ff585feacf
Model C/C++ `errno` macro by adding a corresponding `errno` memory location kind to the IR. Preliminary work to separate `errno` writes from other memory accesses, to the benefit of alias analyses and optimization correctness. Previous discussion: https://discourse.llvm.org/t/rfc-modelling-errno-memory-effects/82972.
28 lines
862 B
C++
28 lines
862 B
C++
//===- llvm/unittest/Support/ModRefTest.cpp - ModRef tests ----------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/ModRef.h"
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#include "llvm/Support/raw_ostream.h"
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#include "gtest/gtest.h"
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#include <string>
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using namespace llvm;
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namespace {
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// Verify that printing a MemoryEffects does not end with a ,.
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TEST(ModRefTest, PrintMemoryEffects) {
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std::string S;
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raw_string_ostream OS(S);
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OS << MemoryEffects::none();
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EXPECT_EQ(S, "ArgMem: NoModRef, InaccessibleMem: NoModRef, ErrnoMem: "
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"NoModRef, Other: NoModRef");
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}
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} // namespace
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