mlir/lib/Interfaces/CallInterfaces.cpp

   1 //===- CallInterfaces.cpp - ControlFlow Interfaces ------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "mlir/Interfaces/CallInterfaces.h"
  10
  11 using namespace mlir;
  12
  13 //===----------------------------------------------------------------------===//
  14 // CallOpInterface
  15 //===----------------------------------------------------------------------===//
  16
  17 /// Resolve the callable operation for given callee to a CallableOpInterface, or
  18 /// nullptr if a valid callable was not resolved. `symbolTable` is an optional
  19 /// parameter that will allow for using a cached symbol table for symbol lookups
  20 /// instead of performing an O(N) scan.
  21 Operation *
  22 CallOpInterface::resolveCallable(SymbolTableCollection *symbolTable) {
  23   CallInterfaceCallable callable = getCallableForCallee();
  24   if (auto symbolVal = dyn_cast<Value>(callable))
  25     return symbolVal.getDefiningOp();
  26
  27   // If the callable isn't a value, lookup the symbol reference.
  28   auto symbolRef = callable.get<SymbolRefAttr>();
  29   if (symbolTable)
  30     return symbolTable->lookupNearestSymbolFrom(getOperation(), symbolRef);
  31   return SymbolTable::lookupNearestSymbolFrom(getOperation(), symbolRef);
  32 }
  33
  34 //===----------------------------------------------------------------------===//
  35 // CallInterfaces
  36 //===----------------------------------------------------------------------===//
  37
  38 #include "mlir/Interfaces/CallInterfaces.cpp.inc"