PERF_REG_IP        32 tools/perf/util/perf_regs.h #define DWARF_MINIMAL_REGS ((1ULL << PERF_REG_IP) | (1ULL << PERF_REG_SP))
PERF_REG_IP       223 tools/perf/util/unwind-libdw.c 	err = perf_reg_value(&ip, &data->user_regs, PERF_REG_IP);
PERF_REG_IP        46 tools/perf/util/unwind.h #define LIBUNWIND__ARCH_REG_IP PERF_REG_IP