Uses assembler macro for dart SP setup on arm64.

runtime/vm/assembler_arm64_test.cc

 // Copyright (c) 2013, 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 "vm/globals.h"
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/os.h"
 #include "vm/unit_test.h"
 #include "vm/virtual_memory.h"
 
 namespace dart {
 
+static const intptr_t kTestStackSpace = 512 * kWordSize;
+
 #define __ assembler->
 
 ASSEMBLER_TEST_GENERATE(Simple, assembler) {
   __ add(R0, ZR, Operand(ZR));
   __ add(R0, R0, Operand(42));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(Simple, test) {
@@ skipping 253 matching lines @@
 
 
 ASSEMBLER_TEST_RUN(AddExtReg, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 // Loads and Stores.
 ASSEMBLER_TEST_GENERATE(SimpleLoadStore, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ movz(R0, 43, 0);
   __ movz(R1, 42, 0);
   __ str(R1, Address(SP, -1*kWordSize, Address::PreIndex));
   __ ldr(R0, Address(SP, 1*kWordSize, Address::PostIndex));
   __ ret();

[regis, 2014/06/03 20:50:54]

You need to copy SP to CSP before returning, no?

[zra, 2014/06/03 21:25:51]

In general yes. I think it didn't matter here because I must have gotten lucky
and nothing was saved on the stack before the call that needed to be restored
from the right place. I've changed to restore CSP.

 }
 
 
 ASSEMBLER_TEST_RUN(SimpleLoadStore, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(SimpleLoadStoreHeapTag, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ movz(R0, 43, 0);
   __ movz(R1, 42, 0);
   __ add(R2, SP, Operand(1));
   __ str(R1, Address(R2, -1));
   __ ldr(R0, Address(R2, -1));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(SimpleLoadStoreHeapTag, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadStoreLargeIndex, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ movz(R0, 43, 0);
   __ movz(R1, 42, 0);
   // Largest negative offset that can fit in the signed 9-bit immediate field.
   __ str(R1, Address(SP, -32*kWordSize, Address::PreIndex));
   // Largest positive kWordSize aligned offset that we can fit.
   __ ldr(R0, Address(SP, 31*kWordSize, Address::PostIndex));
   // Correction.
   __ add(SP, SP, Operand(kWordSize));  // Restore SP.
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadStoreLargeIndex, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadStoreLargeOffset, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ movz(R0, 43, 0);
   __ movz(R1, 42, 0);
   __ sub(SP, SP, Operand(512*kWordSize));
   __ str(R1, Address(SP, 512*kWordSize, Address::Offset));
   __ add(SP, SP, Operand(512*kWordSize));
   __ ldr(R0, Address(SP));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadStoreLargeOffset, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadStoreExtReg, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ movz(R0, 43, 0);
   __ movz(R1, 42, 0);
   __ movz(R2, 0xfff8, 0);
   __ movk(R2, 0xffff, 1);  // R2 <- -8 (int32_t).
   // This should sign extend R2, and add to SP to get address,
   // i.e. SP - kWordSize.
   __ str(R1, Address(SP, R2, SXTW));
   __ sub(SP, SP, Operand(kWordSize));
   __ ldr(R0, Address(SP));
   __ add(SP, SP, Operand(kWordSize));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadStoreExtReg, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadStoreScaledReg, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ movz(R0, 43, 0);
   __ movz(R1, 42, 0);
   __ movz(R2, 10, 0);
   __ sub(SP, SP, Operand(10*kWordSize));
   // Store R1 into SP + R2 * kWordSize.
   __ str(R1, Address(SP, R2, UXTX, Address::Scaled));
   __ ldr(R0, Address(SP, R2, UXTX, Address::Scaled));
   __ add(SP, SP, Operand(10*kWordSize));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadStoreScaledReg, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadSigned32Bit, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadImmediate(R1, 0xffffffff, kNoPP);
   __ str(R1, Address(SP, -4, Address::PreIndex, kWord), kWord);
   __ ldr(R0, Address(SP), kWord);
   __ ldr(R1, Address(SP, 4, Address::PostIndex, kWord), kWord);
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadSigned32Bit, test) {
   typedef int64_t (*Int64Return)();
@@ skipping 915 matching lines @@
 
 
 ASSEMBLER_TEST_RUN(LoadImmediateMedNeg4, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(-0x12341234, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 // Loading immediate values with the object pool.
 ASSEMBLER_TEST_GENERATE(LoadImmediatePPSmall, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ TagAndPushPP();  // Save caller's pool pointer and load a new one here.
   __ LoadPoolPointer(PP);
   __ LoadImmediate(R0, 42, PP);
   __ PopAndUntagPP();
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadImmediatePPSmall, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(42, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadImmediatePPMed, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ TagAndPushPP();  // Save caller's pool pointer and load a new one here.
   __ LoadPoolPointer(PP);
   __ LoadImmediate(R0, 0xf1234123, PP);
   __ PopAndUntagPP();
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadImmediatePPMed, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(0xf1234123, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadImmediatePPMed2, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ TagAndPushPP();  // Save caller's pool pointer and load a new one here.
   __ LoadPoolPointer(PP);
   __ LoadImmediate(R0, 0x4321f1234124, PP);
   __ PopAndUntagPP();
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadImmediatePPMed2, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(
       0x4321f1234124, EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadImmediatePPLarge, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ TagAndPushPP();  // Save caller's pool pointer and load a new one here.
   __ LoadPoolPointer(PP);
   __ LoadImmediate(R0, 0x9287436598237465, PP);
   __ PopAndUntagPP();
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadImmediatePPLarge, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(static_cast<int64_t>(0x9287436598237465),
             EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 // LoadObject null.
 ASSEMBLER_TEST_GENERATE(LoadObjectNull, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ TagAndPushPP();  // Save caller's pool pointer and load a new one here.
   __ LoadPoolPointer(PP);
   __ LoadObject(R0, Object::null_object(), PP);
   __ PopAndUntagPP();
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadObjectNull, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(reinterpret_cast<int64_t>(Object::null()),
             EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadObjectTrue, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ TagAndPushPP();  // Save caller's pool pointer and load a new one here.
   __ LoadPoolPointer(PP);
   __ LoadObject(R0, Bool::True(), PP);
   __ PopAndUntagPP();
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadObjectTrue, test) {
   typedef int64_t (*Int64Return)();
   EXPECT_EQ(reinterpret_cast<int64_t>(Bool::True().raw()),
             EXECUTE_TEST_CODE_INT64(Int64Return, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(LoadObjectFalse, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ TagAndPushPP();  // Save caller's pool pointer and load a new one here.
   __ LoadPoolPointer(PP);
   __ LoadObject(R0, Bool::False(), PP);
   __ PopAndUntagPP();
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(LoadObjectFalse, test) {
   typedef int64_t (*Int64Return)();
@@ skipping 140 matching lines @@
 }
 
 
 ASSEMBLER_TEST_RUN(Fmovdr, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(1.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(FldrdFstrdPrePostIndex, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V1, 42.0, kNoPP);
   __ fstrd(V1, Address(SP, -1*kWordSize, Address::PreIndex));
   __ fldrd(V0, Address(SP, 1*kWordSize, Address::PostIndex));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(FldrdFstrdPrePostIndex, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(FldrsFstrsPrePostIndex, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V1, 42.0, kNoPP);
   __ fcvtsd(V2, V1);
   __ fstrs(V2, Address(SP, -1*kWordSize, Address::PreIndex));
   __ fldrs(V3, Address(SP, 1*kWordSize, Address::PostIndex));
   __ fcvtds(V0, V3);
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(FldrsFstrsPrePostIndex, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(FldrqFstrqPrePostIndex, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V1, 21.0, kNoPP);
   __ LoadDImmediate(V2, 21.0, kNoPP);
   __ LoadImmediate(R1, 42, kNoPP);
   __ Push(R1);
   __ PushDouble(V1);
   __ PushDouble(V2);
   __ fldrq(V3, Address(SP, 2 * kWordSize, Address::PostIndex));
   __ Pop(R0);
   __ fstrq(V3, Address(SP, -2 * kWordSize, Address::PreIndex));
   __ PopDouble(V0);
@@ skipping 150 matching lines @@
 }
 
 
 ASSEMBLER_TEST_RUN(Fsubd, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(FldrdFstrdHeapTag, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V0, 43.0, kNoPP);
   __ LoadDImmediate(V1, 42.0, kNoPP);
   __ AddImmediate(SP, SP, -1 * kWordSize, kNoPP);
   __ add(R2, SP, Operand(1));
   __ fstrd(V1, Address(R2, -1));
   __ fldrd(V0, Address(R2, -1));
   __ AddImmediate(SP, SP, 1 * kWordSize, kNoPP);
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(FldrdFstrdHeapTag, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(FldrdFstrdLargeIndex, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V0, 43.0, kNoPP);
   __ LoadDImmediate(V1, 42.0, kNoPP);
   // Largest negative offset that can fit in the signed 9-bit immediate field.
   __ fstrd(V1, Address(SP, -32*kWordSize, Address::PreIndex));
   // Largest positive kWordSize aligned offset that we can fit.
   __ fldrd(V0, Address(SP, 31*kWordSize, Address::PostIndex));
   // Correction.
   __ add(SP, SP, Operand(kWordSize));  // Restore SP.
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(FldrdFstrdLargeIndex, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(FldrdFstrdLargeOffset, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V0, 43.0, kNoPP);
   __ LoadDImmediate(V1, 42.0, kNoPP);
   __ sub(SP, SP, Operand(512*kWordSize));
   __ fstrd(V1, Address(SP, 512*kWordSize, Address::Offset));
   __ add(SP, SP, Operand(512*kWordSize));
   __ fldrd(V0, Address(SP));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(FldrdFstrdLargeOffset, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(FldrdFstrdExtReg, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V0, 43.0, kNoPP);
   __ LoadDImmediate(V1, 42.0, kNoPP);
   __ movz(R2, 0xfff8, 0);
   __ movk(R2, 0xffff, 1);  // R2 <- -8 (int32_t).
   // This should sign extend R2, and add to SP to get address,
   // i.e. SP - kWordSize.
   __ fstrd(V1, Address(SP, R2, SXTW));
   __ sub(SP, SP, Operand(kWordSize));
   __ fldrd(V0, Address(SP));
   __ add(SP, SP, Operand(kWordSize));
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(FldrdFstrdExtReg, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(FldrdFstrdScaledReg, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V0, 43.0, kNoPP);
   __ LoadDImmediate(V1, 42.0, kNoPP);
   __ movz(R2, 10, 0);
   __ sub(SP, SP, Operand(10*kWordSize));
   // Store V1 into SP + R2 * kWordSize.
   __ fstrd(V1, Address(SP, R2, UXTX, Address::Scaled));
   __ fldrd(V0, Address(SP, R2, UXTX, Address::Scaled));
   __ add(SP, SP, Operand(10*kWordSize));
   __ ret();
 }
@@ skipping 442 matching lines @@
 }
 
 
 ASSEMBLER_TEST_RUN(Vdivd, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(2.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(Vdupd, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V0, 21.0, kNoPP);
   __ vdupd(V1, V0, 0);
 
   const int dword_bytes = 1 << Log2OperandSizeBytes(kDWord);
   const int qword_bytes = 1 << Log2OperandSizeBytes(kQWord);
   __ fstrq(V1, Address(SP, -1 * qword_bytes, Address::PreIndex));
 
   __ fldrd(V2, Address(SP, 1 * dword_bytes, Address::PostIndex));
   __ fldrd(V3, Address(SP, 1 * dword_bytes, Address::PostIndex));
 
   __ faddd(V0, V2, V3);
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(Vdupd, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(Vdups, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V0, 21.0, kNoPP);
   __ fcvtsd(V0, V0);
   __ vdups(V1, V0, 0);
 
   const int sword_bytes = 1 << Log2OperandSizeBytes(kSWord);
   const int qword_bytes = 1 << Log2OperandSizeBytes(kQWord);
   __ fstrq(V1, Address(SP, -1 * qword_bytes, Address::PreIndex));
 
   __ fldrs(V3, Address(SP, 1 * sword_bytes, Address::PostIndex));
   __ fldrs(V2, Address(SP, 1 * sword_bytes, Address::PostIndex));
@@ skipping 12 matching lines @@
 }
 
 
 ASSEMBLER_TEST_RUN(Vdups, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(84.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(Vinsd, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V5, 42.0, kNoPP);
   __ vinsd(V1, 1, V5, 0);  // V1[1] <- V0[0].
 
   const int dword_bytes = 1 << Log2OperandSizeBytes(kDWord);
   const int qword_bytes = 1 << Log2OperandSizeBytes(kQWord);
   __ fstrq(V1, Address(SP, -1 * qword_bytes, Address::PreIndex));
 
   __ fldrd(V2, Address(SP, 1 * dword_bytes, Address::PostIndex));
   __ fldrd(V3, Address(SP, 1 * dword_bytes, Address::PostIndex));
 
   __ fmovdd(V0, V3);
   __ ret();
 }
 
 
 ASSEMBLER_TEST_RUN(Vinsd, test) {
   typedef double (*DoubleReturn)();
   EXPECT_EQ(42.0, EXECUTE_TEST_CODE_DOUBLE(DoubleReturn, test->entry()));
 }
 
 
 ASSEMBLER_TEST_GENERATE(Vinss, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ LoadDImmediate(V0, 21.0, kNoPP);
   __ fcvtsd(V0, V0);
   __ vinss(V1, 3, V0, 0);
   __ vinss(V1, 1, V0, 0);
 
   const int sword_bytes = 1 << Log2OperandSizeBytes(kSWord);
   const int qword_bytes = 1 << Log2OperandSizeBytes(kQWord);
   __ fstrq(V1, Address(SP, -1 * qword_bytes, Address::PreIndex));
 
   __ fldrs(V3, Address(SP, 1 * sword_bytes, Address::PostIndex));
@@ skipping 790 matching lines @@
   EXPECT_FLOAT_EQ(1.0/sqrt(147000.0), res, 0.0001);
 }
 
 
 // Called from assembler_test.cc.
 // LR: return address.
 // R0: context.
 // R1: value.
 // R2: growable array.
 ASSEMBLER_TEST_GENERATE(StoreIntoObject, assembler) {
-  __ mov(SP, CSP);
+  __ SetupDartSP(kTestStackSpace);
   __ TagAndPushPP();
   __ LoadPoolPointer(PP);
   __ Push(CTX);
   __ Push(LR);
   __ mov(CTX, R0);
   __ StoreIntoObject(R2,
                      FieldAddress(R2, GrowableObjectArray::data_offset()),
                      R1);
   __ Pop(LR);
   __ Pop(CTX);
   __ PopAndUntagPP();
   __ ret();
 }
 
 }  // namespace dart
 
 #endif  // defined(TARGET_ARCH_ARM64)