SIMD plumbing

runtime/vm/code_generator.cc

Index: runtime/vm/code_generator.cc
diff --git a/runtime/vm/code_generator.cc b/runtime/vm/code_generator.cc
index b1f11df6a68f805e53a64c67ffdb625ada54e2ea..13b53b8b8ccb45128d94b1c2aea23f9d6c804fb6 100644
--- a/runtime/vm/code_generator.cc
+++ b/runtime/vm/code_generator.cc
@@ -1449,11 +1449,13 @@ void DeoptimizeIfOwner(const GrowableArray<intptr_t>& classes) {
 
 // Copy saved registers into the isolate buffer.
 static void CopySavedRegisters(uword saved_registers_address) {
-  double* fpu_registers_copy = new double[kNumberOfFpuRegisters];
+  fpu_register_t* fpu_registers_copy =
+      new fpu_register_t[kNumberOfFpuRegisters];
   ASSERT(fpu_registers_copy != NULL);
   for (intptr_t i = 0; i < kNumberOfFpuRegisters; i++) {
-    fpu_registers_copy[i] = *reinterpret_cast<double*>(saved_registers_address);
-    saved_registers_address += kDoubleSize;
+    fpu_registers_copy[i] =
+        *reinterpret_cast<fpu_register_t*>(saved_registers_address);
+    saved_registers_address += kFpuRegisterSize;
   }
   Isolate::Current()->set_deopt_fpu_registers_copy(fpu_registers_copy);
 
@@ -1505,7 +1507,8 @@ DEFINE_LEAF_RUNTIME_ENTRY(intptr_t, DeoptimizeCopyFrame,
 
   // All registers have been saved below last-fp.
   const uword last_fp = saved_registers_address +
-      kNumberOfCpuRegisters * kWordSize + kNumberOfFpuRegisters * kDoubleSize;
+                        kNumberOfCpuRegisters * kWordSize +
+                        kNumberOfFpuRegisters * kFpuRegisterSize;
   CopySavedRegisters(saved_registers_address);
 
   // Get optimized code and frame that need to be deoptimized.
@@ -1607,7 +1610,7 @@ DEFINE_LEAF_RUNTIME_ENTRY(intptr_t, DeoptimizeFillFrame, uword last_fp) {
 
   intptr_t* frame_copy = isolate->deopt_frame_copy();
   intptr_t* cpu_registers_copy = isolate->deopt_cpu_registers_copy();
-  double* fpu_registers_copy = isolate->deopt_fpu_registers_copy();
+  fpu_register_t* fpu_registers_copy = isolate->deopt_fpu_registers_copy();
 
   intptr_t deopt_reason = kDeoptUnknown;
   const DeoptInfo& deopt_info = DeoptInfo::Handle(