Fix trigonometric intrinsics: if allocation fails remember to release the loaded value on FPU stack.

runtime/vm/assembler_ia32.cc

 // Copyright (c) 2011, 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_IA32)
 
 #include "vm/assembler.h"
 #include "vm/heap.h"
 #include "vm/memory_region.h"
@@ skipping 697 matching lines @@
 }
 
 
 void Assembler::fincstp() {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xD9);
   EmitUint8(0xF7);
 }
 
 
-void Assembler::ffree(const Immediate& index) {
-  ASSERT(index.value() < 7);
+void Assembler::ffree(intptr_t value) {
+  ASSERT(value < 7);
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xDD);
-  EmitUint8(0xC0 + index.value());
+  EmitUint8(0xC0 + value);
 }
 
 
 void Assembler::fsin() {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   EmitUint8(0xD9);
   EmitUint8(0xFE);
 }
 
 
@@ skipping 827 matching lines @@
                                  Register shifter) {
   AssemblerBuffer::EnsureCapacity ensured(&buffer_);
   ASSERT(shifter == ECX);
   EmitUint8(0xD3);
   EmitOperand(rm, Operand(operand));
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32