[VPlan] Add VPInstruction to VPRecipe transformation.
This patch introduces a VPInstructionToVPRecipe transformation, which
allows us to generate code for a VPInstruction based VPlan re-using the
existing infrastructure.
Reviewers: dcaballe, hsaito, mssimpso, hfinkel, rengolin, mkuper, javed.absar, sguggill
Reviewed By: dcaballe
Differential Revision: https://reviews.llvm.org/D46827
llvm-svn: 334969
diff --git a/llvm/lib/Transforms/Vectorize/VPlanHCFGTransforms.h b/llvm/lib/Transforms/Vectorize/VPlanHCFGTransforms.h
new file mode 100644
index 0000000..ae549c6
--- /dev/null
+++ b/llvm/lib/Transforms/Vectorize/VPlanHCFGTransforms.h
@@ -0,0 +1,36 @@
+//===- VPlanHCFGTransforms.h - Utility VPlan to VPlan transforms ----------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// This file provides utility VPlan to VPlan transformations.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_VECTORIZE_VPLANHCFGTRANSFORMS_H
+#define LLVM_TRANSFORMS_VECTORIZE_VPLANHCFGTRANSFORMS_H
+
+#include "VPlan.h"
+#include "llvm/IR/Instruction.h"
+#include "llvm/Transforms/Vectorize/LoopVectorizationLegality.h"
+
+namespace llvm {
+
+class VPlanHCFGTransforms {
+
+public:
+ /// Replaces the VPInstructions in \p Plan with corresponding
+ /// widen recipes.
+ static void VPInstructionsToVPRecipes(
+ VPlanPtr &Plan,
+ LoopVectorizationLegality::InductionList *Inductions,
+ SmallPtrSetImpl<Instruction *> &DeadInstructions);
+};
+
+} // namespace llvm
+
+#endif // LLVM_TRANSFORMS_VECTORIZE_VPLANHCFGTRANSFORMS_H
