

Makefile

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