1 files changed, 38 insertions, 0 deletions
diff --git a/llvm/lib/Target/SPIRV/SPIRVCombinerHelper.h b/llvm/lib/Target/SPIRV/SPIRVCombinerHelper.h
new file mode 100644
index 0000000..0b39d34
--- /dev/null
+++ b/llvm/lib/Target/SPIRV/SPIRVCombinerHelper.h
@@ -0,0 +1,38 @@
+//===-- SPIRVCombinerHelper.h -----------------------------------*- C++ -*-===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+///
+/// This contains common combine transformations that may be used in a combine
+/// pass.
+///
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_TARGET_SPIRV_SPIRVCOMBINERHELPER_H
+#define LLVM_LIB_TARGET_SPIRV_SPIRVCOMBINERHELPER_H
+
+#include "SPIRVSubtarget.h"
+#include "llvm/CodeGen/GlobalISel/CombinerHelper.h"
+
+namespace llvm {
+class SPIRVCombinerHelper : public CombinerHelper {
+protected:
+  const SPIRVSubtarget &STI;
+
+public:
+  using CombinerHelper::CombinerHelper;
+  SPIRVCombinerHelper(GISelChangeObserver &Observer, MachineIRBuilder &B,
+                      bool IsPreLegalize, GISelValueTracking *VT,
+                      MachineDominatorTree *MDT, const LegalizerInfo *LI,
+                      const SPIRVSubtarget &STI);
+
+  bool matchLengthToDistance(MachineInstr &MI) const;
+  void applySPIRVDistance(MachineInstr &MI) const;
+};
+
+} // end namespace llvm
+
+#endif // LLVM_LIB_TARGET_SPIRV_SPIRVCOMBINERHELPER_H