miniruby --zjit -e nil
runs through iseq_to_ssa
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git
2025-04-18 13:49:48 +00:00
3
vm.c
3
vm.c
@ -496,6 +496,9 @@ jit_compile_exception(rb_execution_context_t *ec)
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if (body->jit_exception_calls == rb_yjit_call_threshold) {
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rb_yjit_compile_iseq(iseq, ec, true);
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}
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}
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return body->jit_exception;
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}
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28
zjit.c
28
zjit.c
@ -134,3 +134,31 @@ rb_zjit_compile_iseq(const rb_iseq_t *iseq, rb_execution_context_t *ec, bool jit
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RB_VM_LOCK_LEAVE();
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}
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unsigned int
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rb_iseq_encoded_size(const rb_iseq_t *iseq)
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{
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return iseq->body->iseq_size;
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}
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// Get the opcode given a program counter. Can return trace opcode variants.
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int
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rb_iseq_opcode_at_pc(const rb_iseq_t *iseq, const VALUE *pc)
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{
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// YJIT should only use iseqs after AST to bytecode compilation
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RUBY_ASSERT_ALWAYS(FL_TEST_RAW((VALUE)iseq, ISEQ_TRANSLATED));
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const VALUE at_pc = *pc;
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return rb_vm_insn_addr2opcode((const void *)at_pc);
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}
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// Get the PC for a given index in an iseq
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VALUE *
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rb_iseq_pc_at_idx(const rb_iseq_t *iseq, uint32_t insn_idx)
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{
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RUBY_ASSERT_ALWAYS(IMEMO_TYPE_P(iseq, imemo_iseq));
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RUBY_ASSERT_ALWAYS(insn_idx < iseq->body->iseq_size);
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VALUE *encoded = iseq->body->iseq_encoded;
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VALUE *pc = &encoded[insn_idx];
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return pc;
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}
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@ -158,7 +158,7 @@ fn to_ssa(opcodes: &Vec<RubyOpcode>) -> Function {
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result
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}
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fn iseq_to_ssa(iseq: *const rb_iseq_t) -> Function {
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pub fn iseq_to_ssa(iseq: *const rb_iseq_t) {
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let mut result = Function::new();
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let mut state = FrameState::new();
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let block = result.entry_block;
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@ -206,13 +206,14 @@ fn iseq_to_ssa(iseq: *const rb_iseq_t) -> Function {
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YARVINSN_leave => {
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result.push_insn(block, Insn::Return { val: state.pop() });
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}
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_ => todo!(),
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_ => eprintln!("zjit: unknown opcode {opcode}"),
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}
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// Move to the next instruction to compile
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insn_idx += insn_len(opcode as usize);
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}
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return result;
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dbg!(result);
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return;
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fn get_arg(pc: *const VALUE, arg_idx: isize) -> VALUE {
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unsafe { *(pc.offset(arg_idx + 1)) }
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@ -25,7 +25,7 @@ pub extern "C" fn rb_zjit_parse_option() -> bool {
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}
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#[no_mangle]
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pub extern "C" fn rb_zjit_iseq_gen_entry_point(_iseq: IseqPtr, _ec: EcPtr) -> *const u8 {
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println!("compiling zjit");
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pub extern "C" fn rb_zjit_iseq_gen_entry_point(iseq: IseqPtr, _ec: EcPtr) -> *const u8 {
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ir::iseq_to_ssa(iseq);
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std::ptr::null()
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}
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