ARM: Implement DoDivI in the lithium code generator.

src/arm/macro-assembler-arm.cc

Index: src/arm/macro-assembler-arm.cc
diff --git a/src/arm/macro-assembler-arm.cc b/src/arm/macro-assembler-arm.cc
index 21146234a1725d790437baf0dc08b4dfa3b359c7..1028b0e69f3e8dbba88fee6e7ac635a0c6ff954b 100644
--- a/src/arm/macro-assembler-arm.cc
+++ b/src/arm/macro-assembler-arm.cc
@@ -466,6 +466,25 @@ void MacroAssembler::PopSafepointRegisters() {
 }
 
 
+void MacroAssembler::PushSafepointRegistersAndDoubles() {
+  PushSafepointRegisters();
+  sub(sp, sp, Operand(DwVfpRegister::kNumAllocatableRegisters *
+                      kDoubleSize));
+  for (int i = 0; i < DwVfpRegister::kNumAllocatableRegisters; i++) {
+    vstr(DwVfpRegister::FromAllocationIndex(i), sp, i * kDoubleSize);
+  }
+}
+
+
+void MacroAssembler::PopSafepointRegistersAndDoubles() {
+  for (int i = 0; i < DwVfpRegister::kNumAllocatableRegisters; i++) {
+    vldr(DwVfpRegister::FromAllocationIndex(i), sp, i * kDoubleSize);
+  }
+  add(sp, sp, Operand(DwVfpRegister::kNumAllocatableRegisters *
+                      kDoubleSize));
+  PopSafepointRegisters();
+}
+
 int MacroAssembler::SafepointRegisterStackIndex(int reg_code) {
   // The registers are pushed starting with the highest encoding,
   // which means that lowest encodings are closest to the stack pointer.