Test MP+posw4w0+posw0w0

AArch64 MP+posw4w0+posw0w0
"PosWWw4w0 Rfew0w0 PosRRw0w0 Frew0w4"
Cycle=Rfew0w0 PosRRw0w0 Frew0w4 PosWWw4w0
Relax=
Safe=Rfew0P Frew0P PosRRw0P PosWWw4P
Prefetch=
Com=Rf Fr
Orig=PosWWw4w0 Rfew0w0 PosRRw0w0 Frew0w4
{
uint64_t x; uint64_t 1:X3; uint64_t 1:X2; uint64_t 1:X0;

0:X0=0x1010101; 0:X1=x; 0:X2=0x2020202;
1:X1=x;
}
 P0             | P1          ;
 STR W0,[X1,#4] | LDR W0,[X1] ;
 STR W2,[X1]    | LDR W2,[X1] ;
                | LDR X3,[X1] ;
Observed
    x=0x101010102020202; 1:X3=0x101010102020202; 1:X2=0x0; 1:X0=0x2020202;