[Bug target/63965] [5 Regression] ICE: in extract_constrain_insn, at recog.c:2230 on ppc64

[meissner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63965

--- Comment #4 from Michael Meissner <meissner at gcc dot gnu.org> ---
Created attachment 34060
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34060&action=edit
Patch to provide loading 'easy' altivec constants into GPR registers

Some vector constants can be made easily with the vector load and splat
immediate instructions and loaded into the Altivec registers.  If we are
loading into GPR registers, this patch adds an alternative to load up the
values using arithmetic operations.