Branch Misprediction Trace #f demo-1 2 34567 0300039268,9 eax FDEMw 0x002: Gne t Not taken FDEM W 0x01l: t: irmovl $3, edx Target FDEM 0x017: irmovl $4, %ecx Target+1 FDEMIW 0x007 irmovl $l, eax Fall Through FDEMWI Cycle 5 M a Incorrectly execute two M Bch=0 instructions at branch target M valA= 0x007 vaE←3 dstE=号edx D vaIC 4 dstE= ecx 5 rB←各eax Processor– 5 – Processor Branch Misprediction Trace 0x000: xorl %eax,%eax 1 2 3 4 5 6 7 8 9 F D E M 0x002: jne t # Not taken F D E M W W 0x011: t: irmovl $3, %edx # Target F D E M W 0x017: irmovl $4, %ecx # Target+1 F D E M W 0x007: irmovl $1, %eax # Fall Through F D E M W # demo-j F D E M W Cycle 5 E valE  3 dstE = %edx E valE  3 dstE = %edx M M_Bch = 0 M_valA = 0x007 D valC = 4 dstE = %ecx D valC = 4 dstE = %ecx F valC  1 rB  %eax F valC  1 rB  %eax ◼ Incorrectly execute two instructions at branch target