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YJIT: Check VM_ENV_NAMESPACED_P in gen_block_given

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This commit is contained in:
Takashi Kokubun 2025-08-12 15:04:31 -07:00
parent b06465c4d3
commit d129669b17
1 changed files with 15 additions and 5 deletions
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20
yjit/src/codegen.rs
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@ -6647,6 +6647,7 @@ fn jit_rb_f_block_given_p(
true
}
/// Codegen for `block_given?` and `defined?(yield)`
fn gen_block_given(
jit: &mut JITState,
asm: &mut Assembler,
@ -6656,15 +6657,24 @@ fn gen_block_given(
) {
asm_comment!(asm, "block_given?");
// Same as rb_vm_frame_block_handler
// VM_ENV_FLAGS(ep, VM_FRAME_MAGIC_MASK)
let ep_opnd = gen_get_lep(jit, asm);
let block_handler = asm.load(
Opnd::mem(64, ep_opnd, SIZEOF_VALUE_I32 * VM_ENV_DATA_INDEX_SPECVAL)
);
let flags = Opnd::mem(64, ep_opnd, VM_ENV_DATA_INDEX_FLAGS as i32 * SIZEOF_VALUE_I32);
let frame_type = asm.and(flags, VM_FRAME_MAGIC_MASK.into());
// Return false_opnd if VM_ENV_NAMESPACED_P(ep)
asm.cmp(frame_type, VM_FRAME_MAGIC_CLASS.into());
let block_given = asm.csel_ne(true_opnd, false_opnd);
asm.cmp(frame_type, VM_FRAME_MAGIC_TOP.into());
let block_given = asm.csel_ne(block_given, false_opnd);
// VM_ENV_BLOCK_HANDLER(VM_CF_LEP(cfp))
let ep_opnd = gen_get_lep(jit, asm); // Reload ep_opnd to avoid register spill
let block_handler = Opnd::mem(64, ep_opnd, VM_ENV_DATA_INDEX_SPECVAL * SIZEOF_VALUE_I32);
// Return `block_handler != VM_BLOCK_HANDLER_NONE`
asm.cmp(block_handler, VM_BLOCK_HANDLER_NONE.into());
let block_given = asm.csel_ne(true_opnd, false_opnd);
let block_given = asm.csel_ne(block_given, false_opnd);
asm.mov(out_opnd, block_given);
}