[cfe-commits] r47771 - /cfe/trunk/AST/CFG.cpp

[Ted Kremenek]

Author: kremenek
Date: Fri Feb 29 16:32:24 2008
New Revision: 47771

URL: http://llvm.org/viewvc/llvm-project?rev=47771&view=rev
Log:
Minor CFG optimization: don't create separate block-level expressions for DeclStmt initializers when the initializer is a literal.

Modified:
    cfe/trunk/AST/CFG.cpp

Modified: cfe/trunk/AST/CFG.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/AST/CFG.cpp?rev=47771&r1=47770&r2=47771&view=diff

==============================================================================
--- cfe/trunk/AST/CFG.cpp (original)
+++ cfe/trunk/AST/CFG.cpp Fri Feb 29 16:32:24 2008
@@ -402,8 +402,21 @@
   Stmt* S = *I;
   ++I;
   WalkAST_VisitDeclSubExprs(I);
+    
+  // Optimization: Don't create separate block-level statements for literals.
+  
+  switch (S->getStmtClass()) {
+    case Stmt::IntegerLiteralClass:
+    case Stmt::CharacterLiteralClass:
+    case Stmt::StringLiteralClass:
+      break;
+      
+      // All other cases.
+      
+    default:
+      Block = addStmt(S);
+  }
   
-  Block = addStmt(S);
   return Block;
 }