I found the root cause.
In function rs6000_preferred_reload_class, it specifically check the
case that reload 0 into a VSX register, then the target reload class
is VSX register. VSX instructions can't load a constant into VSX
registers directly, I guess the author wanted to use a SUB or XOR
instr
On Tue, Aug 05, 2014 at 01:32:00PM +0930, Alan Modra wrote:
> On Mon, Aug 04, 2014 at 05:54:04PM -0700, Carrot Wei wrote:
> > Another problem is in the definition of insn pattern "*movdi_internal64".
> >
> > (define_insn "*movdi_internal64"
> > [(set (match_operand:DI 0 "nonimmediate_operand"
>
On Mon, Aug 4, 2014 at 9:02 PM, Alan Modra wrote:
> On Mon, Aug 04, 2014 at 05:54:04PM -0700, Carrot Wei wrote:
>> Another problem is in the definition of insn pattern "*movdi_internal64".
>>
>> (define_insn "*movdi_internal64"
>> [(set (match_operand:DI 0 "nonimmediate_operand"
>> "=Y,r,r,r,r,r
On Mon, Aug 04, 2014 at 05:54:04PM -0700, Carrot Wei wrote:
> Another problem is in the definition of insn pattern "*movdi_internal64".
>
> (define_insn "*movdi_internal64"
> [(set (match_operand:DI 0 "nonimmediate_operand"
> "=Y,r,r,r,r,r,?m,?*d,?*d,r,*h,*h,r,?*wg,r,?*wm")
> (match_oper
Another problem is in the definition of insn pattern "*movdi_internal64".
(define_insn "*movdi_internal64"
[(set (match_operand:DI 0 "nonimmediate_operand"
"=Y,r,r,r,r,r,?m,?*d,?*d,r,*h,*h,r,?*wg,r,?*wm")
(match_operand:DI 1 "input_operand"
"r,Y,r,I,L,nF,d,m,d,*h,r,0,*wg,r,*wm,r"))]
"T
Hi Vlad
When I use ppc64 gcc4.9 to compile an internal application I got an
ICE due to an invalid instruction generated by reload.
Before IRA, I have following insns:
(insn 139 136 581 10 (set (reg:DI 567)
(const_int 0 [0])) ./strings/stringpiece.h:205 discrim 1 520
{*movdi_internal64}
