[llvm] r228322 - [CodeGen] Add isLoadExtLegalOrCustom helper to TargetLowering.

[Ahmed Bougacha]

Author: ab
Date: Thu Feb  5 12:15:59 2015
New Revision: 228322

URL: http://llvm.org/viewvc/llvm-project?rev=228322&view=rev
Log:
[CodeGen] Add isLoadExtLegalOrCustom helper to TargetLowering.

Modified:
    llvm/trunk/include/llvm/Target/TargetLowering.h

Modified: llvm/trunk/include/llvm/Target/TargetLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetLowering.h?rev=228322&r1=228321&r2=228322&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Target/TargetLowering.h (original)
+++ llvm/trunk/include/llvm/Target/TargetLowering.h Thu Feb  5 12:15:59 2015
@@ -574,6 +574,14 @@ public:
       getLoadExtAction(ExtType, ValVT, MemVT) == Legal;
   }
 
+  /// Return true if the specified load with extension is legal or custom
+  /// on this target.
+  bool isLoadExtLegalOrCustom(unsigned ExtType, EVT ValVT, EVT MemVT) const {
+    return ValVT.isSimple() && MemVT.isSimple() &&
+      (getLoadExtAction(ExtType, ValVT, MemVT) == Legal ||
+       getLoadExtAction(ExtType, ValVT, MemVT) == Custom);
+  }
+
   /// Return how this store with truncation should be treated: either it is
   /// legal, needs to be promoted to a larger size, needs to be expanded to some
   /// other code sequence, or the target has a custom expander for it.