[Bug ipa/64503] [5 Regression] gcc.dg/ipa/iinline-4.c:210:1: internal compiler error: Floating point exception

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64503

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
The values at sreal::to_double are highly suspicious (these values are the same
on x86_64 and alpha), following is on x86_64:

125         val *= exp2 (m_exp);
(gdb) p val
$5 = -1073741826
(gdb) p m_exp
$6 = 2097153
(gdb) p/x m_exp
$7 = 0x200001

(gdb) list
120     double
121     sreal::to_double () const
122     {
123       double val = m_sig;
124       if (m_exp)
125         val *= exp2 (m_exp);
126       return val;
127     }

This can be reproduced by simply setting breakpoint on sreal::to_double, the
problem will be exposed the first time this function is called.