Unify the way cctest initalizes the VM for each test case.

test/cctest/test-assembler-arm.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 25 matching lines @@
 using namespace v8::internal;
 
 
 // Define these function prototypes to match JSEntryFunction in execution.cc.
 typedef Object* (*F1)(int x, int p1, int p2, int p3, int p4);
 typedef Object* (*F2)(int x, int y, int p2, int p3, int p4);
 typedef Object* (*F3)(void* p0, int p1, int p2, int p3, int p4);
 typedef Object* (*F4)(void* p0, void* p1, int p2, int p3, int p4);
 
 
-static v8::Persistent<v8::Context> env;
-
-
-static void InitializeVM() {
-  if (env.IsEmpty()) {
-    env = v8::Context::New();
-  }
-}
-
-
 #define __ assm.
 
 TEST(0) {
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   Assembler assm(isolate, NULL, 0);
 
   __ add(r0, r0, Operand(r1));
   __ mov(pc, Operand(lr));
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Object* code = isolate->heap()->CreateCode(
       desc,
       Code::ComputeFlags(Code::STUB),
       Handle<Code>())->ToObjectChecked();
   CHECK(code->IsCode());
 #ifdef DEBUG
   Code::cast(code)->Print();
 #endif
   F2 f = FUNCTION_CAST<F2>(Code::cast(code)->entry());
   int res = reinterpret_cast<int>(CALL_GENERATED_CODE(f, 3, 4, 0, 0, 0));
   ::printf("f() = %d\n", res);
   CHECK_EQ(7, res);
 }
 
 
 TEST(1) {
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   Assembler assm(isolate, NULL, 0);
   Label L, C;
 
   __ mov(r1, Operand(r0));
   __ mov(r0, Operand::Zero());
   __ b(&C);
 
@@ skipping 17 matching lines @@
   Code::cast(code)->Print();
 #endif
   F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());
   int res = reinterpret_cast<int>(CALL_GENERATED_CODE(f, 100, 0, 0, 0, 0));
   ::printf("f() = %d\n", res);
   CHECK_EQ(5050, res);
 }
 
 
 TEST(2) {
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   Assembler assm(isolate, NULL, 0);
   Label L, C;
 
   __ mov(r1, Operand(r0));
   __ mov(r0, Operand(1));
   __ b(&C);
 
@@ skipping 26 matching lines @@
   Code::cast(code)->Print();
 #endif
   F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());
   int res = reinterpret_cast<int>(CALL_GENERATED_CODE(f, 10, 0, 0, 0, 0));
   ::printf("f() = %d\n", res);
   CHECK_EQ(3628800, res);
 }
 
 
 TEST(3) {
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   typedef struct {
     int i;
     char c;
     int16_t s;
   } T;
   T t;
 
@@ skipping 35 matching lines @@
   ::printf("f() = %d\n", res);
   CHECK_EQ(101010, res);
   CHECK_EQ(100000/2, t.i);
   CHECK_EQ(10*4, t.c);
   CHECK_EQ(1000/8, t.s);
 }
 
 
 TEST(4) {
   // Test the VFP floating point instructions.
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   typedef struct {
     double a;
     double b;
     double c;
     double d;
     double e;
     double f;
@@ skipping 118 matching lines @@
     CHECK_EQ(1.000000059604644775390625, t.d);
     CHECK_EQ(4.25, t.c);
     CHECK_EQ(-4.1875, t.b);
     CHECK_EQ(1.5, t.a);
   }
 }
 
 
 TEST(5) {
   // Test the ARMv7 bitfield instructions.
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   Assembler assm(isolate, NULL, 0);
 
   if (CpuFeatures::IsSupported(ARMv7)) {
     CpuFeatureScope scope(&assm, ARMv7);
     // On entry, r0 = 0xAAAAAAAA = 0b10..10101010.
     __ ubfx(r0, r0, 1, 12);  // 0b00..010101010101 = 0x555
     __ sbfx(r0, r0, 0, 5);   // 0b11..111111110101 = -11
@@ skipping 16 matching lines @@
     int res = reinterpret_cast<int>(
                 CALL_GENERATED_CODE(f, 0xAAAAAAAA, 0, 0, 0, 0));
     ::printf("f() = %d\n", res);
     CHECK_EQ(-7, res);
   }
 }
 
 
 TEST(6) {
   // Test saturating instructions.
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   Assembler assm(isolate, NULL, 0);
 
   if (CpuFeatures::IsSupported(ARMv7)) {
     CpuFeatureScope scope(&assm, ARMv7);
     __ usat(r1, 8, Operand(r0));           // Sat 0xFFFF to 0-255 = 0xFF.
     __ usat(r2, 12, Operand(r0, ASR, 9));  // Sat (0xFFFF>>9) to 0-4095 = 0x7F.
     __ usat(r3, 1, Operand(r0, LSL, 16));  // Sat (0xFFFF<<16) to 0-1 = 0x0.
@@ skipping 23 matching lines @@
 enum VCVTTypes {
   s32_f64,
   u32_f64
 };
 
 static void TestRoundingMode(VCVTTypes types,
                              VFPRoundingMode mode,
                              double value,
                              int expected,
                              bool expected_exception = false) {
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   Assembler assm(isolate, NULL, 0);
 
   if (CpuFeatures::IsSupported(VFP3)) {
     CpuFeatureScope scope(&assm, VFP3);
 
     Label wrong_exception;
 
@@ skipping 157 matching lines @@
   TestRoundingMode(u32_f64, RN, (kMaxInt + 0.49), kMaxInt);
   TestRoundingMode(u32_f64, RN, (kMaxInt + 0.5),
                                 static_cast<uint32_t>(kMaxInt) + 1);
   TestRoundingMode(u32_f64, RN, (kMaxUInt + 0.49), kMaxUInt);
   TestRoundingMode(u32_f64, RN, (kMaxUInt + 0.5), kMaxUInt, true);
   TestRoundingMode(u32_f64, RN, (kMaxUInt + 1.0), kMaxUInt, true);
 }
 
 TEST(8) {
   // Test VFP multi load/store with ia_w.
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   typedef struct {
     double a;
     double b;
     double c;
     double d;
     double e;
     double f;
@@ skipping 87 matching lines @@
   CHECK_EQ(2.0, f.d);
   CHECK_EQ(3.0, f.e);
   CHECK_EQ(4.0, f.f);
   CHECK_EQ(5.0, f.g);
   CHECK_EQ(6.0, f.h);
 }
 
 
 TEST(9) {
   // Test VFP multi load/store with ia.
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   typedef struct {
     double a;
     double b;
     double c;
     double d;
     double e;
     double f;
@@ skipping 91 matching lines @@
   CHECK_EQ(2.0, f.d);
   CHECK_EQ(3.0, f.e);
   CHECK_EQ(4.0, f.f);
   CHECK_EQ(5.0, f.g);
   CHECK_EQ(6.0, f.h);
 }
 
 
 TEST(10) {
   // Test VFP multi load/store with db_w.
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   typedef struct {
     double a;
     double b;
     double c;
     double d;
     double e;
     double f;
@@ skipping 87 matching lines @@
   CHECK_EQ(2.0, f.d);
   CHECK_EQ(3.0, f.e);
   CHECK_EQ(4.0, f.f);
   CHECK_EQ(5.0, f.g);
   CHECK_EQ(6.0, f.h);
 }
 
 
 TEST(11) {
   // Test instructions using the carry flag.
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   typedef struct {
     int32_t a;
     int32_t b;
     int32_t c;
     int32_t d;
   } I;
   I i;
@@ skipping 45 matching lines @@
 
   CHECK_EQ(0xabcd0001, i.a);
   CHECK_EQ(static_cast<int32_t>(0xabcd0000) >> 1, i.b);
   CHECK_EQ(0x00000000, i.c);
   CHECK_EQ(0xffffffff, i.d);
 }
 
 
 TEST(12) {
   // Test chaining of label usages within instructions (issue 1644).
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   Assembler assm(isolate, NULL, 0);
   Label target;
   __ b(eq, &target);
   __ b(ne, &target);
   __ bind(&target);
   __ nop();
 }
 
 
 TEST(13) {
   // Test VFP instructions using registers d16-d31.
-  InitializeVM();
+  CcTest::InitializeVM();
   Isolate* isolate = Isolate::Current();
   HandleScope scope(isolate);
 
   if (!CpuFeatures::IsSupported(VFP32DREGS)) {
     return;
   }
 
   typedef struct {
     double a;
     double b;
@@ skipping 96 matching lines @@
     CHECK_EQ(2.75, t.x);
     CHECK_EQ(1.5, t.y);
     CHECK_EQ(17.0, t.z);
     CHECK_EQ(14.7610017472335499, t.i);
     CHECK_EQ(16.0, t.j);
     CHECK_EQ(73.8818412254460241, t.k);
   }
 }
 
 #undef __