AArch64 MP+dmb.syw4w0+dataw0w0-rfiw0q0+RFI01 { uint64_t y; uint64_t x; uint64_t 1:X5; uint64_t 1:X0; 0:X0=0x2020202; 0:X1=x; 0:X2=0x1010101; 0:X3=y; 1:X1=y; 1:X2=0x1010101; 1:X4=x; 1:X9=0x3030303; } P0 | P1 ; | STR W9,[X4,#4] ; STR W0,[X1,#4] | LDR W0,[X1] ; DMB SY | EOR X3,X0,X0 ; STR W2,[X3] | ADD W3,W3,W2 ; | STR W3,[X4] ; | LDR X5,[X4] ; Observed x=0x202020201010101; 1:X5=0x303030301010101; 1:X0=0x1010101;