llvm/unittests/IR/DebugInfoTest.cpp
Duncan P. N. Exon Smith 83902832de Revert "Revert "DI: Fold constant arguments into a single MDString""
This reverts commit r218918, effectively reapplying r218914 after fixing
an Ocaml bindings test and an Asan crash.  The root cause of the latter
was a tightened-up check in `DILexicalBlock::Verify()`, so I'll file a
PR to investigate who requires the loose check (and why).

Original commit message follows.

--

This patch addresses the first stage of PR17891 by folding constant
arguments together into a single MDString.  Integers are stringified and
a `\0` character is used as a separator.

Part of PR17891.

Note: I've attached my testcases upgrade scripts to the PR.  If I've
just broken your out-of-tree testcases, they might help.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@219010 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-03 20:01:09 +00:00

69 lines
2.4 KiB
C++

//===- llvm/unittest/IR/DebugInfo.cpp - DebugInfo tests -------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/DebugInfo.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace llvm {
static void PrintTo(const StringRef &S, ::std::ostream *os) {
*os << "(" << (void *)S.data() << "," << S.size() << ") = '";
for (auto C : S)
if (C)
*os << C;
else
*os << "\\00";
*os << "'";
}
static void PrintTo(const DIHeaderFieldIterator &I, ::std::ostream *os) {
PrintTo(I.getCurrent(), os);
*os << " in ";
PrintTo(I.getHeader(), os);
}
} // end namespace llvm
namespace {
#define MAKE_FIELD_ITERATOR(S) \
DIHeaderFieldIterator(StringRef(S, sizeof(S) - 1))
TEST(DebugInfoTest, DIHeaderFieldIterator) {
ASSERT_EQ(DIHeaderFieldIterator(), DIHeaderFieldIterator());
ASSERT_NE(DIHeaderFieldIterator(), MAKE_FIELD_ITERATOR(""));
ASSERT_EQ(DIHeaderFieldIterator(), ++MAKE_FIELD_ITERATOR(""));
ASSERT_EQ("", *DIHeaderFieldIterator(""));
ASSERT_NE(DIHeaderFieldIterator(), MAKE_FIELD_ITERATOR("stuff"));
ASSERT_EQ(DIHeaderFieldIterator(), ++MAKE_FIELD_ITERATOR("stuff"));
ASSERT_EQ("stuff", *DIHeaderFieldIterator("stuff"));
ASSERT_NE(DIHeaderFieldIterator(), MAKE_FIELD_ITERATOR("st\0uff"));
ASSERT_NE(DIHeaderFieldIterator(), ++MAKE_FIELD_ITERATOR("st\0uff"));
ASSERT_EQ(DIHeaderFieldIterator(), ++++MAKE_FIELD_ITERATOR("st\0uff"));
ASSERT_EQ("st", *MAKE_FIELD_ITERATOR("st\0uff"));
ASSERT_EQ("uff", *++MAKE_FIELD_ITERATOR("st\0uff"));
ASSERT_NE(DIHeaderFieldIterator(), MAKE_FIELD_ITERATOR("stuff\0"));
ASSERT_NE(DIHeaderFieldIterator(), ++MAKE_FIELD_ITERATOR("stuff\0"));
ASSERT_EQ(DIHeaderFieldIterator(), ++++MAKE_FIELD_ITERATOR("stuff\0"));
ASSERT_EQ("stuff", *MAKE_FIELD_ITERATOR("stuff\0"));
ASSERT_EQ("", *++MAKE_FIELD_ITERATOR("stuff\0"));
ASSERT_NE(DIHeaderFieldIterator(), MAKE_FIELD_ITERATOR("\0stuff"));
ASSERT_NE(DIHeaderFieldIterator(), ++MAKE_FIELD_ITERATOR("\0stuff"));
ASSERT_EQ(DIHeaderFieldIterator(), ++++MAKE_FIELD_ITERATOR("\0stuff"));
ASSERT_EQ("", *MAKE_FIELD_ITERATOR("\0stuff"));
ASSERT_EQ("stuff", *++MAKE_FIELD_ITERATOR("\0stuff"));
}
} // end namespace