[Bug target/79004] ICE in gcc.dg/torture/fp-int-convert-float128-ieee.c with -mcpu=power9

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79004

--- Comment #5 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 40484
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40484&action=edit
Proposed patch to fix the problem

It was decided to split PR target/79004 into 2 parts.  This patch fixes the
problem by disabling the optimization of loading char/short variables from
memory and converting them to IEEE 128-bit floating point in the vector
registers.  This patch will have the effect that the value is first loaded into
a GPR, sign/zero extended, and then moved over to an Altivec register to do the
conversion.

PR target/79038 is an enhancement request to rework the integer<->IEEE 128-bit
floating conversions to match the current float/double conversions with regard
to small integers.