* egcs-19981005 on i586-linux-gnu + glibc-2.0.96
@ 1998-10-06 22:02 Horst von Brand
1998-10-06 23:03 ` Zack Weinberg
0 siblings, 1 reply; 2+ messages in thread
From: Horst von Brand @ 1998-10-06 22:02 UTC (permalink / raw)
To: egcs, libc-alpha
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The build of egcs crashes after the third stage, when building libiberty:
test x"yes" != xyes || \
/usr/src/build/build-egcs-19981005/gcc/xgcc -B/usr/src/build/build-egcs-19981005/gcc/ -c -DHAVE_CONFIG_H -O2 -fomit-frame-pointer -march=pentium -I. -I../../../egcs-19981005/libiberty/../include -fpic ../../../egcs-19981005/libiberty/floatformat.c -o pic/floatformat.o
/usr/include/bits/mathinline.h: In function `floatformat_to_double':
/usr/include/bits/mathinline.h:495: `asm' operand requires impossible reload
make[2]: *** [floatformat.o] Error 1
make[2]: Leaving directory `/usr/src/build/build-egcs-19981005/i586-redhat-linux/libiberty'
make[1]: *** [all-target-libiberty] Error 2
make[1]: Leaving directory `/usr/src/build/build-egcs-19981005'
make: *** [bootstrap-lean] Error 2
--
Horst von Brand vonbrand@sleipnir.valparaiso.cl
Casilla 9G, Viña del Mar, Chile +56 32 672616
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: egcs-19981005 on i586-linux-gnu + glibc-2.0.96
1998-10-06 22:02 egcs-19981005 on i586-linux-gnu + glibc-2.0.96 Horst von Brand
@ 1998-10-06 23:03 ` Zack Weinberg
0 siblings, 0 replies; 2+ messages in thread
From: Zack Weinberg @ 1998-10-06 23:03 UTC (permalink / raw)
To: Horst von Brand; +Cc: egcs, libc-alpha
On Tue, 06 Oct 1998 22:32:54 -0500, Horst von Brand wrote:
>The build of egcs crashes after the third stage, when building libiberty:
>
> /usr/src/build/build-egcs-19981005/gcc/xgcc -B/usr/src/build/build-egcs-1998
>1005/gcc/ -c -DHAVE_CONFIG_H -O2 -fomit-frame-pointer -march=pentium -I. -I../
>../../egcs-19981005/libiberty/../include -fpic ../../../egcs-19981005/libiber
>ty/floatformat.c -o pic/floatformat.o
>/usr/include/bits/mathinline.h: In function `floatformat_to_double':
>/usr/include/bits/mathinline.h:495: `asm' operand requires impossible reload
This is an improvement over previous snapshots, which would silently
generate incorrect code from mathinline.h.
The offending function is:
extern inline double ldexp (double x, int y)
{
register long double v;
asm volatile ("fscale" : "=t" (v) : "0" (x), "u" ((long double) y));
return v;
}
I bet it won't have any trouble compiling this snippet by itself, but will
puke when it's inlined. (Take out "extern inline" to try compiling it by
itself.)
libc people: Anyone know why there are volatile qualifiers on the
mathinline.h asms?
zw
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