Mauri Mustonen 0de8aeae72
[VPlan] Support to widen select intructions in VPlan native path
Add support to widen select instructions in VPlan native path by using a correct recipe when such instructions are encountered. This is already used by inner loop vectorizer.

Previously select instructions get handled by the wrong recipe and resulted in unreachable instruction errors like this one: https://bugs.llvm.org/show_bug.cgi?id=48139.

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D97136
2021-03-10 20:59:53 +00:00

34 lines
1.1 KiB
C++

//===- VPlanTransforms.h - Utility VPlan to VPlan transforms --------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file provides utility VPlan to VPlan transformations.
//===----------------------------------------------------------------------===//
#ifndef LLVM_TRANSFORMS_VECTORIZE_VPLANTRANSFORMS_H
#define LLVM_TRANSFORMS_VECTORIZE_VPLANTRANSFORMS_H
#include "VPlan.h"
#include "llvm/IR/Instruction.h"
#include "llvm/Transforms/Vectorize/LoopVectorizationLegality.h"
namespace llvm {
struct VPlanTransforms {
/// Replaces the VPInstructions in \p Plan with corresponding
/// widen recipes.
static void VPInstructionsToVPRecipes(
Loop *OrigLoop, VPlanPtr &Plan,
LoopVectorizationLegality::InductionList &Inductions,
SmallPtrSetImpl<Instruction *> &DeadInstructions, ScalarEvolution &SE);
};
} // namespace llvm
#endif // LLVM_TRANSFORMS_VECTORIZE_VPLANTRANSFORMS_H