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Pro5 C++による冗長な生成 code
Subject: BUG -- Pro5 C++ generates redundant slow PPC code
 
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METROWERKS PRODUCT AND USAGE SECTION
 
Product name :            [ CodeWarrior Professional for Mac ]
Product version :         [ Pro 5 ]
Component name :          [ C++ code generator ]
Generating:               [ Mac OS PowerPC ]
Purpose:                  [ application ]
 
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BUG DESCRIPTION SECTION
 
Reason for this report:   [ generates slow code ]
Bug severity:             [ generates slow code ]
Reproducibility:          [ always ]
Problem summary:
 
CW Pro5 C++ compiler generates redundant slow PPC code in comparison
to Pro4. Here is an example. I marked Pro5's redundant instructions
with <<<<<<.
 
I encountered about 5% slowdown in this rather simple code.
 
I used the following optimizer options. I couldn't improve Pro5's code
generation with any optimizer options, though.
 
    以降 assemble listが続くが省略
 
    Pro5 C++の code generatorはまだかなり怪しい様です。
    私は PowerPlantだけ Pro5付属の 2.0に入れ替えて、後は Pro4のままで
    使っています。
    次かその次の patchが出るまで Pro5の C++ compilerは使わないつもりです。

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