Multiply by 2**n with multiplication

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Article #51213

#51213

From: Jose Alves (MH)
Date: Wed, 16 Jun 1993 13:20

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Hi,

How can I make gcc to generate multiplications by integer
powers of 2, instead of converting them to shifts ?
I'v modified the RTX_COSTS macro, to give a higher cost
to shifts than to multiplications, but it does not work.

Is there any place where I can look at the main differences 
between gcc 2.3.3 and 2.4.x ? Are the config files the same ?

(I'm using gcc-2.3.3, on a sparc station 2)


Thanks in advance

Jose'

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From: jose@microelectronic.e-technik.th-darmstadt.de (Jose Alves (MH))
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Subject: Multiply by 2**n with multiplication
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