llvm/benchmarks/GetIntrinsicInfoTableEntriesBM.cpp

   1 //===- GetIntrinsicInfoTableEntries.cpp - IIT signature benchmark ---------===//
   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 "benchmark/benchmark.h"
  10 #include "llvm/ADT/SmallVector.h"
  11 #include "llvm/IR/Intrinsics.h"
  12
  13 using namespace llvm;
  14 using namespace Intrinsic;
  15
  16 static void BM_GetIntrinsicInfoTableEntries(benchmark::State &state) {
  17   SmallVector<IITDescriptor> Table;
  18   for (auto _ : state) {
  19     for (ID ID = 1; ID < num_intrinsics; ++ID) {
  20       // This makes sure the vector does not keep growing, as well as after the
  21       // first iteration does not result in additional allocations.
  22       Table.clear();
  23       getIntrinsicInfoTableEntries(ID, Table);
  24     }
  25   }
  26 }
  27
  28 BENCHMARK(BM_GetIntrinsicInfoTableEntries);
  29
  30 BENCHMARK_MAIN();