Reapply CL "Option to truncate integers to 64 bits, part 2"

runtime/vm/object_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "platform/globals.h"
 
 #include "vm/assembler.h"
 #include "vm/class_finalizer.h"
 #include "vm/code_descriptors.h"
 #include "vm/dart_api_impl.h"
@@ skipping 319 matching lines @@
 
   Mint& mint1 = Mint::Handle();
   mint1 ^= Integer::New(DART_2PART_UINT64_C(0x7FFFFFFF, 100));
   Mint& mint2 = Mint::Handle();
   mint2 ^= Integer::New(-DART_2PART_UINT64_C(0x7FFFFFFF, 100));
   EXPECT_EQ(-1, a.CompareWith(mint1));
   EXPECT_EQ(1, a.CompareWith(mint2));
   EXPECT_EQ(-1, c.CompareWith(mint1));
   EXPECT_EQ(1, c.CompareWith(mint2));
 
-  Bigint& big1 = Bigint::Handle(Bigint::NewFromCString("10000000000000000000"));
-  Bigint& big2 =
-      Bigint::Handle(Bigint::NewFromCString("-10000000000000000000"));
-  EXPECT_EQ(-1, a.CompareWith(big1));
-  EXPECT_EQ(1, a.CompareWith(big2));
-  EXPECT_EQ(-1, c.CompareWith(big1));
-  EXPECT_EQ(1, c.CompareWith(big2));
+  if (!Bigint::IsDisabled()) {
+    Bigint& big1 =
+        Bigint::Handle(Bigint::NewFromCString("10000000000000000000"));
+    Bigint& big2 =
+        Bigint::Handle(Bigint::NewFromCString("-10000000000000000000"));
+    EXPECT_EQ(-1, a.CompareWith(big1));
+    EXPECT_EQ(1, a.CompareWith(big2));
+    EXPECT_EQ(-1, c.CompareWith(big1));
+    EXPECT_EQ(1, c.CompareWith(big2));
+  }
 }
 
 ISOLATE_UNIT_TEST_CASE(StringCompareTo) {
   const String& abcd = String::Handle(String::New("abcd"));
   const String& abce = String::Handle(String::New("abce"));
   EXPECT_EQ(0, abcd.CompareTo(abcd));
   EXPECT_EQ(0, abce.CompareTo(abce));
   EXPECT(abcd.CompareTo(abce) < 0);
   EXPECT(abce.CompareTo(abcd) > 0);
 
@@ skipping 128 matching lines @@
 
   Mint& c = Mint::Handle();
   c ^= Integer::New(-DART_2PART_UINT64_C(3, 0));
   Smi& smi1 = Smi::Handle(Smi::New(4));
   Smi& smi2 = Smi::Handle(Smi::New(-4));
   EXPECT_EQ(1, a.CompareWith(smi1));
   EXPECT_EQ(1, a.CompareWith(smi2));
   EXPECT_EQ(-1, c.CompareWith(smi1));
   EXPECT_EQ(-1, c.CompareWith(smi2));
 
-  Bigint& big1 = Bigint::Handle(Bigint::NewFromCString("10000000000000000000"));
-  Bigint& big2 =
-      Bigint::Handle(Bigint::NewFromCString("-10000000000000000000"));
-  EXPECT_EQ(-1, a.CompareWith(big1));
-  EXPECT_EQ(1, a.CompareWith(big2));
-  EXPECT_EQ(-1, c.CompareWith(big1));
-  EXPECT_EQ(1, c.CompareWith(big2));
+  if (!Bigint::IsDisabled()) {
+    Bigint& big1 =
+        Bigint::Handle(Bigint::NewFromCString("10000000000000000000"));
+    Bigint& big2 =
+        Bigint::Handle(Bigint::NewFromCString("-10000000000000000000"));
+    EXPECT_EQ(-1, a.CompareWith(big1));
+    EXPECT_EQ(1, a.CompareWith(big2));
+    EXPECT_EQ(-1, c.CompareWith(big1));
+    EXPECT_EQ(1, c.CompareWith(big2));
+  }
 
   int64_t mint_value = DART_2PART_UINT64_C(0x7FFFFFFF, 64);
   const String& mint_string = String::Handle(String::New("0x7FFFFFFF00000064"));
   Mint& mint1 = Mint::Handle();
   mint1 ^= Integer::NewCanonical(mint_string);
   Mint& mint2 = Mint::Handle();
   mint2 ^= Integer::NewCanonical(mint_string);
   EXPECT_EQ(mint1.value(), mint_value);
   EXPECT_EQ(mint2.value(), mint_value);
   EXPECT_EQ(mint1.raw(), mint2.raw());
@@ skipping 77 matching lines @@
     EXPECT_EQ(2.0, dbl1.value());
 
     // Disallow legacy form.
     const String& dbl_str2 = String::Handle(String::New("2.0d"));
     const Double& dbl2 = Double::Handle(Double::New(dbl_str2));
     EXPECT(dbl2.IsNull());
   }
 }
 
 ISOLATE_UNIT_TEST_CASE(Bigint) {
+  if (Bigint::IsDisabled()) {
+    return;
+  }
+
   Bigint& b = Bigint::Handle();
   EXPECT(b.IsNull());
   const char* cstr = "18446744073709551615000";
   const String& test = String::Handle(String::New(cstr));
   b ^= Integer::NewCanonical(test);
   const char* str = b.ToCString();
   EXPECT_STREQ(cstr, str);
 
   int64_t t64 = DART_2PART_UINT64_C(1, 0);
   Bigint& big = Bigint::Handle(Bigint::NewFromInt64(t64));
@@ skipping 27 matching lines @@
 ISOLATE_UNIT_TEST_CASE(Integer) {
   Integer& i = Integer::Handle();
   i = Integer::NewCanonical(String::Handle(String::New("12")));
   EXPECT(i.IsSmi());
   i = Integer::NewCanonical(String::Handle(String::New("-120")));
   EXPECT(i.IsSmi());
   i = Integer::NewCanonical(String::Handle(String::New("0")));
   EXPECT(i.IsSmi());
   i = Integer::NewCanonical(
       String::Handle(String::New("12345678901234567890")));
-  EXPECT(i.IsBigint());
+  EXPECT(FLAG_limit_ints_to_64_bits ? i.IsNull() : i.IsBigint());
   i = Integer::NewCanonical(
       String::Handle(String::New("-12345678901234567890111222")));
-  EXPECT(i.IsBigint());
+  EXPECT(FLAG_limit_ints_to_64_bits ? i.IsNull() : i.IsBigint());
 }
 
 ISOLATE_UNIT_TEST_CASE(String) {
   const char* kHello = "Hello World!";
   int32_t hello_len = strlen(kHello);
   const String& str = String::Handle(String::New(kHello));
   EXPECT(str.IsInstance());
   EXPECT(str.IsString());
   EXPECT(str.IsOneByteString());
   EXPECT(!str.IsTwoByteString());
@@ skipping 3497 matching lines @@
     EXPECT_STREQ(
         "{\"type\":\"@Instance\","
         "\"_vmType\":\"Mint\","
         "\"class\":{\"type\":\"@Class\",\"fixedId\":true,\"id\":\"\","
         "\"name\":\"_Mint\",\"_vmName\":\"\"},"
         "\"kind\":\"Int\","
         "\"id\":\"\",\"valueAsString\":\"-9223372036854775808\"}",
         buffer);
   }
   // Bigint reference
-  {
+  if (!Bigint::IsDisabled()) {
     JSONStream js;
     const String& bigint_str =
         String::Handle(String::New("44444444444444444444444444444444"));
     const Integer& bigint = Integer::Handle(Integer::New(bigint_str));
     bigint.PrintJSON(&js, true);
     ElideJSONSubstring("classes", js.ToCString(), buffer);
     ElideJSONSubstring("objects", buffer, buffer);
     ElideJSONSubstring("_Bigint@", buffer, buffer);
     EXPECT_STREQ(
         "{\"type\":\"@Instance\","
@@ skipping 454 matching lines @@
   // utf32->utf16 conversion.
   int32_t char_codes[] = {0,      0x0a,   0x0d,   0x7f,   0xff,
                           0xffff, 0xd800, 0xdc00, 0xdbff, 0xdfff};
 
   const String& str =
       String::Handle(String::FromUTF32(char_codes, ARRAY_SIZE(char_codes)));
   EXPECT(str.Equals(char_codes, ARRAY_SIZE(char_codes)));
 }
 
 }  // namespace dart