Esempio n. 1
0
  static void fixnum_or(JITOperations& ops, Inliner& i) {
    Value* lint = ops.cast_int(i.recv());
    Value* rint = ops.cast_int(i.arg(0));

    Value* anded = BinaryOperator::CreateAnd(lint, rint, "fixnums_anded",
                                             ops.current_block());

    Value* fix_mask = ConstantInt::get(ops.NativeIntTy, TAG_FIXNUM_MASK);
    Value* fix_tag  = ConstantInt::get(ops.NativeIntTy, TAG_FIXNUM);

    Value* masked = BinaryOperator::CreateAnd(anded, fix_mask, "masked",
                                              ops.current_block());

    Value* cmp = ops.create_equal(masked, fix_tag, "is_fixnum");

    BasicBlock* push = ops.new_block("push_bit_or");
    BasicBlock* send = i.failure();

    ops.create_conditional_branch(push, send, cmp);

    ops.set_block(push);

    Value* ored = BinaryOperator::CreateOr(lint, rint, "fixnums_ored",
                                           ops.current_block());


    i.exception_safe();
    i.set_result(ops.as_obj(ored));
  }
Esempio n. 2
0
  static void fixnum_compare(MathOperation op, JITOperations& ops, Inliner& i) {
    Value* lint = ops.cast_int(i.recv());
    Value* rint = ops.cast_int(i.arg(0));

    Value* anded = BinaryOperator::CreateAnd(lint, rint, "fixnums_anded",
                                             ops.current_block());

    Value* fix_mask = ConstantInt::get(ops.NativeIntTy, TAG_FIXNUM_MASK);
    Value* fix_tag  = ConstantInt::get(ops.NativeIntTy, TAG_FIXNUM);

    Value* masked = BinaryOperator::CreateAnd(anded, fix_mask, "masked",
                                              ops.current_block());

    Value* cmp = ops.create_equal(masked, fix_tag, "is_fixnum");

    BasicBlock* push = ops.new_block("push_le");
    BasicBlock* send = i.failure();

    ops.create_conditional_branch(push, send, cmp);

    ops.set_block(push);

    Value* performed = 0;

    switch(op) {
    case cEqual:
      performed = ops.b().CreateICmpEQ(lint, rint, "fixnum.eq");
      break;
    case cLessThan:
      performed = ops.b().CreateICmpSLT(lint, rint, "fixnum.lt");
      break;
    case cLessThanEqual:
      performed = ops.b().CreateICmpSLE(lint, rint, "fixnum.le");
      break;
    case cGreaterThan:
      performed = ops.b().CreateICmpSGT(lint, rint, "fixnum.gt");
      break;
    case cGreaterThanEqual:
      performed = ops.b().CreateICmpSGE(lint, rint, "fixnum.ge");
      break;
    default:
      abort();
    }

    Value* le = ops.b().CreateSelect(
                   performed,
                   ops.constant(Qtrue),
                   ops.constant(Qfalse));

    i.use_send_for_failure();
    i.exception_safe();
    i.set_result(ops.as_obj(le));
  }
Esempio n. 3
0
  static void fixnum_neg(JITOperations& ops, Inliner& i) {
    BasicBlock* use_send = i.failure();
    BasicBlock* inlined = ops.new_block("fixnum_neg");

    Value* self = i.recv();
    Value* cmp = ops.check_if_fixnum(self);
    ops.create_conditional_branch(inlined, use_send, cmp);

    ops.set_block(inlined);
    Value* native = ops.fixnum_strip(self);
    Value* neg = BinaryOperator::CreateSub(
        ops.Zero, native, "to_neg",
        ops.current_block());

    Value* more = BinaryOperator::CreateShl(neg, ops.One, "shl", ops.current_block());
    Value* tagged = BinaryOperator::CreateOr(more, ops.One, "or", ops.current_block());

    i.exception_safe();
    i.set_result(ops.as_obj(tagged));
  }