fold_truthop patch causes sparcv9 testsuite regressions

[Roger Sayle]

On Fri, 21 Jun 2002, Rainer Orth wrote:

> Roger,
> this patch
>
> 2002-06-01  Roger Sayle  <roger@eyesopen.com>
>
> 	* fold-const.c (fold_truthop): Transform "a || b" into "(a|b) != 0"
> 	and "!p && !q" into "(p|q) == 0" under suitable conditions.
>
> causes the sparc-sun-solaris2.8 -m64 (i.e. sparcv9) testsuite regressions
> described in http://gcc.gnu.org/ml/gcc-bugs/2002-06/msg00602.html

Thanks for bringing this to my attention.  I've managed to get as
far as building the cc1 from a cross-compiler from i686-pc-linux-gnu
to sparc-sun-solaris2.8 and can confirm that 20000511-1.c when
compiled with "-m64" does mysteriously contain the line
".global .rem" with even though that symbol is never used.
Without "-m64" the assembler output also contains ".global .umul"
and ".global .div" which also aren't used.

I'll look into it further, but its difficult to believe that the
patch above was responsible.  But stranger things have happened...

Roger
--
Roger Sayle,                         E-mail: roger@eyesopen.com
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