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Optimize putobject codegen

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Maxime Chevalier-Boisvert 2021-01-25 17:11:10 -05:00 committed by Alan Wu
parent e7909467df
commit c61238a276
1 changed files with 24 additions and 8 deletions
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32
ujit_codegen.c
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@ -265,15 +265,31 @@ gen_putnil(jitstate_t* jit, ctx_t* ctx)
static bool
gen_putobject(jitstate_t* jit, ctx_t* ctx)
{
// Load the argument from the bytecode sequence.
// We need to do this as the argument can change due to GC compaction.
x86opnd_t pc_imm = const_ptr_opnd((void*)jit->pc);
mov(cb, RAX, pc_imm);
mov(cb, RAX, mem_opnd(64, RAX, 8)); // One after the opcode
VALUE arg = jit_get_arg(jit, 0);
// Write argument at SP
x86opnd_t stack_top = ctx_stack_push(ctx, T_NONE);
mov(cb, stack_top, RAX);
if (FIXNUM_P(arg))
{
// Keep track of the fixnum type tag
x86opnd_t stack_top = ctx_stack_push(ctx, T_FIXNUM);
mov(cb, stack_top, imm_opnd((int64_t)arg));
}
else if (arg == Qtrue || arg == Qfalse)
{
x86opnd_t stack_top = ctx_stack_push(ctx, T_NONE);
mov(cb, stack_top, imm_opnd((int64_t)arg));
}
else
{
// Load the argument from the bytecode sequence.
// We need to do this as the argument can change due to GC compaction.
x86opnd_t pc_plus_one = const_ptr_opnd((void*)(jit->pc + 1));
mov(cb, RAX, pc_plus_one);
mov(cb, RAX, mem_opnd(64, RAX, 0));
// Write argument at SP
x86opnd_t stack_top = ctx_stack_push(ctx, T_NONE);
mov(cb, stack_top, RAX);
}
return true;
}