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Implement getspecial

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John Hawthorn 2021-09-08 18:47:09 -07:00 committed by Alan Wu
parent cc2aa1221f
commit 44214e8ad9
2 changed files with 74 additions and 0 deletions
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9
test/ruby/test_yjit.rb
View File

@ -205,6 +205,15 @@ class TestYJIT < Test::Unit::TestCase
RUBY
end
def test_getspecial_backref
assert_compiles("'foo' =~ /(o)./; $&", insns: %i[getspecial], result: "oo")
assert_compiles("'foo' =~ /(o)./; $`", insns: %i[getspecial], result: "f")
assert_compiles("'foo' =~ /(o)./; $'", insns: %i[getspecial], result: "")
assert_compiles("'foo' =~ /(o)./; $+", insns: %i[getspecial], result: "o")
assert_compiles("'foo' =~ /(o)./; $1", insns: %i[getspecial], result: "o")
assert_compiles("'foo' =~ /(o)./; $2", insns: %i[getspecial], result: nil)
end
def test_compile_opt_getinlinecache
assert_compiles(<<~RUBY, insns: %i[opt_getinlinecache], result: 123, min_calls: 2)
def get_foo

65
yjit_codegen.c
View File

@ -3911,6 +3911,70 @@ gen_toregexp(jitstate_t* jit, ctx_t* ctx)
return YJIT_KEEP_COMPILING;
}
static codegen_status_t
gen_getspecial(jitstate_t *jit, ctx_t *ctx)
{
rb_num_t key = jit_get_arg(jit, 0);
rb_num_t type = jit_get_arg(jit, 1);
if (type == 0) {
// not yet implemented
return YJIT_CANT_COMPILE;
} else if (type & 0x01) {
// Can raise if matchdata uninitialized
jit_prepare_routine_call(jit, ctx, REG0);
// call rb_backref_get()
ADD_COMMENT(cb, "rb_backref_get");
call_ptr(cb, REG0, (void *)rb_backref_get);
mov(cb, C_ARG_REGS[0], RAX);
switch (type >> 1) {
case '&':
ADD_COMMENT(cb, "rb_reg_last_match");
call_ptr(cb, REG0, (void *)rb_reg_last_match);
break;
case '`':
ADD_COMMENT(cb, "rb_reg_match_pre");
call_ptr(cb, REG0, (void *)rb_reg_match_pre);
break;
case '\'':
ADD_COMMENT(cb, "rb_reg_match_post");
call_ptr(cb, REG0, (void *)rb_reg_match_post);
break;
case '+':
ADD_COMMENT(cb, "rb_reg_match_last");
call_ptr(cb, REG0, (void *)rb_reg_match_last);
break;
default:
rb_bug("invalid back-ref");
}
x86opnd_t stack_ret = ctx_stack_push(ctx, TYPE_UNKNOWN);
mov(cb, stack_ret, RAX);
return YJIT_KEEP_COMPILING;
} else {
// Can raise if matchdata uninitialized
jit_prepare_routine_call(jit, ctx, REG0);
// call rb_backref_get()
ADD_COMMENT(cb, "rb_backref_get");
call_ptr(cb, REG0, (void *)rb_backref_get);
// rb_reg_nth_match((int)(type >> 1), backref);
ADD_COMMENT(cb, "rb_reg_nth_match");
mov(cb, C_ARG_REGS[0], imm_opnd(type >> 1));
mov(cb, C_ARG_REGS[1], RAX);
call_ptr(cb, REG0, (void *)rb_reg_nth_match);
x86opnd_t stack_ret = ctx_stack_push(ctx, TYPE_UNKNOWN);
mov(cb, stack_ret, RAX);
return YJIT_KEEP_COMPILING;
}
}
static codegen_status_t
gen_opt_getinlinecache(jitstate_t *jit, ctx_t *ctx)
{
@ -4261,6 +4325,7 @@ yjit_init_codegen(void)
yjit_reg_op(BIN(setglobal), gen_setglobal);
yjit_reg_op(BIN(tostring), gen_tostring);
yjit_reg_op(BIN(toregexp), gen_toregexp);
yjit_reg_op(BIN(getspecial), gen_getspecial);
yjit_method_codegen_table = st_init_numtable();