Imported Upstream version 6.0.0.172

Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd

external/llvm/lib/Transforms/Vectorize/VPlanBuilder.h

@@ -0,0 +1,61 @@
+//===- VPlanBuilder.h - A VPlan utility for constructing VPInstructions ---===//
+//
+//                     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 a VPlan-based builder utility analogous to IRBuilder.
+/// It provides an instruction-level API for generating VPInstructions while
+/// abstracting away the Recipe manipulation details.
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TRANSFORMS_VECTORIZE_VPLAN_BUILDER_H
+#define LLVM_TRANSFORMS_VECTORIZE_VPLAN_BUILDER_H
+
+#include "VPlan.h"
+
+namespace llvm {
+
+class VPBuilder {
+private:
+  VPBasicBlock *BB = nullptr;
+  VPBasicBlock::iterator InsertPt = VPBasicBlock::iterator();
+
+  VPInstruction *createInstruction(unsigned Opcode,
+                                   std::initializer_list<VPValue *> Operands) {
+    VPInstruction *Instr = new VPInstruction(Opcode, Operands);
+    BB->insert(Instr, InsertPt);
+    return Instr;
+  }
+
+public:
+  VPBuilder() {}
+
+  /// \brief This specifies that created VPInstructions should be appended to
+  /// the end of the specified block.
+  void setInsertPoint(VPBasicBlock *TheBB) {
+    assert(TheBB && "Attempting to set a null insert point");
+    BB = TheBB;
+    InsertPt = BB->end();
+  }
+
+  VPValue *createNot(VPValue *Operand) {
+    return createInstruction(VPInstruction::Not, {Operand});
+  }
+
+  VPValue *createAnd(VPValue *LHS, VPValue *RHS) {
+    return createInstruction(Instruction::BinaryOps::And, {LHS, RHS});
+  }
+
+  VPValue *createOr(VPValue *LHS, VPValue *RHS) {
+    return createInstruction(Instruction::BinaryOps::Or, {LHS, RHS});
+  }
+};
+
+} // namespace llvm
+
+#endif // LLVM_TRANSFORMS_VECTORIZE_VPLAN_BUILDER_H