MIPS: This is a preview of a first step towards unification of the hydrogen call machinery.

src/mips/lithium-codegen-mips.cc

Index: src/mips/lithium-codegen-mips.cc
diff --git a/src/mips/lithium-codegen-mips.cc b/src/mips/lithium-codegen-mips.cc
index d54e5ec1518b34c63fe9159f1d3f033b148bf6f8..0fb0cca7e2e3e61bdfec7d4ca918ab75aa8115ce 100644
--- a/src/mips/lithium-codegen-mips.cc
+++ b/src/mips/lithium-codegen-mips.cc
@@ -3549,17 +3549,6 @@ void LCodeGen::CallKnownFunction(Handle<JSFunction> function,
 }
 
 
-void LCodeGen::DoCallConstantFunction(LCallConstantFunction* instr) {
-  ASSERT(ToRegister(instr->result()).is(v0));
-  __ mov(a0, v0);
-  CallKnownFunction(instr->hydrogen()->function(),
-                    instr->hydrogen()->formal_parameter_count(),
-                    instr->arity(),
-                    instr,
-                    A1_UNINITIALIZED);
-}
-
-
 void LCodeGen::DoDeferredMathAbsTaggedHeapNumber(LMathAbs* instr) {
   ASSERT(instr->context() != NULL);
   ASSERT(ToRegister(instr->context()).is(cp));
@@ -3889,25 +3878,44 @@ void LCodeGen::DoInvokeFunction(LInvokeFunction* instr) {
 }
 
 
-void LCodeGen::DoCallKeyed(LCallKeyed* instr) {
-  ASSERT(ToRegister(instr->context()).is(cp));
+void LCodeGen::DoCallWithDescriptor(LCallWithDescriptor* instr) {
   ASSERT(ToRegister(instr->result()).is(v0));
 
-  int arity = instr->arity();
-  Handle<Code> ic =
-      isolate()->stub_cache()->ComputeKeyedCallInitialize(arity);
-  CallCode(ic, RelocInfo::CODE_TARGET, instr);
+  LPointerMap* pointers = instr->pointer_map();
+  SafepointGenerator generator(this, pointers, Safepoint::kLazyDeopt);
+
+  if (instr->target()->IsConstantOperand()) {
+    LConstantOperand* target = LConstantOperand::cast(instr->target());
+    Handle<Code> code = Handle<Code>::cast(ToHandle(target));
+    generator.BeforeCall(__ CallSize(code, RelocInfo::CODE_TARGET));
+    __ Call(code, RelocInfo::CODE_TARGET);
+  } else {
+    ASSERT(instr->target()->IsRegister());
+    Register target = ToRegister(instr->target());
+    generator.BeforeCall(__ CallSize(target));
+    __ Addu(target, target, Operand(Code::kHeaderSize - kHeapObjectTag));
+    __ Call(target);
+  }
+  generator.AfterCall();
 }
 
 
-void LCodeGen::DoCallNamed(LCallNamed* instr) {
-  ASSERT(ToRegister(instr->context()).is(cp));
+void LCodeGen::DoCallJSFunction(LCallJSFunction* instr) {
+  ASSERT(ToRegister(instr->function()).is(a1));
   ASSERT(ToRegister(instr->result()).is(v0));
 
-  int arity = instr->arity();
-  Handle<Code> ic = isolate()->stub_cache()->ComputeCallInitialize(arity);
-  __ li(a2, Operand(instr->name()));
-  CallCode(ic, RelocInfo::CODE_TARGET, instr);
+  if (instr->hydrogen()->pass_argument_count()) {
+    __ li(a0, Operand(instr->arity()));
+  }
+
+  // Change context.
+  __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
+
+  // Load the code entry address
+  __ lw(at, FieldMemOperand(a1, JSFunction::kCodeEntryOffset));
+  __ Call(at);
+
+  RecordSafepointWithLazyDeopt(instr, RECORD_SIMPLE_SAFEPOINT);
 }
 
 
@@ -3927,16 +3935,6 @@ void LCodeGen::DoCallFunction(LCallFunction* instr) {
 }
 
 
-void LCodeGen::DoCallKnownGlobal(LCallKnownGlobal* instr) {
-  ASSERT(ToRegister(instr->result()).is(v0));
-  CallKnownFunction(instr->hydrogen()->target(),
-                    instr->hydrogen()->formal_parameter_count(),
-                    instr->arity(),
-                    instr,
-                    A1_UNINITIALIZED);
-}
-
-
 void LCodeGen::DoCallNew(LCallNew* instr) {
   ASSERT(ToRegister(instr->context()).is(cp));
   ASSERT(ToRegister(instr->constructor()).is(a1));