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Refactorings in ujit. Implement Ruby jump instruction.

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This commit is contained in:
Maxime Chevalier-Boisvert 2021-01-08 15:18:03 -05:00 • committed by Alan Wu
parent 1744c15578
commit 2cc0db12fe
3 changed files with 130 additions and 20 deletions
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66
ujit_codegen.c
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@ -972,7 +972,70 @@ gen_branchunless(jitstate_t* jit, ctx_t* ctx)
blockid_t jump_block = { jit->iseq, jump_idx };
// Generate the branch instructions
gen_branch(ctx, jump_block, next_block, gen_branchunless_branch);
gen_branch(
ctx,
jump_block,
ctx,
next_block,
ctx,
gen_branchunless_branch
);
return true;
}
void
gen_jump_branch(codeblock_t* cb, uint8_t* target0, uint8_t* target1, uint8_t shape)
{
switch (shape)
{
case SHAPE_NEXT0:
break;
case SHAPE_NEXT1:
assert (false);
break;
case SHAPE_DEFAULT:
jmp_ptr(cb, target0);
break;
}
}
static bool
gen_jump(jitstate_t* jit, ctx_t* ctx)
{
// Get the branch target instruction offsets
uint32_t next_idx = jit_next_idx(jit);
uint32_t jump_idx = next_idx + (uint32_t)jit_get_arg(jit, 0);
blockid_t jump_block = { jit->iseq, jump_idx };
//
// TODO:
// RUBY_VM_CHECK_INTS(ec);
//
//print_str(cb, "jump!");
//print_int(cb, imm_opnd(jump_idx));
// If the jump target was already compiled
if (find_block_version(jump_block, ctx))
{
// Generate the jump instruction
gen_branch(
ctx,
jump_block,
ctx,
BLOCKID_NULL,
ctx,
gen_jump_branch
);
}
else
{
// No need for a jump, compile the target block right here
gen_block_version(jump_block, ctx);
}
return true;
}
@ -1024,4 +1087,5 @@ ujit_init_codegen(void)
ujit_reg_op(BIN(opt_plus), gen_opt_plus, false);
//ujit_reg_op(BIN(opt_send_without_block), gen_opt_send_without_block);
ujit_reg_op(BIN(branchunless), gen_branchunless, true);
ujit_reg_op(BIN(jump), gen_jump, true);
}