Vector ICs: debugger should save registers for vector store ics.

src/mips/debug-mips.cc

Index: src/mips/debug-mips.cc
diff --git a/src/mips/debug-mips.cc b/src/mips/debug-mips.cc
index 81e69ed1b0eb7ac18ed1973d56edfdc89131d563..eeb6377f6440af9621374ca680d0f9c41b77283e 100644
--- a/src/mips/debug-mips.cc
+++ b/src/mips/debug-mips.cc
@@ -164,8 +164,11 @@ void DebugCodegen::GenerateStoreICDebugBreak(MacroAssembler* masm) {
   Register receiver = StoreDescriptor::ReceiverRegister();
   Register name = StoreDescriptor::NameRegister();
   Register value = StoreDescriptor::ValueRegister();
-  Generate_DebugBreakCallHelper(
-      masm, receiver.bit() | name.bit() | value.bit(), 0);
+  RegList regs = receiver.bit() | name.bit() | value.bit();
+  if (FLAG_vector_stores) {
+    regs |= VectorStoreICDescriptor::SlotRegister().bit();
+  }
+  Generate_DebugBreakCallHelper(masm, regs, 0);
 }
 
 
@@ -177,11 +180,7 @@ void DebugCodegen::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) {
 
 void DebugCodegen::GenerateKeyedStoreICDebugBreak(MacroAssembler* masm) {
   // Calling convention for IC keyed store call (from ic-mips.cc).
-  Register receiver = StoreDescriptor::ReceiverRegister();
-  Register name = StoreDescriptor::NameRegister();
-  Register value = StoreDescriptor::ValueRegister();
-  Generate_DebugBreakCallHelper(
-      masm, receiver.bit() | name.bit() | value.bit(), 0);
+  GenerateStoreICDebugBreak(masm);
 }