update_insn_state(9)

✨ NAME ✨

okay so bestie, this is update_insn_state — straight out of the Kernel API Manual — and it's literally the function that updates the type state for an instruction 💅✨

🦋 SYNOPSIS 🦋

void update_insn_state (struct type_state *state , struct data_loc_info
       *dloc , Dwarf_Die *cu_die , struct disasm_line *dl );

🎀 ARGUMENTS 🎀

• state — the type state table 👑
• dloc — data location info 📍
• cu_die — compile unit debug entry 🧚
• dl — disasm line for the instruction 🫶

💖 DESCRIPTION 💖

So like, this function updates the state table for the target operand of the instruction at dl — but only if it transfers the type, like MOV on x86 ✨

Since it tracks the type, it won't care about the values like in arithmetic instructions like ADD/SUB/MUL/DIV and INC/DEC. periodt. 💅

🚨 real talk: ops->reg2 is only available when both mem_ref and multi_regs are true. no cap. 🫶

🌈 SEE ALSO 🌈

• Kernel file ./tools/perf/util/annotate-data.c update_var_state(9), find_data_type(9), annotated_data_type__update_samples(9) 🔥

mwah 💋 — brought to you by source/version ./tools/perf/util, dated October 2026, for update_insn_state(9). bye bestie, go slay those instruction states 💖🎀🦋