ARM/ARM64: Fix smashed CODE_REG in intrinsics with InvokeMathCFunctionInstrs.

runtime/vm/intermediate_language_x64.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"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/compiler.h"
@@ skipping 5168 matching lines @@
   // Calling convention on x64 uses XMM0 and XMM1 to pass the first two
   // double arguments and XMM0 to return the result. Unfortunately
   // currently we can't specify these registers because ParallelMoveResolver
   // assumes that XMM0 is free at all times.
   // TODO(vegorov): allow XMM0 to be used.
   ASSERT((InputCount() == 1) || (InputCount() == 2));
   const intptr_t kNumTemps =
       (recognized_kind() == MethodRecognizer::kMathDoublePow) ? 3 : 1;
   LocationSummary* result = new(zone) LocationSummary(
       zone, InputCount(), kNumTemps, LocationSummary::kCall);
+  ASSERT(R13 != CALLEE_SAVED_TEMP);
+  ASSERT(((1 << R13) & CallingConventions::kCalleeSaveCpuRegisters) != 0);
   result->set_temp(0, Location::RegisterLocation(R13));
   result->set_in(0, Location::FpuRegisterLocation(XMM2));
   if (InputCount() == 2) {
     result->set_in(1, Location::FpuRegisterLocation(XMM1));
   }
   if (recognized_kind() == MethodRecognizer::kMathDoublePow) {
     // Temp index 1.
     result->set_temp(1, Location::RegisterLocation(RAX));
     // Temp index 2.
     result->set_temp(2, Location::FpuRegisterLocation(XMM4));
@@ skipping 1357 matching lines @@
   __ Drop(1);
   __ popq(result);
 }
 
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64