On 06/19/2013 07:39 PM, Bernd Schmidt wrote:
This is bug that triggers on m68k. The loop unroller creates a MULT
expression and tries to force it into a register, which causes a libcall
to be generated. Since args are pushed we create a
(use (mem (plus virtual_outgoing_args scratch)))
in CALL_INSN_FUNCTION_USAGE. Since we're past vregs, the
virtual_outgoing_args rtx survives to reload, which blows up.
Fixed by just using stack_pointer_rtx, since we use a scratch anyway
rather than a known offset. I also noticed that we actually add two of
these USEs, so I've fixed that as well.
Ping.
https://gcc.gnu.org/ml/gcc-patches/2013-06/msg01147.html
Bernd
