test_mathexact.cpp

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#include "precompiled.hpp"
#include "opto/mulnode.hpp"
#include "opto/mathexactnode.hpp"
#include "unittest.hpp"

TEST_VM(opto, mathexact) {
  ASSERT_FALSE(OverflowMulLNode::is_overflow(1, 1));
  ASSERT_FALSE(OverflowMulLNode::is_overflow(1, min_jlong));
  ASSERT_TRUE(OverflowMulLNode::is_overflow(-1, min_jlong));
  ASSERT_FALSE(OverflowMulLNode::is_overflow(-1, max_jlong));
  ASSERT_TRUE(OverflowMulLNode::is_overflow(max_jlong / 2 + 1, 2));
  ASSERT_FALSE(OverflowMulLNode::is_overflow(min_jlong, 0));
  ASSERT_FALSE(OverflowMulLNode::is_overflow(min_jlong + 1, -1));
  ASSERT_TRUE(OverflowMulLNode::is_overflow(min_jlong + 1, 2));
}