Upgrade V8 to 3.4.8

1 files changed, 1053 insertions, 44 deletions

diff --git a/deps/v8/test/cctest/test-assembler-mips.cc b/deps/v8/test/cctest/test-assembler-mips.cc
index ecb42e2f7b..8ac89f6b30 100644
--- a/deps/v8/test/cctest/test-assembler-mips.cc
+++ b/deps/v8/test/cctest/test-assembler-mips.cc
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 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:
@@ -59,11 +59,12 @@ static void InitializeVM() {
 
 #define __ assm.
 
+
 TEST(MIPS0) {
   InitializeVM();
   v8::HandleScope scope;
 
-  MacroAssembler assm(NULL, 0);
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
 
   // Addition.
   __ addu(v0, a0, a1);
@@ -72,14 +73,11 @@ TEST(MIPS0) {
 
   CodeDesc desc;
   assm.GetCode(&desc);
-  Object* code = Heap::CreateCode(desc,
-                                  NULL,
-                                  Code::ComputeFlags(Code::STUB),
-                                  Handle<Object>(Heap::undefined_value()));
+  Object* code = HEAP->CreateCode(
+      desc,
+      Code::ComputeFlags(Code::STUB),
+      Handle<Object>(HEAP->undefined_value()))->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, 0xab0, 0xc, 0, 0, 0));
   ::printf("f() = %d\n", res);
@@ -91,7 +89,7 @@ TEST(MIPS1) {
   InitializeVM();
   v8::HandleScope scope;
 
-  MacroAssembler assm(NULL, 0);
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
   Label L, C;
 
   __ mov(a1, a0);
@@ -100,12 +98,12 @@ TEST(MIPS1) {
   __ nop();
 
   __ bind(&L);
-  __ add(v0, v0, a1);
+  __ addu(v0, v0, a1);
   __ addiu(a1, a1, -1);
 
   __ bind(&C);
   __ xori(v1, a1, 0);
-  __ Branch(ne, &L, v1, Operand(0, RelocInfo::NONE));
+  __ Branch(&L, ne, v1, Operand(0));
   __ nop();
 
   __ jr(ra);
@@ -113,14 +111,11 @@ TEST(MIPS1) {
 
   CodeDesc desc;
   assm.GetCode(&desc);
-  Object* code = Heap::CreateCode(desc,
-                                  NULL,
-                                  Code::ComputeFlags(Code::STUB),
-                                  Handle<Object>(Heap::undefined_value()));
+  Object* code = HEAP->CreateCode(
+      desc,
+      Code::ComputeFlags(Code::STUB),
+      Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
   CHECK(code->IsCode());
-#ifdef DEBUG
-  Code::cast(code)->Print();
-#endif
   F1 f = FUNCTION_CAST<F1>(Code::cast(code)->entry());
   int res = reinterpret_cast<int>(CALL_GENERATED_CODE(f, 50, 0, 0, 0, 0));
   ::printf("f() = %d\n", res);
@@ -132,7 +127,7 @@ TEST(MIPS2) {
   InitializeVM();
   v8::HandleScope scope;
 
-  MacroAssembler assm(NULL, 0);
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
 
   Label exit, error;
 
@@ -166,62 +161,81 @@ TEST(MIPS2) {
   __ srav(v0, v0, t0);  // 0xff234560
   __ sllv(v0, v0, t0);  // 0xf2345600
   __ srlv(v0, v0, t0);  // 0x0f234560
-  __ Branch(ne, &error, v0, Operand(0x0f234560));
+  __ Branch(&error, ne, v0, Operand(0x0f234560));
   __ nop();
 
-  __ add(v0, t0, t1);   // 0x00001238
-  __ sub(v0, v0, t0);   // 0x00001234
-  __ Branch(ne, &error, v0, Operand(0x00001234));
+  __ addu(v0, t0, t1);   // 0x00001238
+  __ subu(v0, v0, t0);  // 0x00001234
+  __ Branch(&error, ne, v0, Operand(0x00001234));
   __ nop();
   __ addu(v1, t3, t0);
-  __ Branch(ne, &error, v1, Operand(0x80000003));
+  __ Branch(&error, ne, v1, Operand(0x80000003));
   __ nop();
   __ subu(v1, t7, t0);  // 0x7ffffffc
-  __ Branch(ne, &error, v1, Operand(0x7ffffffc));
+  __ Branch(&error, ne, v1, Operand(0x7ffffffc));
   __ nop();
 
   __ and_(v0, t1, t2);  // 0x00001230
   __ or_(v0, v0, t1);   // 0x00001234
   __ xor_(v0, v0, t2);  // 0x1234444c
   __ nor(v0, v0, t2);   // 0xedcba987
-  __ Branch(ne, &error, v0, Operand(0xedcba983));
+  __ Branch(&error, ne, v0, Operand(0xedcba983));
   __ nop();
 
   __ slt(v0, t7, t3);
-  __ Branch(ne, &error, v0, Operand(0x1));
+  __ Branch(&error, ne, v0, Operand(0x1));
   __ nop();
   __ sltu(v0, t7, t3);
-  __ Branch(ne, &error, v0, Operand(0x0));
+  __ Branch(&error, ne, v0, Operand(0x0));
   __ nop();
   // End of SPECIAL class.
 
-  __ addi(v0, zero_reg, 0x7421);  // 0x00007421
-  __ addi(v0, v0, -0x1);  // 0x00007420
+  __ addiu(v0, zero_reg, 0x7421);  // 0x00007421
+  __ addiu(v0, v0, -0x1);  // 0x00007420
   __ addiu(v0, v0, -0x20);  // 0x00007400
-  __ Branch(ne, &error, v0, Operand(0x00007400));
+  __ Branch(&error, ne, v0, Operand(0x00007400));
   __ nop();
   __ addiu(v1, t3, 0x1);  // 0x80000000
-  __ Branch(ne, &error, v1, Operand(0x80000000));
+  __ Branch(&error, ne, v1, Operand(0x80000000));
   __ nop();
 
   __ slti(v0, t1, 0x00002000);  // 0x1
   __ slti(v0, v0, 0xffff8000);  // 0x0
-  __ Branch(ne, &error, v0, Operand(0x0));
+  __ Branch(&error, ne, v0, Operand(0x0));
   __ nop();
   __ sltiu(v0, t1, 0x00002000);  // 0x1
   __ sltiu(v0, v0, 0x00008000);  // 0x1
-  __ Branch(ne, &error, v0, Operand(0x1));
+  __ Branch(&error, ne, v0, Operand(0x1));
   __ nop();
 
   __ andi(v0, t1, 0xf0f0);  // 0x00001030
   __ ori(v0, v0, 0x8a00);  // 0x00009a30
   __ xori(v0, v0, 0x83cc);  // 0x000019fc
-  __ Branch(ne, &error, v0, Operand(0x000019fc));
+  __ Branch(&error, ne, v0, Operand(0x000019fc));
   __ nop();
   __ lui(v1, 0x8123);  // 0x81230000
-  __ Branch(ne, &error, v1, Operand(0x81230000));
+  __ Branch(&error, ne, v1, Operand(0x81230000));
   __ nop();
 
+  // Bit twiddling instructions & conditional moves.
+  // Uses t0-t7 as set above.
+  __ clz(v0, t0);       // 29
+  __ clz(v1, t1);       // 19
+  __ addu(v0, v0, v1);  // 48
+  __ clz(v1, t2);       // 3
+  __ addu(v0, v0, v1);  // 51
+  __ clz(v1, t7);       // 0
+  __ addu(v0, v0, v1);  // 51
+  __ Branch(&error, ne, v0, Operand(51));
+  __ movn(a0, t3, t0);  // Move a0<-t3 (t0 is NOT 0).
+  __ Ins(a0, t1, 12, 8);  // 0x7ff34fff
+  __ Branch(&error, ne, a0, Operand(0x7ff34fff));
+  __ movz(a0, t6, t7);    // a0 not updated (t7 is NOT 0).
+  __ Ext(a1, a0, 8, 12);  // 0x34f
+  __ Branch(&error, ne, a1, Operand(0x34f));
+  __ movz(a0, t6, v1);    // a0<-t6, v0 is 0, from 8 instr back.
+  __ Branch(&error, ne, a0, Operand(t6));
+
   // Everything was correctly executed. Load the expected result.
   __ li(v0, 0x31415926);
   __ b(&exit);
@@ -229,6 +243,7 @@ TEST(MIPS2) {
 
   __ bind(&error);
   // Got an error. Return a wrong result.
+  __ li(v0, 666);
 
   __ bind(&exit);
   __ jr(ra);
@@ -236,18 +251,1012 @@ TEST(MIPS2) {
 
   CodeDesc desc;
   assm.GetCode(&desc);
-  Object* code = Heap::CreateCode(desc,
-                                  NULL,
-                                  Code::ComputeFlags(Code::STUB),
-                                  Handle<Object>(Heap::undefined_value()));
+  Object* code = HEAP->CreateCode(
+      desc,
+      Code::ComputeFlags(Code::STUB),
+      Handle<Object>(HEAP->undefined_value()))->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, 0xab0, 0xc, 0, 0, 0));
   ::printf("f() = %d\n", res);
   CHECK_EQ(0x31415926, res);
 }
 
+
+TEST(MIPS3) {
+  // Test floating point instructions.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    double a;
+    double b;
+    double c;
+    double d;
+    double e;
+    double f;
+    double g;
+  } T;
+  T t;
+
+  // Create a function that accepts &t, and loads, manipulates, and stores
+  // the doubles t.a ... t.f.
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
+  Label L, C;
+
+  if (CpuFeatures::IsSupported(FPU)) {
+    CpuFeatures::Scope scope(FPU);
+
+    __ ldc1(f4, MemOperand(a0, OFFSET_OF(T, a)) );
+    __ ldc1(f6, MemOperand(a0, OFFSET_OF(T, b)) );
+    __ add_d(f8, f4, f6);
+    __ sdc1(f8, MemOperand(a0, OFFSET_OF(T, c)) );  // c = a + b.
+
+    __ mov_d(f10, f8);  // c
+    __ neg_d(f12, f6);  // -b
+    __ sub_d(f10, f10, f12);
+    __ sdc1(f10, MemOperand(a0, OFFSET_OF(T, d)) );  // d = c - (-b).
+
+    __ sdc1(f4, MemOperand(a0, OFFSET_OF(T, b)) );   // b = a.
+
+    __ li(t0, 120);
+    __ mtc1(t0, f14);
+    __ cvt_d_w(f14, f14);   // f14 = 120.0.
+    __ mul_d(f10, f10, f14);
+    __ sdc1(f10, MemOperand(a0, OFFSET_OF(T, e)) );  // e = d * 120 = 1.8066e16.
+
+    __ div_d(f12, f10, f4);
+    __ sdc1(f12, MemOperand(a0, OFFSET_OF(T, f)) );  // f = e / a = 120.44.
+
+    __ sqrt_d(f14, f12);
+    __ sdc1(f14, MemOperand(a0, OFFSET_OF(T, g)) );
+    // g = sqrt(f) = 10.97451593465515908537
+
+    __ jr(ra);
+    __ nop();
+
+    CodeDesc desc;
+    assm.GetCode(&desc);
+    Object* code = HEAP->CreateCode(
+        desc,
+        Code::ComputeFlags(Code::STUB),
+        Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+    CHECK(code->IsCode());
+    F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+    t.a = 1.5e14;
+    t.b = 2.75e11;
+    t.c = 0.0;
+    t.d = 0.0;
+    t.e = 0.0;
+    t.f = 0.0;
+    Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+    USE(dummy);
+    CHECK_EQ(1.5e14, t.a);
+    CHECK_EQ(1.5e14, t.b);
+    CHECK_EQ(1.50275e14, t.c);
+    CHECK_EQ(1.50550e14, t.d);
+    CHECK_EQ(1.8066e16, t.e);
+    CHECK_EQ(120.44, t.f);
+    CHECK_EQ(10.97451593465515908537, t.g);
+  }
+}
+
+
+TEST(MIPS4) {
+  // Test moves between floating point and integer registers.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    double a;
+    double b;
+    double c;
+  } T;
+  T t;
+
+  Assembler assm(Isolate::Current(), NULL, 0);
+  Label L, C;
+
+  if (CpuFeatures::IsSupported(FPU)) {
+    CpuFeatures::Scope scope(FPU);
+
+    __ ldc1(f4, MemOperand(a0, OFFSET_OF(T, a)) );
+    __ ldc1(f6, MemOperand(a0, OFFSET_OF(T, b)) );
+
+    // Swap f4 and f6, by using four integer registers, t0-t3.
+    __ mfc1(t0, f4);
+    __ mfc1(t1, f5);
+    __ mfc1(t2, f6);
+    __ mfc1(t3, f7);
+
+    __ mtc1(t0, f6);
+    __ mtc1(t1, f7);
+    __ mtc1(t2, f4);
+    __ mtc1(t3, f5);
+
+    // Store the swapped f4 and f5 back to memory.
+    __ sdc1(f4, MemOperand(a0, OFFSET_OF(T, a)) );
+    __ sdc1(f6, MemOperand(a0, OFFSET_OF(T, c)) );
+
+    __ jr(ra);
+    __ nop();
+
+    CodeDesc desc;
+    assm.GetCode(&desc);
+    Object* code = HEAP->CreateCode(
+        desc,
+        Code::ComputeFlags(Code::STUB),
+        Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+    CHECK(code->IsCode());
+    F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+    t.a = 1.5e22;
+    t.b = 2.75e11;
+    t.c = 17.17;
+    Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+    USE(dummy);
+
+    CHECK_EQ(2.75e11, t.a);
+    CHECK_EQ(2.75e11, t.b);
+    CHECK_EQ(1.5e22, t.c);
+  }
+}
+
+
+TEST(MIPS5) {
+  // Test conversions between doubles and integers.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    double a;
+    double b;
+    int i;
+    int j;
+  } T;
+  T t;
+
+  Assembler assm(Isolate::Current(), NULL, 0);
+  Label L, C;
+
+  if (CpuFeatures::IsSupported(FPU)) {
+    CpuFeatures::Scope scope(FPU);
+
+    // Load all structure elements to registers.
+    __ ldc1(f4, MemOperand(a0, OFFSET_OF(T, a)) );
+    __ ldc1(f6, MemOperand(a0, OFFSET_OF(T, b)) );
+    __ lw(t0, MemOperand(a0, OFFSET_OF(T, i)) );
+    __ lw(t1, MemOperand(a0, OFFSET_OF(T, j)) );
+
+    // Convert double in f4 to int in element i.
+    __ cvt_w_d(f8, f4);
+    __ mfc1(t2, f8);
+    __ sw(t2, MemOperand(a0, OFFSET_OF(T, i)) );
+
+    // Convert double in f6 to int in element j.
+    __ cvt_w_d(f10, f6);
+    __ mfc1(t3, f10);
+    __ sw(t3, MemOperand(a0, OFFSET_OF(T, j)) );
+
+    // Convert int in original i (t0) to double in a.
+    __ mtc1(t0, f12);
+    __ cvt_d_w(f0, f12);
+    __ sdc1(f0, MemOperand(a0, OFFSET_OF(T, a)) );
+
+    // Convert int in original j (t1) to double in b.
+    __ mtc1(t1, f14);
+    __ cvt_d_w(f2, f14);
+    __ sdc1(f2, MemOperand(a0, OFFSET_OF(T, b)) );
+
+    __ jr(ra);
+    __ nop();
+
+    CodeDesc desc;
+    assm.GetCode(&desc);
+    Object* code = HEAP->CreateCode(
+        desc,
+        Code::ComputeFlags(Code::STUB),
+        Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+    CHECK(code->IsCode());
+    F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+    t.a = 1.5e4;
+    t.b = 2.75e8;
+    t.i = 12345678;
+    t.j = -100000;
+    Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+    USE(dummy);
+
+    CHECK_EQ(12345678.0, t.a);
+    CHECK_EQ(-100000.0, t.b);
+    CHECK_EQ(15000, t.i);
+    CHECK_EQ(275000000, t.j);
+  }
+}
+
+
+TEST(MIPS6) {
+  // Test simple memory loads and stores.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    uint32_t ui;
+    int32_t si;
+    int32_t r1;
+    int32_t r2;
+    int32_t r3;
+    int32_t r4;
+    int32_t r5;
+    int32_t r6;
+  } T;
+  T t;
+
+  Assembler assm(Isolate::Current(), NULL, 0);
+  Label L, C;
+
+  // Basic word load/store.
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, ui)) );
+  __ sw(t0, MemOperand(a0, OFFSET_OF(T, r1)) );
+
+  // lh with positive data.
+  __ lh(t1, MemOperand(a0, OFFSET_OF(T, ui)) );
+  __ sw(t1, MemOperand(a0, OFFSET_OF(T, r2)) );
+
+  // lh with negative data.
+  __ lh(t2, MemOperand(a0, OFFSET_OF(T, si)) );
+  __ sw(t2, MemOperand(a0, OFFSET_OF(T, r3)) );
+
+  // lhu with negative data.
+  __ lhu(t3, MemOperand(a0, OFFSET_OF(T, si)) );
+  __ sw(t3, MemOperand(a0, OFFSET_OF(T, r4)) );
+
+  // lb with negative data.
+  __ lb(t4, MemOperand(a0, OFFSET_OF(T, si)) );
+  __ sw(t4, MemOperand(a0, OFFSET_OF(T, r5)) );
+
+  // sh writes only 1/2 of word.
+  __ lui(t5, 0x3333);
+  __ ori(t5, t5, 0x3333);
+  __ sw(t5, MemOperand(a0, OFFSET_OF(T, r6)) );
+  __ lhu(t5, MemOperand(a0, OFFSET_OF(T, si)) );
+  __ sh(t5, MemOperand(a0, OFFSET_OF(T, r6)) );
+
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Object* code = HEAP->CreateCode(
+      desc,
+      Code::ComputeFlags(Code::STUB),
+      Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+  CHECK(code->IsCode());
+  F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+  t.ui = 0x11223344;
+  t.si = 0x99aabbcc;
+  Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+  USE(dummy);
+
+  CHECK_EQ(0x11223344, t.r1);
+  CHECK_EQ(0x3344, t.r2);
+  CHECK_EQ(0xffffbbcc, t.r3);
+  CHECK_EQ(0x0000bbcc, t.r4);
+  CHECK_EQ(0xffffffcc, t.r5);
+  CHECK_EQ(0x3333bbcc, t.r6);
+}
+
+
+TEST(MIPS7) {
+  // Test floating point compare and branch instructions.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    double a;
+    double b;
+    double c;
+    double d;
+    double e;
+    double f;
+    int32_t result;
+  } T;
+  T t;
+
+  // Create a function that accepts &t, and loads, manipulates, and stores
+  // the doubles t.a ... t.f.
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
+  Label neither_is_nan, less_than, outa_here;
+
+  if (CpuFeatures::IsSupported(FPU)) {
+    CpuFeatures::Scope scope(FPU);
+
+    __ ldc1(f4, MemOperand(a0, OFFSET_OF(T, a)) );
+    __ ldc1(f6, MemOperand(a0, OFFSET_OF(T, b)) );
+    __ c(UN, D, f4, f6);
+    __ bc1f(&neither_is_nan);
+    __ nop();
+    __ sw(zero_reg, MemOperand(a0, OFFSET_OF(T, result)) );
+    __ Branch(&outa_here);
+
+    __ bind(&neither_is_nan);
+
+    __ c(OLT, D, f6, f4, 2);
+    __ bc1t(&less_than, 2);
+    __ nop();
+    __ sw(zero_reg, MemOperand(a0, OFFSET_OF(T, result)) );
+    __ Branch(&outa_here);
+
+    __ bind(&less_than);
+    __ Addu(t0, zero_reg, Operand(1));
+    __ sw(t0, MemOperand(a0, OFFSET_OF(T, result)) );  // Set true.
+
+
+    // This test-case should have additional tests.
+
+    __ bind(&outa_here);
+
+    __ jr(ra);
+    __ nop();
+
+    CodeDesc desc;
+    assm.GetCode(&desc);
+    Object* code = HEAP->CreateCode(
+        desc,
+        Code::ComputeFlags(Code::STUB),
+        Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+    CHECK(code->IsCode());
+    F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+    t.a = 1.5e14;
+    t.b = 2.75e11;
+    t.c = 2.0;
+    t.d = -4.0;
+    t.e = 0.0;
+    t.f = 0.0;
+    t.result = 0;
+    Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+    USE(dummy);
+    CHECK_EQ(1.5e14, t.a);
+    CHECK_EQ(2.75e11, t.b);
+    CHECK_EQ(1, t.result);
+  }
+}
+
+
+TEST(MIPS8) {
+  // Test ROTR and ROTRV instructions.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    int32_t input;
+    int32_t result_rotr_4;
+    int32_t result_rotr_8;
+    int32_t result_rotr_12;
+    int32_t result_rotr_16;
+    int32_t result_rotr_20;
+    int32_t result_rotr_24;
+    int32_t result_rotr_28;
+    int32_t result_rotrv_4;
+    int32_t result_rotrv_8;
+    int32_t result_rotrv_12;
+    int32_t result_rotrv_16;
+    int32_t result_rotrv_20;
+    int32_t result_rotrv_24;
+    int32_t result_rotrv_28;
+  } T;
+  T t;
+
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
+
+  // Basic word load.
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, input)) );
+
+  // ROTR instruction (called through the Ror macro).
+  __ Ror(t1, t0, 0x0004);
+  __ Ror(t2, t0, 0x0008);
+  __ Ror(t3, t0, 0x000c);
+  __ Ror(t4, t0, 0x0010);
+  __ Ror(t5, t0, 0x0014);
+  __ Ror(t6, t0, 0x0018);
+  __ Ror(t7, t0, 0x001c);
+
+  // Basic word store.
+  __ sw(t1, MemOperand(a0, OFFSET_OF(T, result_rotr_4)) );
+  __ sw(t2, MemOperand(a0, OFFSET_OF(T, result_rotr_8)) );
+  __ sw(t3, MemOperand(a0, OFFSET_OF(T, result_rotr_12)) );
+  __ sw(t4, MemOperand(a0, OFFSET_OF(T, result_rotr_16)) );
+  __ sw(t5, MemOperand(a0, OFFSET_OF(T, result_rotr_20)) );
+  __ sw(t6, MemOperand(a0, OFFSET_OF(T, result_rotr_24)) );
+  __ sw(t7, MemOperand(a0, OFFSET_OF(T, result_rotr_28)) );
+
+  // ROTRV instruction (called through the Ror macro).
+  __ li(t7, 0x0004);
+  __ Ror(t1, t0, t7);
+  __ li(t7, 0x0008);
+  __ Ror(t2, t0, t7);
+  __ li(t7, 0x000C);
+  __ Ror(t3, t0, t7);
+  __ li(t7, 0x0010);
+  __ Ror(t4, t0, t7);
+  __ li(t7, 0x0014);
+  __ Ror(t5, t0, t7);
+  __ li(t7, 0x0018);
+  __ Ror(t6, t0, t7);
+  __ li(t7, 0x001C);
+  __ Ror(t7, t0, t7);
+
+  // Basic word store.
+  __ sw(t1, MemOperand(a0, OFFSET_OF(T, result_rotrv_4)) );
+  __ sw(t2, MemOperand(a0, OFFSET_OF(T, result_rotrv_8)) );
+  __ sw(t3, MemOperand(a0, OFFSET_OF(T, result_rotrv_12)) );
+  __ sw(t4, MemOperand(a0, OFFSET_OF(T, result_rotrv_16)) );
+  __ sw(t5, MemOperand(a0, OFFSET_OF(T, result_rotrv_20)) );
+  __ sw(t6, MemOperand(a0, OFFSET_OF(T, result_rotrv_24)) );
+  __ sw(t7, MemOperand(a0, OFFSET_OF(T, result_rotrv_28)) );
+
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Object* code = HEAP->CreateCode(
+      desc,
+      Code::ComputeFlags(Code::STUB),
+      Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+  CHECK(code->IsCode());
+  F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+  t.input = 0x12345678;
+  Object* dummy = CALL_GENERATED_CODE(f, &t, 0x0, 0, 0, 0);
+  USE(dummy);
+  CHECK_EQ(0x81234567, t.result_rotr_4);
+  CHECK_EQ(0x78123456, t.result_rotr_8);
+  CHECK_EQ(0x67812345, t.result_rotr_12);
+  CHECK_EQ(0x56781234, t.result_rotr_16);
+  CHECK_EQ(0x45678123, t.result_rotr_20);
+  CHECK_EQ(0x34567812, t.result_rotr_24);
+  CHECK_EQ(0x23456781, t.result_rotr_28);
+
+  CHECK_EQ(0x81234567, t.result_rotrv_4);
+  CHECK_EQ(0x78123456, t.result_rotrv_8);
+  CHECK_EQ(0x67812345, t.result_rotrv_12);
+  CHECK_EQ(0x56781234, t.result_rotrv_16);
+  CHECK_EQ(0x45678123, t.result_rotrv_20);
+  CHECK_EQ(0x34567812, t.result_rotrv_24);
+  CHECK_EQ(0x23456781, t.result_rotrv_28);
+}
+
+
+TEST(MIPS9) {
+  // Test BRANCH improvements.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
+  Label exit, exit2, exit3;
+
+  __ Branch(&exit, ge, a0, Operand(0x00000000));
+  __ Branch(&exit2, ge, a0, Operand(0x00001FFF));
+  __ Branch(&exit3, ge, a0, Operand(0x0001FFFF));
+
+  __ bind(&exit);
+  __ bind(&exit2);
+  __ bind(&exit3);
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Object* code = HEAP->CreateCode(
+      desc,
+      Code::ComputeFlags(Code::STUB),
+      Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+  CHECK(code->IsCode());
+}
+
+
+TEST(MIPS10) {
+  // Test conversions between doubles and long integers.
+  // Test hos the long ints map to FP regs pairs.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    double a;
+    double b;
+    int32_t dbl_mant;
+    int32_t dbl_exp;
+    int32_t long_hi;
+    int32_t long_lo;
+    int32_t b_long_hi;
+    int32_t b_long_lo;
+  } T;
+  T t;
+
+  Assembler assm(Isolate::Current(), NULL, 0);
+  Label L, C;
+
+  if (CpuFeatures::IsSupported(FPU)) {
+    CpuFeatures::Scope scope(FPU);
+
+    // Load all structure elements to registers.
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, a)));
+
+    // Save the raw bits of the double.
+    __ mfc1(t0, f0);
+    __ mfc1(t1, f1);
+    __ sw(t0, MemOperand(a0, OFFSET_OF(T, dbl_mant)));
+    __ sw(t1, MemOperand(a0, OFFSET_OF(T, dbl_exp)));
+
+    // Convert double in f0 to long, save hi/lo parts.
+    __ cvt_l_d(f0, f0);
+    __ mfc1(t0, f0);  // f0 has LS 32 bits of long.
+    __ mfc1(t1, f1);  // f1 has MS 32 bits of long.
+    __ sw(t0, MemOperand(a0, OFFSET_OF(T, long_lo)));
+    __ sw(t1, MemOperand(a0, OFFSET_OF(T, long_hi)));
+
+    // Convert the b long integers to double b.
+    __ lw(t0, MemOperand(a0, OFFSET_OF(T, b_long_lo)));
+    __ lw(t1, MemOperand(a0, OFFSET_OF(T, b_long_hi)));
+    __ mtc1(t0, f8);  // f8 has LS 32-bits.
+    __ mtc1(t1, f9);  // f9 has MS 32-bits.
+    __ cvt_d_l(f10, f8);
+    __ sdc1(f10, MemOperand(a0, OFFSET_OF(T, b)));
+
+    __ jr(ra);
+    __ nop();
+
+    CodeDesc desc;
+    assm.GetCode(&desc);
+    Object* code = HEAP->CreateCode(
+        desc,
+        Code::ComputeFlags(Code::STUB),
+        Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+    CHECK(code->IsCode());
+    F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+    t.a = 2.147483647e9;       // 0x7fffffff -> 0x41DFFFFFFFC00000 as double.
+    t.b_long_hi = 0x000000ff;  // 0xFF00FF00FF -> 0x426FE01FE01FE000 as double.
+    t.b_long_lo = 0x00ff00ff;
+    Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+    USE(dummy);
+
+    CHECK_EQ(0x41DFFFFF, t.dbl_exp);
+    CHECK_EQ(0xFFC00000, t.dbl_mant);
+    CHECK_EQ(0, t.long_hi);
+    CHECK_EQ(0x7fffffff, t.long_lo);
+    // 0xFF00FF00FF -> 1.095233372415e12.
+    CHECK_EQ(1.095233372415e12, t.b);
+  }
+}
+
+
+TEST(MIPS11) {
+  // Test LWL, LWR, SWL and SWR instructions.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    int32_t reg_init;
+    int32_t mem_init;
+    int32_t lwl_0;
+    int32_t lwl_1;
+    int32_t lwl_2;
+    int32_t lwl_3;
+    int32_t lwr_0;
+    int32_t lwr_1;
+    int32_t lwr_2;
+    int32_t lwr_3;
+    int32_t swl_0;
+    int32_t swl_1;
+    int32_t swl_2;
+    int32_t swl_3;
+    int32_t swr_0;
+    int32_t swr_1;
+    int32_t swr_2;
+    int32_t swr_3;
+  } T;
+  T t;
+
+  Assembler assm(Isolate::Current(), NULL, 0);
+
+  // Test all combinations of LWL and vAddr.
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ lwl(t0, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t0, MemOperand(a0, OFFSET_OF(T, lwl_0)) );
+
+  __ lw(t1, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ lwl(t1, MemOperand(a0, OFFSET_OF(T, mem_init) + 1) );
+  __ sw(t1, MemOperand(a0, OFFSET_OF(T, lwl_1)) );
+
+  __ lw(t2, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ lwl(t2, MemOperand(a0, OFFSET_OF(T, mem_init) + 2) );
+  __ sw(t2, MemOperand(a0, OFFSET_OF(T, lwl_2)) );
+
+  __ lw(t3, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ lwl(t3, MemOperand(a0, OFFSET_OF(T, mem_init) + 3) );
+  __ sw(t3, MemOperand(a0, OFFSET_OF(T, lwl_3)) );
+
+  // Test all combinations of LWR and vAddr.
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ lwr(t0, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t0, MemOperand(a0, OFFSET_OF(T, lwr_0)) );
+
+  __ lw(t1, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ lwr(t1, MemOperand(a0, OFFSET_OF(T, mem_init) + 1) );
+  __ sw(t1, MemOperand(a0, OFFSET_OF(T, lwr_1)) );
+
+  __ lw(t2, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ lwr(t2, MemOperand(a0, OFFSET_OF(T, mem_init) + 2) );
+  __ sw(t2, MemOperand(a0, OFFSET_OF(T, lwr_2)) );
+
+  __ lw(t3, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ lwr(t3, MemOperand(a0, OFFSET_OF(T, mem_init) + 3) );
+  __ sw(t3, MemOperand(a0, OFFSET_OF(T, lwr_3)) );
+
+  // Test all combinations of SWL and vAddr.
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t0, MemOperand(a0, OFFSET_OF(T, swl_0)) );
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ swl(t0, MemOperand(a0, OFFSET_OF(T, swl_0)) );
+
+  __ lw(t1, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t1, MemOperand(a0, OFFSET_OF(T, swl_1)) );
+  __ lw(t1, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ swl(t1, MemOperand(a0, OFFSET_OF(T, swl_1) + 1) );
+
+  __ lw(t2, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t2, MemOperand(a0, OFFSET_OF(T, swl_2)) );
+  __ lw(t2, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ swl(t2, MemOperand(a0, OFFSET_OF(T, swl_2) + 2) );
+
+  __ lw(t3, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t3, MemOperand(a0, OFFSET_OF(T, swl_3)) );
+  __ lw(t3, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ swl(t3, MemOperand(a0, OFFSET_OF(T, swl_3) + 3) );
+
+  // Test all combinations of SWR and vAddr.
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t0, MemOperand(a0, OFFSET_OF(T, swr_0)) );
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ swr(t0, MemOperand(a0, OFFSET_OF(T, swr_0)) );
+
+  __ lw(t1, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t1, MemOperand(a0, OFFSET_OF(T, swr_1)) );
+  __ lw(t1, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ swr(t1, MemOperand(a0, OFFSET_OF(T, swr_1) + 1) );
+
+  __ lw(t2, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t2, MemOperand(a0, OFFSET_OF(T, swr_2)) );
+  __ lw(t2, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ swr(t2, MemOperand(a0, OFFSET_OF(T, swr_2) + 2) );
+
+  __ lw(t3, MemOperand(a0, OFFSET_OF(T, mem_init)) );
+  __ sw(t3, MemOperand(a0, OFFSET_OF(T, swr_3)) );
+  __ lw(t3, MemOperand(a0, OFFSET_OF(T, reg_init)) );
+  __ swr(t3, MemOperand(a0, OFFSET_OF(T, swr_3) + 3) );
+
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Object* code = HEAP->CreateCode(
+      desc,
+      Code::ComputeFlags(Code::STUB),
+      Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+  CHECK(code->IsCode());
+  F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+  t.reg_init = 0xaabbccdd;
+  t.mem_init = 0x11223344;
+
+  Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+  USE(dummy);
+
+  CHECK_EQ(0x44bbccdd, t.lwl_0);
+  CHECK_EQ(0x3344ccdd, t.lwl_1);
+  CHECK_EQ(0x223344dd, t.lwl_2);
+  CHECK_EQ(0x11223344, t.lwl_3);
+
+  CHECK_EQ(0x11223344, t.lwr_0);
+  CHECK_EQ(0xaa112233, t.lwr_1);
+  CHECK_EQ(0xaabb1122, t.lwr_2);
+  CHECK_EQ(0xaabbcc11, t.lwr_3);
+
+  CHECK_EQ(0x112233aa, t.swl_0);
+  CHECK_EQ(0x1122aabb, t.swl_1);
+  CHECK_EQ(0x11aabbcc, t.swl_2);
+  CHECK_EQ(0xaabbccdd, t.swl_3);
+
+  CHECK_EQ(0xaabbccdd, t.swr_0);
+  CHECK_EQ(0xbbccdd44, t.swr_1);
+  CHECK_EQ(0xccdd3344, t.swr_2);
+  CHECK_EQ(0xdd223344, t.swr_3);
+}
+
+
+TEST(MIPS12) {
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+      int32_t  x;
+      int32_t  y;
+      int32_t  y1;
+      int32_t  y2;
+      int32_t  y3;
+      int32_t  y4;
+  } T;
+  T t;
+
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
+
+  __ mov(t6, fp);  // Save frame pointer.
+  __ mov(fp, a0);  // Access struct T by fp.
+  __ lw(t0, MemOperand(a0, OFFSET_OF(T, y)) );
+  __ lw(t3, MemOperand(a0, OFFSET_OF(T, y4)) );
+
+  __ addu(t1, t0, t3);
+  __ subu(t4, t0, t3);
+  __ nop();
+  __ push(t0);  // These instructions disappear after opt.
+  __ Pop();
+  __ addu(t0, t0, t0);
+  __ nop();
+  __ Pop();     // These instructions disappear after opt.
+  __ push(t3);
+  __ nop();
+  __ push(t3);  // These instructions disappear after opt.
+  __ pop(t3);
+  __ nop();
+  __ push(t3);
+  __ pop(t4);
+  __ nop();
+  __ sw(t0, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ lw(t0, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ nop();
+  __ sw(t0, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ lw(t1, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ nop();
+  __ push(t1);
+  __ lw(t1, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ pop(t1);
+  __ nop();
+  __ push(t1);
+  __ lw(t2, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ pop(t1);
+  __ nop();
+  __ push(t1);
+  __ lw(t2, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ pop(t2);
+  __ nop();
+  __ push(t2);
+  __ lw(t2, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ pop(t1);
+  __ nop();
+  __ push(t1);
+  __ lw(t2, MemOperand(fp, OFFSET_OF(T, y)) );
+  __ pop(t3);
+  __ nop();
+
+  __ mov(fp, t6);
+  __ jr(ra);
+  __ nop();
+
+  CodeDesc desc;
+  assm.GetCode(&desc);
+  Object* code = HEAP->CreateCode(
+      desc,
+      Code::ComputeFlags(Code::STUB),
+      Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+  CHECK(code->IsCode());
+  F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+  t.x = 1;
+  t.y = 2;
+  t.y1 = 3;
+  t.y2 = 4;
+  t.y3 = 0XBABA;
+  t.y4 = 0xDEDA;
+
+  Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+  USE(dummy);
+
+  CHECK_EQ(3, t.y1);
+}
+
+
+TEST(MIPS13) {
+  // Test Cvt_d_uw and Trunc_uw_d macros.
+  InitializeVM();
+  v8::HandleScope scope;
+
+  typedef struct {
+    double cvt_big_out;
+    double cvt_small_out;
+    uint32_t trunc_big_out;
+    uint32_t trunc_small_out;
+    uint32_t cvt_big_in;
+    uint32_t cvt_small_in;
+  } T;
+  T t;
+
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
+
+  if (CpuFeatures::IsSupported(FPU)) {
+    CpuFeatures::Scope scope(FPU);
+
+    __ sw(t0, MemOperand(a0, OFFSET_OF(T, cvt_small_in)));
+    __ Cvt_d_uw(f10, t0);
+    __ sdc1(f10, MemOperand(a0, OFFSET_OF(T, cvt_small_out)));
+
+    __ Trunc_uw_d(f10, f10);
+    __ swc1(f10, MemOperand(a0, OFFSET_OF(T, trunc_small_out)));
+
+    __ sw(t0, MemOperand(a0, OFFSET_OF(T, cvt_big_in)));
+    __ Cvt_d_uw(f8, t0);
+    __ sdc1(f8, MemOperand(a0, OFFSET_OF(T, cvt_big_out)));
+
+    __ Trunc_uw_d(f8, f8);
+    __ swc1(f8, MemOperand(a0, OFFSET_OF(T, trunc_big_out)));
+
+    __ jr(ra);
+    __ nop();
+
+    CodeDesc desc;
+    assm.GetCode(&desc);
+    Object* code = HEAP->CreateCode(
+        desc,
+        Code::ComputeFlags(Code::STUB),
+        Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+    CHECK(code->IsCode());
+    F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+
+    t.cvt_big_in = 0xFFFFFFFF;
+    t.cvt_small_in  = 333;
+
+    Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+    USE(dummy);
+
+    CHECK_EQ(t.cvt_big_out, static_cast<double>(t.cvt_big_in));
+    CHECK_EQ(t.cvt_small_out, static_cast<double>(t.cvt_small_in));
+
+    CHECK_EQ(static_cast<int>(t.trunc_big_out), static_cast<int>(t.cvt_big_in));
+    CHECK_EQ(static_cast<int>(t.trunc_small_out),
+             static_cast<int>(t.cvt_small_in));
+  }
+}
+
+
+TEST(MIPS14) {
+  // Test round, floor, ceil, trunc, cvt.
+  InitializeVM();
+  v8::HandleScope scope;
+
+#define ROUND_STRUCT_ELEMENT(x) \
+  int32_t x##_up_out; \
+  int32_t x##_down_out; \
+  int32_t neg_##x##_up_out; \
+  int32_t neg_##x##_down_out; \
+  uint32_t x##_err1_out; \
+  uint32_t x##_err2_out; \
+  uint32_t x##_err3_out; \
+  uint32_t x##_err4_out; \
+  int32_t x##_invalid_result;
+
+  typedef struct {
+    double round_up_in;
+    double round_down_in;
+    double neg_round_up_in;
+    double neg_round_down_in;
+    double err1_in;
+    double err2_in;
+    double err3_in;
+    double err4_in;
+
+    ROUND_STRUCT_ELEMENT(round)
+    ROUND_STRUCT_ELEMENT(floor)
+    ROUND_STRUCT_ELEMENT(ceil)
+    ROUND_STRUCT_ELEMENT(trunc)
+    ROUND_STRUCT_ELEMENT(cvt)
+  } T;
+  T t;
+
+#undef ROUND_STRUCT_ELEMENT
+
+  MacroAssembler assm(Isolate::Current(), NULL, 0);
+
+  if (CpuFeatures::IsSupported(FPU)) {
+    CpuFeatures::Scope scope(FPU);
+
+    // Save FCSR.
+    __ cfc1(a1, FCSR);
+    // Disable FPU exceptions.
+    __ ctc1(zero_reg, FCSR);
+#define RUN_ROUND_TEST(x) \
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, round_up_in))); \
+    __ x##_w_d(f0, f0); \
+    __ swc1(f0, MemOperand(a0, OFFSET_OF(T, x##_up_out))); \
+    \
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, round_down_in))); \
+    __ x##_w_d(f0, f0); \
+    __ swc1(f0, MemOperand(a0, OFFSET_OF(T, x##_down_out))); \
+    \
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, neg_round_up_in))); \
+    __ x##_w_d(f0, f0); \
+    __ swc1(f0, MemOperand(a0, OFFSET_OF(T, neg_##x##_up_out))); \
+    \
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, neg_round_down_in))); \
+    __ x##_w_d(f0, f0); \
+    __ swc1(f0, MemOperand(a0, OFFSET_OF(T, neg_##x##_down_out))); \
+    \
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, err1_in))); \
+    __ ctc1(zero_reg, FCSR); \
+    __ x##_w_d(f0, f0); \
+    __ cfc1(a2, FCSR); \
+    __ sw(a2, MemOperand(a0, OFFSET_OF(T, x##_err1_out))); \
+    \
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, err2_in))); \
+    __ ctc1(zero_reg, FCSR); \
+    __ x##_w_d(f0, f0); \
+    __ cfc1(a2, FCSR); \
+    __ sw(a2, MemOperand(a0, OFFSET_OF(T, x##_err2_out))); \
+    \
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, err3_in))); \
+    __ ctc1(zero_reg, FCSR); \
+    __ x##_w_d(f0, f0); \
+    __ cfc1(a2, FCSR); \
+    __ sw(a2, MemOperand(a0, OFFSET_OF(T, x##_err3_out))); \
+    \
+    __ ldc1(f0, MemOperand(a0, OFFSET_OF(T, err4_in))); \
+    __ ctc1(zero_reg, FCSR); \
+    __ x##_w_d(f0, f0); \
+    __ cfc1(a2, FCSR); \
+    __ sw(a2, MemOperand(a0, OFFSET_OF(T, x##_err4_out))); \
+    __ swc1(f0, MemOperand(a0, OFFSET_OF(T, x##_invalid_result)));
+
+    RUN_ROUND_TEST(round)
+    RUN_ROUND_TEST(floor)
+    RUN_ROUND_TEST(ceil)
+    RUN_ROUND_TEST(trunc)
+    RUN_ROUND_TEST(cvt)
+
+    // Restore FCSR.
+    __ ctc1(a1, FCSR);
+
+    __ jr(ra);
+    __ nop();
+
+    CodeDesc desc;
+    assm.GetCode(&desc);
+    Object* code = HEAP->CreateCode(
+        desc,
+        Code::ComputeFlags(Code::STUB),
+        Handle<Object>(HEAP->undefined_value()))->ToObjectChecked();
+    CHECK(code->IsCode());
+    F3 f = FUNCTION_CAST<F3>(Code::cast(code)->entry());
+
+    t.round_up_in = 123.51;
+    t.round_down_in = 123.49;
+    t.neg_round_up_in = -123.5;
+    t.neg_round_down_in = -123.49;
+    t.err1_in = 123.51;
+    t.err2_in = 1;
+    t.err3_in = static_cast<double>(1) + 0xFFFFFFFF;
+    t.err4_in = NAN;
+
+    Object* dummy = CALL_GENERATED_CODE(f, &t, 0, 0, 0, 0);
+    USE(dummy);
+
+#define GET_FPU_ERR(x) (static_cast<int>(x & kFCSRFlagMask))
+#define CHECK_ROUND_RESULT(type) \
+  CHECK(GET_FPU_ERR(t.type##_err1_out) & kFCSRInexactFlagMask); \
+  CHECK_EQ(0, GET_FPU_ERR(t.type##_err2_out)); \
+  CHECK(GET_FPU_ERR(t.type##_err3_out) & kFCSRInvalidOpFlagMask); \
+  CHECK(GET_FPU_ERR(t.type##_err4_out) & kFCSRInvalidOpFlagMask); \
+  CHECK_EQ(kFPUInvalidResult, t.type##_invalid_result);
+
+    CHECK_ROUND_RESULT(round);
+    CHECK_ROUND_RESULT(floor);
+    CHECK_ROUND_RESULT(ceil);
+    CHECK_ROUND_RESULT(cvt);
+  }
+}
+
 #undef __