[llvm-commits] [llvm] r83760 - /llvm/trunk/include/llvm/Support/PatternMatch.h

[Chris Lattner]

Author: lattner
Date: Sun Oct 11 02:51:25 2009
New Revision: 83760

URL: http://llvm.org/viewvc/llvm-project?rev=83760&view=rev
Log:
add a helper for matching "1".

Modified:
    llvm/trunk/include/llvm/Support/PatternMatch.h

Modified: llvm/trunk/include/llvm/Support/PatternMatch.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Support/PatternMatch.h?rev=83760&r1=83759&r2=83760&view=diff

==============================================================================
--- llvm/trunk/include/llvm/Support/PatternMatch.h (original)
+++ llvm/trunk/include/llvm/Support/PatternMatch.h Sun Oct 11 02:51:25 2009
@@ -87,6 +87,18 @@
 /// m_Zero() - Match an arbitrary zero/null constant.
 inline zero_ty m_Zero() { return zero_ty(); }
 
+struct one_ty {
+  template<typename ITy>
+  bool match(ITy *V) {
+    if (const ConstantInt *C = dyn_cast<ConstantInt>(V))
+      return C->isOne();
+    return false;
+  }
+};
+
+/// m_One() - Match a an integer 1.
+inline one_ty m_One() { return one_ty(); }
+  
 
 template<typename Class>
 struct bind_ty {