[llvm-commits] [llvm] r166751 - in /llvm/trunk: include/llvm/Target/TargetTransformImpl.h include/llvm/TargetTransformInfo.h lib/Target/TargetTransformImpl.cpp

[Hal Finkel]

Author: hfinkel
Date: Thu Oct 25 23:28:02 2012
New Revision: 166751

URL: http://llvm.org/viewvc/llvm-project?rev=166751&view=rev
Log:
Add VectorTargetTransform::getNumberOfParts.

As discussed on IRC, add VectorTargetTransform::getNumberOfParts
to provide a stable interface to the vector legalization splitting factor.

Modified:
    llvm/trunk/include/llvm/Target/TargetTransformImpl.h
    llvm/trunk/include/llvm/TargetTransformInfo.h
    llvm/trunk/lib/Target/TargetTransformImpl.cpp

Modified: llvm/trunk/include/llvm/Target/TargetTransformImpl.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetTransformImpl.h?rev=166751&r1=166750&r2=166751&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Target/TargetTransformImpl.h (original)
+++ llvm/trunk/include/llvm/Target/TargetTransformImpl.h Thu Oct 25 23:28:02 2012
@@ -68,6 +68,8 @@
   virtual unsigned getMemoryOpCost(unsigned Opcode, Type *Src,
                                    unsigned Alignment,
                                    unsigned AddressSpace) const;
+
+  virtual unsigned getNumberOfParts(Type *Tp) const;
 };
 
 } // end llvm namespace

Modified: llvm/trunk/include/llvm/TargetTransformInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/TargetTransformInfo.h?rev=166751&r1=166750&r2=166751&view=diff
==============================================================================
--- llvm/trunk/include/llvm/TargetTransformInfo.h (original)
+++ llvm/trunk/include/llvm/TargetTransformInfo.h Thu Oct 25 23:28:02 2012
@@ -156,6 +156,11 @@
     return 1;
   }
 
+  /// Returns the number of pieces into which the provided type must be
+  /// split during legalization. Zero is returned when the answer is unknown.
+  virtual unsigned getNumberOfParts(Type *Tp) const {
+    return 0;
+  }
 };
 
 } // End llvm namespace

Modified: llvm/trunk/lib/Target/TargetTransformImpl.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/TargetTransformImpl.cpp?rev=166751&r1=166750&r2=166751&view=diff
==============================================================================
--- llvm/trunk/lib/Target/TargetTransformImpl.cpp (original)
+++ llvm/trunk/lib/Target/TargetTransformImpl.cpp Thu Oct 25 23:28:02 2012
@@ -196,3 +196,11 @@
   // Assume that all loads of legal types cost 1.
   return LT.first;
 }
+
+unsigned
+VectorTargetTransformImpl::getNumberOfParts(Type *Tp) const {
+  std::pair<unsigned, EVT>  LT =
+  getTypeLegalizationCost(Tp->getContext(), TLI->getValueType(Tp));
+  return LT.first;
+}
+