Added first support for tracking locations of expressions in the...

src/arm/fast-codegen-arm.cc

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 87 matching lines @@
     int num_parameters = function_->scope()->num_parameters();
     __ add(sp, sp, Operand((num_parameters + 1) * kPointerSize));
     __ Jump(lr);
   }
 }
 
 
 void FastCodeGenerator::VisitExpressionStatement(ExpressionStatement* stmt) {
   Comment cmnt(masm_, "[ ExpressionStatement");
   Visit(stmt->expression());
-  __ pop();
 }
 
 
 void FastCodeGenerator::VisitReturnStatement(ReturnStatement* stmt) {
   Comment cmnt(masm_, "[ ReturnStatement");
   Visit(stmt->expression());
   __ pop(r0);
   __ RecordJSReturn();
   __ mov(sp, fp);
   __ ldm(ia_w, sp, fp.bit() | lr.bit());
     int num_parameters = function_->scope()->num_parameters();
   __ add(sp, sp, Operand((num_parameters + 1) * kPointerSize));
   __ Jump(lr);
 }
 
 
 void FastCodeGenerator::VisitSlot(Slot* expr) {
   Comment cmnt(masm_, "[ Slot");
-  __ ldr(ip, MemOperand(fp, SlotOffset(expr)));
-  __ push(ip);
+  if (expr->location().is_temporary()) {
+    __ ldr(ip, MemOperand(fp, SlotOffset(expr)));
+    __ push(ip);
+  } else {
+    ASSERT(expr->location().is_nowhere());
+  }
 }
 
 
 void FastCodeGenerator::VisitLiteral(Literal* expr) {
   Comment cmnt(masm_, "[ Literal");
-  __ mov(ip, Operand(expr->handle()));
-  __ push(ip);
+  if (expr->location().is_temporary()) {
+    __ mov(ip, Operand(expr->handle()));
+    __ push(ip);
+  } else {
+    ASSERT(expr->location().is_nowhere());
+  }
 }
 
 
 void FastCodeGenerator::VisitAssignment(Assignment* expr) {
   Comment cmnt(masm_, "[ Assignment");
   ASSERT(expr->op() == Token::ASSIGN || expr->op() == Token::INIT_VAR);
 
   Visit(expr->value());
 
   Variable* var = expr->target()->AsVariableProxy()->AsVariable();
   ASSERT(var != NULL && var->slot() != NULL);
-  __ ldr(ip, MemOperand(sp));
+
+  if (expr->location().is_temporary()) {
+    __ ldr(ip, MemOperand(sp));
+  } else {
+    ASSERT(expr->location().is_nowhere());
+    __ pop(ip);
+  }
   __ str(ip, MemOperand(fp, SlotOffset(var->slot())));
 }
 
 
 } }  // namespace v8::internal