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Implement opt_and in ujit

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Maxime Chevalier-Boisvert 2021-02-01 11:51:47 -05:00 • committed by Alan Wu
parent 863ff14997
commit 53bd13edf3
1 changed files with 45 additions and 0 deletions
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45
ujit_codegen.c
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@ -588,6 +588,50 @@ gen_opt_lt(jitstate_t* jit, ctx_t* ctx)
return true;
}
static bool
gen_opt_and(jitstate_t* jit, ctx_t* ctx)
{
// Create a size-exit to fall back to the interpreter
// Note: we generate the side-exit before popping operands from the stack
uint8_t* side_exit = ujit_side_exit(jit, ctx);
// TODO: make a helper function for guarding on op-not-redefined
// Make sure that plus isn't redefined for integers
mov(cb, RAX, const_ptr_opnd(ruby_current_vm_ptr));
test(
cb,
member_opnd_idx(RAX, rb_vm_t, redefined_flag, BOP_AND),
imm_opnd(INTEGER_REDEFINED_OP_FLAG)
);
jnz_ptr(cb, side_exit);
// Get the operands and destination from the stack
int arg1_type = ctx_get_top_type(ctx);
x86opnd_t arg1 = ctx_stack_pop(ctx, 1);
int arg0_type = ctx_get_top_type(ctx);
x86opnd_t arg0 = ctx_stack_pop(ctx, 1);
// If not fixnums, fall back
if (arg0_type != T_FIXNUM) {
test(cb, arg0, imm_opnd(RUBY_FIXNUM_FLAG));
jz_ptr(cb, side_exit);
}
if (arg1_type != T_FIXNUM) {
test(cb, arg1, imm_opnd(RUBY_FIXNUM_FLAG));
jz_ptr(cb, side_exit);
}
// Do the bitwise and arg0 & arg1
mov(cb, REG0, arg0);
and(cb, REG0, arg1);
// Push the output on the stack
x86opnd_t dst = ctx_stack_push(ctx, T_FIXNUM);
mov(cb, dst, REG0);
return true;
}
static bool
gen_opt_minus(jitstate_t* jit, ctx_t* ctx)
{
@ -1146,6 +1190,7 @@ ujit_init_codegen(void)
ujit_reg_op(BIN(getinstancevariable), gen_getinstancevariable, false);
ujit_reg_op(BIN(setinstancevariable), gen_setinstancevariable, false);
ujit_reg_op(BIN(opt_lt), gen_opt_lt, false);
ujit_reg_op(BIN(opt_and), gen_opt_and, false);
ujit_reg_op(BIN(opt_minus), gen_opt_minus, false);
ujit_reg_op(BIN(opt_plus), gen_opt_plus, false);
ujit_reg_op(BIN(branchif), gen_branchif, true);