Increases the number of ARM floating-point registers.

runtime/vm/stub_code_arm.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_ARM)
 
 #include "vm/assembler.h"
 #include "vm/code_generator.h"
 #include "vm/compiler.h"
@@ skipping 334 matching lines @@
       kFirstLocalSlotFromFp + 1 - (kNumberOfCpuRegisters - R0);
   // Result in R0 is preserved as part of pushing all registers below.
 
   // TODO(regis): Should we align the stack before pushing the fpu registers?
   // If we do, saved_r0_offset_from_fp is not constant anymore.
 
   // Push registers in their enumeration order: lowest register number at
   // lowest address.
   __ PushList(kAllCpuRegistersList);
   ASSERT(kFpuRegisterSize == 4 * kWordSize);
-  __ vstmd(DB_W, SP, D0, static_cast<DRegister>(kNumberOfDRegisters - 1));
+  if (kNumberOfDRegisters > 16) {
+    ASSERT(kNumberOfDRegisters <= 32);
+    __ vstmd(DB_W, SP, D16, static_cast<DRegister>(kNumberOfDRegisters - 1));
+    __ vstmd(DB_W, SP, D0, D15);
+  } else {
+    __ vstmd(DB_W, SP, D0, static_cast<DRegister>(kNumberOfDRegisters - 1));
+  }
 
   __ mov(R0, ShifterOperand(SP));  // Pass address of saved registers block.
   __ ReserveAlignedFrameSpace(0);
   __ CallRuntime(kDeoptimizeCopyFrameRuntimeEntry);
   // Result (R0) is stack-size (FP - SP) in bytes.
 
   if (preserve_result) {
     // Restore result into R1 temporarily.
     __ ldr(R1, Address(FP, saved_result_slot_from_fp * kWordSize));
   }
@@ skipping 1732 matching lines @@
   __ ldr(left, Address(SP, 4 * kWordSize));
   __ ldr(right, Address(SP, 3 * kWordSize));
   GenerateIdenticalWithNumberCheckStub(assembler, left, right, temp);
   __ PopList((1 << R0) | (1 << R1) | (1 << R2));
   __ Ret();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM