Support immediate and memory operands for PushArgumentInstr in optimized code.

runtime/vm/intermediate_language_x64.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 13 matching lines @@
 
 // Generic summary for call instructions that have all arguments pushed
 // on the stack and return the result in a fixed register RAX.
 LocationSummary* Instruction::MakeCallSummary() {
   LocationSummary* result = new LocationSummary(0, 0, LocationSummary::kCall);
   result->set_out(Location::RegisterLocation(RAX));
   return result;
 }
 
 
+LocationSummary* PushArgumentInstr::MakeLocationSummary() const {
+  const intptr_t kNumInputs = 1;
+  const intptr_t kNumTemps= 0;
+  LocationSummary* locs =
+      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+  locs->set_in(0, Location::AnyOrConstant(value()));
+  return locs;
+}
+
+
+void PushArgumentInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  // In SSA mode, we need an explicit push. Nothing to do in non-SSA mode
+  // where PushArgument is handled by BindInstr::EmitNativeCode.
+  if (compiler->is_optimizing()) {
+    Location value = locs()->in(0);
+    if (value.IsRegister()) {
+      __ pushq(value.reg());
+    } else if (value.IsConstant()) {
+      __ PushObject(value.constant());
+    } else {
+      ASSERT(value.IsStackSlot());
+      __ pushq(value.ToStackSlotAddress());
+    }
+  }
+}
+
+
 LocationSummary* ReturnInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 1;
   const intptr_t kNumTemps = 1;
   LocationSummary* locs =
       new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kCall);
   locs->set_in(0, Location::RegisterLocation(RAX));
   locs->set_temp(0, Location::RegisterLocation(RDX));
   return locs;
 }
 
@@ skipping 2417 matching lines @@
 
 void ShiftMintOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   UNIMPLEMENTED();
 }
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64