r14d 144 arch/x86/entry/calling.h xorl %r14d, %r14d /* nospec r14 */ r14d 63 arch/x86/include/asm/inst.h .ifc \r32,%r14d r14d 113 tools/perf/arch/x86/util/perf_regs.c SDT_NAME_REG(r14d, r14),