r8d               136 arch/x86/entry/calling.h 	xorl	%r8d,  %r8d	/* nospec r8  */
r8d                89 arch/x86/include/asm/asm.h #define _ASM_ARG5L	r8d
r8d                45 arch/x86/include/asm/inst.h 	.ifc \r32,%r8d
r8d                95 tools/perf/arch/x86/util/perf_regs.c 	SDT_NAME_REG(r8d,  r8),