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llvm-mirror/unittests/ADT/SequenceTest.cpp
Mehdi Amini ff780e6f68 Revert "[llvm] Make Sequence reverse-iterable"
This reverts commit e772216e708937988c039420d2c559568f91ae27
(and fixup 7f6c878a2c035eb6325ab228d9bc2d257509d959).

The build is broken with gcc5 host compiler:

In file included from
                 from mlir/lib/Dialect/Utils/StructuredOpsUtils.cpp:9:
tools/mlir/include/mlir/IR/BuiltinAttributes.h.inc:424:57: error: type/value mismatch at argument 1 in template parameter list for 'template<class ItTy, class FuncTy, class FuncReturnTy> class llvm::mapped_iterator'
                               std::function<T(ptrdiff_t)>>;
                                                         ^
tools/mlir/include/mlir/IR/BuiltinAttributes.h.inc:424:57: note:   expected a type, got 'decltype (seq<ptrdiff_t>(0, 0))::const_iterator'
2021-06-08 17:03:10 +00:00

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//===- SequenceTest.cpp - Unit tests for a sequence abstraciton -----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/Sequence.h"
#include "gtest/gtest.h"
#include <list>
using namespace llvm;
namespace {
TEST(SequenceTest, Basic) {
int x = 0;
for (int i : seq(0, 10)) {
EXPECT_EQ(x, i);
x++;
}
EXPECT_EQ(10, x);
auto my_seq = seq(0, 4);
EXPECT_EQ(4, my_seq.end() - my_seq.begin());
for (int i : {0, 1, 2, 3})
EXPECT_EQ(i, (int)my_seq.begin()[i]);
EXPECT_TRUE(my_seq.begin() < my_seq.end());
auto adjusted_begin = my_seq.begin() + 2;
auto adjusted_end = my_seq.end() - 2;
EXPECT_TRUE(adjusted_begin == adjusted_end);
EXPECT_EQ(2, *adjusted_begin);
EXPECT_EQ(2, *adjusted_end);
}
} // anonymous namespace