LoopVectorize: support vectorizing intrinsic calls

- added function to VectorTargetTransformInfo to query cost of intrinsics
- vectorize trivially vectorizable intrinsic calls such as sin, cos, log, etc.

Reviewed by: Nadav


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169711 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 11 insertions, 0 deletions

diff --git a/include/llvm/Target/TargetTransformImpl.h b/include/llvm/Target/TargetTransformImpl.h
index f4ec97ae93..a94278cfa3 100644
--- a/include/llvm/Target/TargetTransformImpl.h
+++ b/include/llvm/Target/TargetTransformImpl.h
@@ -90,6 +90,9 @@ public:
                                    unsigned Alignment,
                                    unsigned AddressSpace) const;
 
+  virtual unsigned getIntrinsicInstrCost(Intrinsic::ID, Type *RetTy,
+                                         ArrayRef<Type*> Tys) const;
+
   virtual unsigned getNumberOfParts(Type *Tp) const;
 };
 
diff --git a/include/llvm/TargetTransformInfo.h b/include/llvm/TargetTransformInfo.h
index a18cef6d01..519ccb9263 100644
--- a/include/llvm/TargetTransformInfo.h
+++ b/include/llvm/TargetTransformInfo.h
@@ -23,6 +23,7 @@
 #define LLVM_TRANSFORMS_TARGET_TRANSFORM_INTERFACE
 
 #include "llvm/AddressingMode.h"
+#include "llvm/Intrinsics.h"
 #include "llvm/Pass.h"
 #include "llvm/Support/DataTypes.h"
 #include "llvm/Type.h"
@@ -209,6 +210,13 @@ public:
     return 1;
   }
 
+  /// Returns the cost of Intrinsic instructions.
+  virtual unsigned getIntrinsicInstrCost(Intrinsic::ID,
+                                         Type *RetTy,
+                                         ArrayRef<Type*> Tys) const {
+    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 {