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sparc-rtems4.7-gcc versus fpu

From: "Peter A. Krauss" <peter dot a dot krauss at web dot de>
To: gcc at gcc dot gnu dot org
Cc: joel dot sherrill at oarcorp dot com, peter dot a dot krauss at astrium dot eads dot net
Date: Wed, 13 Jun 2007 13:18:08 +0200
Subject: sparc-rtems4.7-gcc versus fpu

Hello,

I have downloaded sparc-rtems4.7 and would like to use it for a leon2 target with fpu. I am puzzled on how the compiler inserts fpu instructions. My summary is:

- The compiler does insert fpu instructions, if no fpu command line option is given or if "-mhard-quad-float" is used.

- The compiler does not insert fpu instructions, if "-mfpu" or "-mhard-float" is used.

Why?


Peter


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Attachment: sparc_fpu_tests.txt
Description: Text document

Follow-Ups:
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- Re: sparc-rtems4.7-gcc versus fpu
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