[llvm-commits] [PATCH] Add DenseMap::lookup

[Daniel Dunbar]

The attached patch adds DenseMap::lookup:
+  /// lookup - Return the entry for the specified key, or a default
+  /// value if no such entry exists.

This is useful for situations where you just want to get an entry from
the DenseMap if it exists. Code like:
--
  llvm::Function *Fn = MethodDefinitions[MD];
  if (!Fn)
    return 0;
--
is succinct but is wastefully adding entries into MethodDefinitions.

 - Daniel
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