[polly] r231326 - Add missing forward declaration [NFC]

[Johannes Doerfert]

Author: jdoerfert
Date: Wed Mar  4 18:40:07 2015
New Revision: 231326

URL: http://llvm.org/viewvc/llvm-project?rev=231326&view=rev
Log:
Add missing forward declaration [NFC]

Modified:
    polly/trunk/include/polly/CodeGen/IslAst.h

Modified: polly/trunk/include/polly/CodeGen/IslAst.h
URL: http://llvm.org/viewvc/llvm-project/polly/trunk/include/polly/CodeGen/IslAst.h?rev=231326&r1=231325&r2=231326&view=diff
==============================================================================
--- polly/trunk/include/polly/CodeGen/IslAst.h (original)
+++ polly/trunk/include/polly/CodeGen/IslAst.h Wed Mar  4 18:40:07 2015
@@ -31,6 +31,7 @@ namespace llvm {
 class raw_ostream;
 }
 
+struct isl_pw_aff;
 struct isl_ast_node;
 struct isl_ast_expr;
 struct isl_ast_build;