Vector ICs: platform support for vector-based stores.

src/ic/ia32/handler-compiler-ia32.cc

Index: src/ic/ia32/handler-compiler-ia32.cc
diff --git a/src/ic/ia32/handler-compiler-ia32.cc b/src/ic/ia32/handler-compiler-ia32.cc
index 5845abf00f52347885c2f200fcfa8cffbfebd2f2..1d019092c7b91812cda2ad26c38e9f86d2625d18 100644
--- a/src/ic/ia32/handler-compiler-ia32.cc
+++ b/src/ic/ia32/handler-compiler-ia32.cc
@@ -304,13 +304,24 @@ static void StoreIC_PushArgs(MacroAssembler* masm) {
   Register name = StoreDescriptor::NameRegister();
   Register value = StoreDescriptor::ValueRegister();
 
-  DCHECK(!ebx.is(receiver) && !ebx.is(name) && !ebx.is(value));
-
-  __ pop(ebx);
-  __ push(receiver);
-  __ push(name);
-  __ push(value);
-  __ push(ebx);
+  if (FLAG_vector_stores) {
+    Register slot = VectorStoreICDescriptor::SlotRegister();
+    Register vector = VectorStoreICDescriptor::VectorRegister();
+
+    __ xchg(receiver, Operand(esp, 0));
+    __ push(name);
+    __ push(value);
+    __ push(slot);
+    __ push(vector);
+    __ push(receiver);  // which contains the return address.
+  } else {
+    DCHECK(!ebx.is(receiver) && !ebx.is(name) && !ebx.is(value));
+    __ pop(ebx);
+    __ push(receiver);
+    __ push(name);
+    __ push(value);
+    __ push(ebx);
+  }
 }
 
 
@@ -319,7 +330,7 @@ void NamedStoreHandlerCompiler::GenerateSlow(MacroAssembler* masm) {
   StoreIC_PushArgs(masm);
 
   // Do tail-call to runtime routine.
-  __ TailCallRuntime(Runtime::kStoreIC_Slow, 3, 1);
+  __ TailCallRuntime(Runtime::kStoreIC_Slow, FLAG_vector_stores ? 5 : 3, 1);
 }
 
 
@@ -328,7 +339,8 @@ void ElementHandlerCompiler::GenerateStoreSlow(MacroAssembler* masm) {
   StoreIC_PushArgs(masm);
 
   // Do tail-call to runtime routine.
-  __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow, 3, 1);
+  __ TailCallRuntime(Runtime::kKeyedStoreIC_Slow, FLAG_vector_stores ? 5 : 3,
+                     1);
 }
 
 
@@ -352,10 +364,16 @@ void NamedStoreHandlerCompiler::GenerateRestoreName(Handle<Name> name) {
 
 void NamedStoreHandlerCompiler::GeneratePushMap(Register map_reg,
                                                 Register scratch) {
-  // Get the return address, push the argument and then continue.
-  __ pop(scratch);
+  //       current               after GeneratePushMap
+  // -------------------------------------------------
+  //       ret addr              slot
+  //       vector                vector
+  // sp -> slot                  map
+  //                       sp -> ret addr
+  //
+  __ xchg(map_reg, Operand(esp, 0));
+  __ xchg(map_reg, Operand(esp, 2 * kPointerSize));
   __ push(map_reg);
-  __ push(scratch);
 }
 
 
@@ -575,6 +593,7 @@ void NamedStoreHandlerCompiler::FrontendFooter(Handle<Name> name, Label* miss) {
     Label success;
     __ jmp(&success);
     GenerateRestoreName(miss, name);
+    if (IC::ICUseVector(kind())) PopVectorAndSlot();
     TailCallBuiltin(masm(), MissBuiltin(kind()));
     __ bind(&success);
   }