Revert "[MIPS] Use hard float calling convention for managed code"
MipsMir2Lir::LockCallTemps() is broken for secondary architecture on aosp_mips64-eng.
This reverts commit a29449dcf57c57fe0876f51367985477317cc557.
Change-Id: I480ea7569d73aea7894fc0a6dd804b1135286a37
diff --git a/compiler/dex/quick/mips/codegen_mips.h b/compiler/dex/quick/mips/codegen_mips.h
index 2173253..43fbcbd 100644
--- a/compiler/dex/quick/mips/codegen_mips.h
+++ b/compiler/dex/quick/mips/codegen_mips.h
@@ -29,18 +29,15 @@
protected:
class InToRegStorageMipsMapper : public InToRegStorageMapper {
public:
- explicit InToRegStorageMipsMapper(Mir2Lir* m2l) : m2l_(m2l), cur_core_reg_(0), cur_fpu_reg_(0)
- {}
+ explicit InToRegStorageMipsMapper(Mir2Lir* m2l) : m2l_(m2l), cur_core_reg_(0) {}
virtual RegStorage GetNextReg(ShortyArg arg);
virtual void Reset() OVERRIDE {
cur_core_reg_ = 0;
- cur_fpu_reg_ = 0;
}
protected:
Mir2Lir* m2l_;
private:
size_t cur_core_reg_;
- size_t cur_fpu_reg_;
};
class InToRegStorageMips64Mapper : public InToRegStorageMapper {
diff --git a/compiler/dex/quick/mips/target_mips.cc b/compiler/dex/quick/mips/target_mips.cc
index 8abd592..ec4bad7 100644
--- a/compiler/dex/quick/mips/target_mips.cc
+++ b/compiler/dex/quick/mips/target_mips.cc
@@ -195,7 +195,7 @@
// Return a target-dependent special register.
RegStorage MipsMir2Lir::TargetReg(SpecialTargetRegister reg, WideKind wide_kind) {
if (!cu_->target64 && wide_kind == kWide) {
- DCHECK((kArg0 <= reg && reg < kArg7) || (kFArg0 == reg) || (kFArg2 == reg) || (kRet0 == reg));
+ DCHECK((kArg0 <= reg && reg < kArg7) || (kFArg0 <= reg && reg < kFArg15) || (kRet0 == reg));
RegStorage ret_reg = RegStorage::MakeRegPair(TargetReg(reg),
TargetReg(static_cast<SpecialTargetRegister>(reg + 1)));
if (!fpuIs32Bit_ && ret_reg.IsFloat()) {
@@ -250,27 +250,14 @@
RegStorage MipsMir2Lir::InToRegStorageMipsMapper::GetNextReg(ShortyArg arg) {
const SpecialTargetRegister coreArgMappingToPhysicalReg[] = {kArg1, kArg2, kArg3};
const size_t coreArgMappingToPhysicalRegSize = arraysize(coreArgMappingToPhysicalReg);
- const SpecialTargetRegister fpuArgMappingToPhysicalReg[] = {kFArg0, kFArg2};
- const size_t fpuArgMappingToPhysicalRegSize = arraysize(fpuArgMappingToPhysicalReg);
RegStorage result = RegStorage::InvalidReg();
- if (arg.IsFP()) {
- if (cur_fpu_reg_ < fpuArgMappingToPhysicalRegSize) {
- result = m2l_->TargetReg(fpuArgMappingToPhysicalReg[cur_fpu_reg_++],
- arg.IsWide() ? kWide : kNotWide);
- }
- } else {
- if (cur_core_reg_ < coreArgMappingToPhysicalRegSize) {
- if (arg.IsWide() && cur_core_reg_ == 0) {
- // Don't use a1-a2 as a register pair, move to a2-a3 instead.
- cur_core_reg_++;
- }
- result = m2l_->TargetReg(coreArgMappingToPhysicalReg[cur_core_reg_++],
- arg.IsRef() ? kRef : kNotWide);
- if (arg.IsWide() && cur_core_reg_ < coreArgMappingToPhysicalRegSize) {
- result = RegStorage::MakeRegPair(
- result, m2l_->TargetReg(coreArgMappingToPhysicalReg[cur_core_reg_++], kNotWide));
- }
+ if (cur_core_reg_ < coreArgMappingToPhysicalRegSize) {
+ result = m2l_->TargetReg(coreArgMappingToPhysicalReg[cur_core_reg_++],
+ arg.IsRef() ? kRef : kNotWide);
+ if (arg.IsWide() && cur_core_reg_ < coreArgMappingToPhysicalRegSize) {
+ result = RegStorage::MakeRegPair(
+ result, m2l_->TargetReg(coreArgMappingToPhysicalReg[cur_core_reg_++], kNotWide));
}
}
return result;
@@ -667,18 +654,6 @@
LockTemp(TargetReg(kArg5));
LockTemp(TargetReg(kArg6));
LockTemp(TargetReg(kArg7));
- } else {
- LockTemp(TargetReg(kFArg0));
- LockTemp(TargetReg(kFArg1));
- LockTemp(TargetReg(kFArg2));
- LockTemp(TargetReg(kFArg3));
- if (fpuIs32Bit_) {
- LockTemp(rs_rD6_fr0);
- LockTemp(rs_rD7_fr0);
- } else {
- LockTemp(rs_rD6_fr1);
- LockTemp(rs_rD7_fr1);
- }
}
}
@@ -693,18 +668,6 @@
FreeTemp(TargetReg(kArg5));
FreeTemp(TargetReg(kArg6));
FreeTemp(TargetReg(kArg7));
- } else {
- FreeTemp(TargetReg(kFArg0));
- FreeTemp(TargetReg(kFArg1));
- FreeTemp(TargetReg(kFArg2));
- FreeTemp(TargetReg(kFArg3));
- if (fpuIs32Bit_) {
- FreeTemp(rs_rD6_fr0);
- FreeTemp(rs_rD7_fr0);
- } else {
- FreeTemp(rs_rD6_fr1);
- FreeTemp(rs_rD7_fr1);
- }
}
FreeTemp(TargetReg(kHiddenArg));
}
diff --git a/compiler/jni/jni_cfi_test_expected.inc b/compiler/jni/jni_cfi_test_expected.inc
index 8b5fdc3..dd4496f 100644
--- a/compiler/jni/jni_cfi_test_expected.inc
+++ b/compiler/jni/jni_cfi_test_expected.inc
@@ -329,18 +329,17 @@
0x34, 0x00, 0xAF, 0xAF, 0x30, 0x00, 0xAE, 0xAF, 0x2C, 0x00, 0xAD, 0xAF,
0x28, 0x00, 0xAC, 0xAF, 0x24, 0x00, 0xAB, 0xAF, 0x20, 0x00, 0xAA, 0xAF,
0x1C, 0x00, 0xA9, 0xAF, 0x18, 0x00, 0xA8, 0xAF, 0x00, 0x00, 0xA4, 0xAF,
- 0x44, 0x00, 0xA5, 0xAF, 0x48, 0x00, 0xAC, 0xE7, 0x4C, 0x00, 0xA6, 0xAF,
- 0x50, 0x00, 0xA7, 0xAF, 0xE0, 0xFF, 0xBD, 0x27, 0x20, 0x00, 0xBD, 0x27,
- 0x18, 0x00, 0xA8, 0x8F, 0x1C, 0x00, 0xA9, 0x8F, 0x20, 0x00, 0xAA, 0x8F,
- 0x24, 0x00, 0xAB, 0x8F, 0x28, 0x00, 0xAC, 0x8F, 0x2C, 0x00, 0xAD, 0x8F,
- 0x30, 0x00, 0xAE, 0x8F, 0x34, 0x00, 0xAF, 0x8F, 0x38, 0x00, 0xB8, 0x8F,
- 0x3C, 0x00, 0xBF, 0x8F, 0x40, 0x00, 0xBD, 0x27, 0x09, 0x00, 0xE0, 0x03,
- 0x00, 0x00, 0x00, 0x00,
+ 0x44, 0x00, 0xA5, 0xAF, 0x48, 0x00, 0xA6, 0xAF, 0x4C, 0x00, 0xA7, 0xAF,
+ 0xE0, 0xFF, 0xBD, 0x27, 0x20, 0x00, 0xBD, 0x27, 0x18, 0x00, 0xA8, 0x8F,
+ 0x1C, 0x00, 0xA9, 0x8F, 0x20, 0x00, 0xAA, 0x8F, 0x24, 0x00, 0xAB, 0x8F,
+ 0x28, 0x00, 0xAC, 0x8F, 0x2C, 0x00, 0xAD, 0x8F, 0x30, 0x00, 0xAE, 0x8F,
+ 0x34, 0x00, 0xAF, 0x8F, 0x38, 0x00, 0xB8, 0x8F, 0x3C, 0x00, 0xBF, 0x8F,
+ 0x40, 0x00, 0xBD, 0x27, 0x09, 0x00, 0xE0, 0x03, 0x00, 0x00, 0x00, 0x00,
};
static constexpr uint8_t expected_cfi_kMips[] = {
0x44, 0x0E, 0x40, 0x44, 0x9F, 0x01, 0x44, 0x98, 0x02, 0x44, 0x8F, 0x03,
0x44, 0x8E, 0x04, 0x44, 0x8D, 0x05, 0x44, 0x8C, 0x06, 0x44, 0x8B, 0x07,
- 0x44, 0x8A, 0x08, 0x44, 0x89, 0x09, 0x44, 0x88, 0x0A, 0x58, 0x0E, 0x60,
+ 0x44, 0x8A, 0x08, 0x44, 0x89, 0x09, 0x44, 0x88, 0x0A, 0x54, 0x0E, 0x60,
0x44, 0x0E, 0x40, 0x0A, 0x44, 0xC8, 0x44, 0xC9, 0x44, 0xCA, 0x44, 0xCB,
0x44, 0xCC, 0x44, 0xCD, 0x44, 0xCE, 0x44, 0xCF, 0x44, 0xD8, 0x44, 0xDF,
0x44, 0x0E, 0x00, 0x48, 0x0B, 0x0E, 0x40,
@@ -369,40 +368,39 @@
// 0x0000002c: .cfi_offset: r8 at cfa-40
// 0x0000002c: sw r4, +0(r29)
// 0x00000030: sw r5, +68(r29)
-// 0x00000034: swc1 f12, +72(r29)
-// 0x00000038: sw r6, +76(r29)
-// 0x0000003c: sw r7, +80(r29)
-// 0x00000040: addiu r29, r29, -32
-// 0x00000044: .cfi_def_cfa_offset: 96
-// 0x00000044: addiu r29, r29, 32
-// 0x00000048: .cfi_def_cfa_offset: 64
-// 0x00000048: .cfi_remember_state
-// 0x00000048: lw r8, +24(r29)
-// 0x0000004c: .cfi_restore: r8
-// 0x0000004c: lw r9, +28(r29)
-// 0x00000050: .cfi_restore: r9
-// 0x00000050: lw r10, +32(r29)
-// 0x00000054: .cfi_restore: r10
-// 0x00000054: lw r11, +36(r29)
-// 0x00000058: .cfi_restore: r11
-// 0x00000058: lw r12, +40(r29)
-// 0x0000005c: .cfi_restore: r12
-// 0x0000005c: lw r13, +44(r29)
-// 0x00000060: .cfi_restore: r13
-// 0x00000060: lw r14, +48(r29)
-// 0x00000064: .cfi_restore: r14
-// 0x00000064: lw r15, +52(r29)
-// 0x00000068: .cfi_restore: r15
-// 0x00000068: lw r24, +56(r29)
-// 0x0000006c: .cfi_restore: r24
-// 0x0000006c: lw r31, +60(r29)
-// 0x00000070: .cfi_restore: r31
-// 0x00000070: addiu r29, r29, 64
-// 0x00000074: .cfi_def_cfa_offset: 0
-// 0x00000074: jr r31
-// 0x00000078: nop
-// 0x0000007c: .cfi_restore_state
-// 0x0000007c: .cfi_def_cfa_offset: 64
+// 0x00000034: sw r6, +72(r29)
+// 0x00000038: sw r7, +76(r29)
+// 0x0000003c: addiu r29, r29, -32
+// 0x00000040: .cfi_def_cfa_offset: 96
+// 0x00000040: addiu r29, r29, 32
+// 0x00000044: .cfi_def_cfa_offset: 64
+// 0x00000044: .cfi_remember_state
+// 0x00000044: lw r8, +24(r29)
+// 0x00000048: .cfi_restore: r8
+// 0x00000048: lw r9, +28(r29)
+// 0x0000004c: .cfi_restore: r9
+// 0x0000004c: lw r10, +32(r29)
+// 0x00000050: .cfi_restore: r10
+// 0x00000050: lw r11, +36(r29)
+// 0x00000054: .cfi_restore: r11
+// 0x00000054: lw r12, +40(r29)
+// 0x00000058: .cfi_restore: r12
+// 0x00000058: lw r13, +44(r29)
+// 0x0000005c: .cfi_restore: r13
+// 0x0000005c: lw r14, +48(r29)
+// 0x00000060: .cfi_restore: r14
+// 0x00000060: lw r15, +52(r29)
+// 0x00000064: .cfi_restore: r15
+// 0x00000064: lw r24, +56(r29)
+// 0x00000068: .cfi_restore: r24
+// 0x00000068: lw r31, +60(r29)
+// 0x0000006c: .cfi_restore: r31
+// 0x0000006c: addiu r29, r29, 64
+// 0x00000070: .cfi_def_cfa_offset: 0
+// 0x00000070: jr r31
+// 0x00000074: nop
+// 0x00000078: .cfi_restore_state
+// 0x00000078: .cfi_def_cfa_offset: 64
static constexpr uint8_t expected_asm_kMips64[] = {
0xA0, 0xFF, 0xBD, 0x67, 0x58, 0x00, 0xBF, 0xFF, 0x50, 0x00, 0xBE, 0xFF,
diff --git a/compiler/jni/quick/mips/calling_convention_mips.cc b/compiler/jni/quick/mips/calling_convention_mips.cc
index be2397f..4e716b5 100644
--- a/compiler/jni/quick/mips/calling_convention_mips.cc
+++ b/compiler/jni/quick/mips/calling_convention_mips.cc
@@ -23,10 +23,6 @@
namespace art {
namespace mips {
-static const Register kCoreArgumentRegisters[] = { A0, A1, A2, A3 };
-static const FRegister kFArgumentRegisters[] = { F12, F14 };
-static const DRegister kDArgumentRegisters[] = { D6, D7 };
-
// Calling convention
ManagedRegister MipsManagedRuntimeCallingConvention::InterproceduralScratchRegister() {
return MipsManagedRegister::FromCoreRegister(T9);
@@ -93,49 +89,14 @@
const ManagedRegisterEntrySpills& MipsManagedRuntimeCallingConvention::EntrySpills() {
// We spill the argument registers on MIPS to free them up for scratch use, we then assume
// all arguments are on the stack.
- if ((entry_spills_.size() == 0) && (NumArgs() > 0)) {
- uint32_t gpr_index = 1; // Skip A0, it is used for ArtMethod*.
- uint32_t fpr_index = 0;
-
- for (ResetIterator(FrameOffset(0)); HasNext(); Next()) {
- if (IsCurrentParamAFloatOrDouble()) {
- if (IsCurrentParamADouble()) {
- if (fpr_index < arraysize(kDArgumentRegisters)) {
- entry_spills_.push_back(
- MipsManagedRegister::FromDRegister(kDArgumentRegisters[fpr_index++]));
- } else {
- entry_spills_.push_back(ManagedRegister::NoRegister(), 8);
- }
- } else {
- if (fpr_index < arraysize(kFArgumentRegisters)) {
- entry_spills_.push_back(
- MipsManagedRegister::FromFRegister(kFArgumentRegisters[fpr_index++]));
- } else {
- entry_spills_.push_back(ManagedRegister::NoRegister(), 4);
- }
- }
- } else {
- if (IsCurrentParamALong() && !IsCurrentParamAReference()) {
- if (gpr_index == 1) {
- // Don't use a1-a2 as a register pair, move to a2-a3 instead.
- gpr_index++;
- }
- if (gpr_index < arraysize(kCoreArgumentRegisters) - 1) {
- entry_spills_.push_back(
- MipsManagedRegister::FromCoreRegister(kCoreArgumentRegisters[gpr_index++]));
- } else if (gpr_index == arraysize(kCoreArgumentRegisters) - 1) {
- gpr_index++;
- entry_spills_.push_back(ManagedRegister::NoRegister(), 4);
- } else {
- entry_spills_.push_back(ManagedRegister::NoRegister(), 4);
- }
- }
-
- if (gpr_index < arraysize(kCoreArgumentRegisters)) {
- entry_spills_.push_back(
- MipsManagedRegister::FromCoreRegister(kCoreArgumentRegisters[gpr_index++]));
- } else {
- entry_spills_.push_back(ManagedRegister::NoRegister(), 4);
+ if (entry_spills_.size() == 0) {
+ size_t num_spills = NumArgs() + NumLongOrDoubleArgs();
+ if (num_spills > 0) {
+ entry_spills_.push_back(MipsManagedRegister::FromCoreRegister(A1));
+ if (num_spills > 1) {
+ entry_spills_.push_back(MipsManagedRegister::FromCoreRegister(A2));
+ if (num_spills > 2) {
+ entry_spills_.push_back(MipsManagedRegister::FromCoreRegister(A3));
}
}
}
diff --git a/compiler/utils/mips/assembler_mips.cc b/compiler/utils/mips/assembler_mips.cc
index c5fae92..c09dfcc 100644
--- a/compiler/utils/mips/assembler_mips.cc
+++ b/compiler/utils/mips/assembler_mips.cc
@@ -359,19 +359,23 @@
}
void MipsAssembler::AddD(DRegister fd, DRegister fs, DRegister ft) {
- EmitFR(0x11, 0x11, ConvertDRegToFReg(ft), ConvertDRegToFReg(fs), ConvertDRegToFReg(fd), 0x0);
+ EmitFR(0x11, 0x11, static_cast<FRegister>(ft), static_cast<FRegister>(fs),
+ static_cast<FRegister>(fd), 0x0);
}
void MipsAssembler::SubD(DRegister fd, DRegister fs, DRegister ft) {
- EmitFR(0x11, 0x11, ConvertDRegToFReg(ft), ConvertDRegToFReg(fs), ConvertDRegToFReg(fd), 0x1);
+ EmitFR(0x11, 0x11, static_cast<FRegister>(ft), static_cast<FRegister>(fs),
+ static_cast<FRegister>(fd), 0x1);
}
void MipsAssembler::MulD(DRegister fd, DRegister fs, DRegister ft) {
- EmitFR(0x11, 0x11, ConvertDRegToFReg(ft), ConvertDRegToFReg(fs), ConvertDRegToFReg(fd), 0x2);
+ EmitFR(0x11, 0x11, static_cast<FRegister>(ft), static_cast<FRegister>(fs),
+ static_cast<FRegister>(fd), 0x2);
}
void MipsAssembler::DivD(DRegister fd, DRegister fs, DRegister ft) {
- EmitFR(0x11, 0x11, ConvertDRegToFReg(ft), ConvertDRegToFReg(fs), ConvertDRegToFReg(fd), 0x3);
+ EmitFR(0x11, 0x11, static_cast<FRegister>(ft), static_cast<FRegister>(fs),
+ static_cast<FRegister>(fd), 0x3);
}
void MipsAssembler::MovS(FRegister fd, FRegister fs) {
@@ -379,31 +383,32 @@
}
void MipsAssembler::MovD(DRegister fd, DRegister fs) {
- EmitFR(0x11, 0x11, static_cast<FRegister>(0), ConvertDRegToFReg(fs), ConvertDRegToFReg(fd), 0x6);
+ EmitFR(0x11, 0x11, static_cast<FRegister>(0), static_cast<FRegister>(fs),
+ static_cast<FRegister>(fd), 0x6);
}
void MipsAssembler::Mfc1(Register rt, FRegister fs) {
- EmitFR(0x11, 0x00, ConvertRegToFReg(rt), fs, static_cast<FRegister>(0), 0x0);
+ EmitFR(0x11, 0x00, static_cast<FRegister>(rt), fs, static_cast<FRegister>(0), 0x0);
}
void MipsAssembler::Mtc1(FRegister ft, Register rs) {
- EmitFR(0x11, 0x04, ft, ConvertRegToFReg(rs), static_cast<FRegister>(0), 0x0);
+ EmitFR(0x11, 0x04, ft, static_cast<FRegister>(rs), static_cast<FRegister>(0), 0x0);
}
void MipsAssembler::Lwc1(FRegister ft, Register rs, uint16_t imm16) {
- EmitI(0x31, rs, ConvertFRegToReg(ft), imm16);
+ EmitI(0x31, rs, static_cast<Register>(ft), imm16);
}
void MipsAssembler::Ldc1(DRegister ft, Register rs, uint16_t imm16) {
- EmitI(0x35, rs, ConvertDRegToReg(ft), imm16);
+ EmitI(0x35, rs, static_cast<Register>(ft), imm16);
}
void MipsAssembler::Swc1(FRegister ft, Register rs, uint16_t imm16) {
- EmitI(0x39, rs, ConvertFRegToReg(ft), imm16);
+ EmitI(0x39, rs, static_cast<Register>(ft), imm16);
}
void MipsAssembler::Sdc1(DRegister ft, Register rs, uint16_t imm16) {
- EmitI(0x3d, rs, ConvertDRegToReg(ft), imm16);
+ EmitI(0x3d, rs, static_cast<Register>(ft), imm16);
}
void MipsAssembler::Break() {
@@ -524,7 +529,7 @@
}
}
-void MipsAssembler::StoreSToOffset(FRegister reg, Register base, int32_t offset) {
+void MipsAssembler::StoreFToOffset(FRegister reg, Register base, int32_t offset) {
Swc1(reg, base, offset);
}
@@ -561,22 +566,9 @@
StoreToOffset(kStoreWord, method_reg.AsMips().AsCoreRegister(), SP, 0);
// Write out entry spills.
- int32_t offset = frame_size + kFramePointerSize;
for (size_t i = 0; i < entry_spills.size(); ++i) {
- MipsManagedRegister reg = entry_spills.at(i).AsMips();
- if (reg.IsNoRegister()) {
- ManagedRegisterSpill spill = entry_spills.at(i);
- offset += spill.getSize();
- } else if (reg.IsCoreRegister()) {
- StoreToOffset(kStoreWord, reg.AsCoreRegister(), SP, offset);
- offset += 4;
- } else if (reg.IsFRegister()) {
- StoreSToOffset(reg.AsFRegister(), SP, offset);
- offset += 4;
- } else if (reg.IsDRegister()) {
- StoreDToOffset(reg.AsDRegister(), SP, offset);
- offset += 8;
- }
+ Register reg = entry_spills.at(i).AsMips().AsCoreRegister();
+ StoreToOffset(kStoreWord, reg, SP, frame_size + kFramePointerSize + (i * kFramePointerSize));
}
}
@@ -632,7 +624,7 @@
StoreToOffset(kStoreWord, src.AsRegisterPairHigh(),
SP, dest.Int32Value() + 4);
} else if (src.IsFRegister()) {
- StoreSToOffset(src.AsFRegister(), SP, dest.Int32Value());
+ StoreFToOffset(src.AsFRegister(), SP, dest.Int32Value());
} else {
CHECK(src.IsDRegister());
StoreDToOffset(src.AsDRegister(), SP, dest.Int32Value());
diff --git a/compiler/utils/mips/assembler_mips.h b/compiler/utils/mips/assembler_mips.h
index 6c8b162..df95dad 100644
--- a/compiler/utils/mips/assembler_mips.h
+++ b/compiler/utils/mips/assembler_mips.h
@@ -141,7 +141,7 @@
void LoadSFromOffset(FRegister reg, Register base, int32_t offset);
void LoadDFromOffset(DRegister reg, Register base, int32_t offset);
void StoreToOffset(StoreOperandType type, Register reg, Register base, int32_t offset);
- void StoreSToOffset(FRegister reg, Register base, int32_t offset);
+ void StoreFToOffset(FRegister reg, Register base, int32_t offset);
void StoreDToOffset(DRegister reg, Register base, int32_t offset);
// Emit data (e.g. encoded instruction or immediate) to the instruction stream.
@@ -277,19 +277,6 @@
int32_t EncodeBranchOffset(int offset, int32_t inst, bool is_jump);
int DecodeBranchOffset(int32_t inst, bool is_jump);
- FRegister ConvertDRegToFReg(DRegister reg) {
- return static_cast<FRegister>(reg * 2);
- }
- Register ConvertDRegToReg(DRegister reg) {
- return static_cast<Register>(reg * 2);
- }
- Register ConvertFRegToReg(FRegister reg) {
- return static_cast<Register>(reg);
- }
- FRegister ConvertRegToFReg(Register reg) {
- return static_cast<FRegister>(reg);
- }
-
DISALLOW_COPY_AND_ASSIGN(MipsAssembler);
};