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

[marxin at gcc dot gnu.org]

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

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |marxin at gcc dot gnu.org

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Hello.

I've been testing fix where I replaced exp2 with scalbln, as Jakub suggested.
On the other hand, -inf looks a bit suspicious and is created here:

ipa-inline.c:946, where

if (growth <= 0) {
  badness = (sreal) (-SREAL_MIN_SIG + growth) << (SREAL_MAX_EXP / 256);

as one can see, it's (-1073741824+growth) << (536870911/256) which is
practically always -inf?

I am curious if it's desired calculation Honza?

Thanks,
Martin