MIPS: Use PC realitive instructions on r6.

test/cctest/test-assembler-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5006 matching lines @@
     };
 
     size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseJialc);
     for (size_t i = 0; i < nr_test_cases; ++i) {
       uint32_t res = run_jialc(tc[i].offset);
       CHECK_EQ(tc[i].expected_res, res);
     }
   }
 }
 
-
-uint64_t run_addiupc(int32_t imm19) {
+static uint32_t run_addiupc(int32_t imm19) {
   Isolate* isolate = CcTest::i_isolate();
   HandleScope scope(isolate);
 
   MacroAssembler assm(isolate, NULL, 0, v8::internal::CodeObjectRequired::kYes);
 
   __ addiupc(v0, imm19);
   __ jr(ra);
   __ nop();
 
   CodeDesc desc;
@@ skipping 12 matching lines @@
 
 
 TEST(r6_addiupc) {
   if (IsMipsArchVariant(kMips32r6)) {
     CcTest::InitializeVM();
 
     struct TestCaseAddiupc {
       int32_t   imm19;
     };
 
-    struct TestCaseAddiupc tc[] = {
-      //  imm19
-      { -262144 },   // 0x40000
-      {      -1 },   // 0x7FFFF
-      {       0 },
-      {       1 },   // 0x00001
-      {  262143 }    // 0x3FFFF
+    TestCaseAddiupc tc[] = {
+        //  imm19
+        {-262144},  // 0x40000
+        {-1},       // 0x7FFFF
+        {0},
+        {1},      // 0x00001
+        {262143}  // 0x3FFFF
     };
 
     size_t nr_test_cases = sizeof(tc) / sizeof(TestCaseAddiupc);
     for (size_t i = 0; i < nr_test_cases; ++i) {
       PC = 0;
       uint32_t res = run_addiupc(tc[i].imm19);
       // Now, the program_counter (PC) is set.
       uint32_t expected_res = PC + (tc[i].imm19 << 2);
       CHECK_EQ(expected_res, res);
     }
@@ skipping 369 matching lines @@
   Handle<Code> code = isolate->factory()->NewCode(
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
   F2 f = FUNCTION_CAST<F2>(code->entry());
 
   int32_t res = reinterpret_cast<int32_t>(
       CALL_GENERATED_CODE(isolate, f, 42, 42, 0, 0, 0));
   CHECK_EQ(res, 0);
 }
 
 #undef __