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List:       gcc-bugs
Subject:    [Bug target/83926] ICE during RTL pass: ira, in elimination_costs_in_insn, at reload1.c:3633
From:       "bergner at gcc dot gnu.org" <gcc-bugzilla () gcc ! gnu ! org>
Date:       2018-01-31 19:51:12
Message-ID: bug-83926-4-yHJkdP4fC0 () http ! gcc ! gnu ! org/bugzilla/
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83926

--- Comment #9 from Peter Bergner <bergner at gcc dot gnu.org> ---
So the problem is that the splitter for vsx_div_v2di unconditionally calls
gen_divdi3() , which assumes we have a 64-bit integer HW div insn.  If you do a
scalar 64-bit div, we notice we don't have that HW insn and expand calls the
__divdi3 library function.  Maybe in gen_divdi3() we could detect whether we
need to do that same?  I'll see if I can come up with something.=
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