testdata/llvm/test-opt.cc

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// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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// software distributed under the License is distributed on an
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// This is a test-only file.  It was used to generate test-opt.bc
// which is used by the unit test to test optimization passes.

static const int m = 1;

static int transform(int d) {
  return d + m;
}

int loop_null(int* data, int num) {
  int res = 0;
  for (int i = 0; i < num; i++) {
    // Expected to be optimized out.
    if (i % 2 == 0) {
      res += transform(data[i]);
    }
    if (i % 2 == 0) {
      res -= transform(data[i]);
    }
  }
  return res;
}