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author | Hans Wennborg <hans@hanshq.net> | 2014-04-30 16:25:02 +0000 |
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committer | Hans Wennborg <hans@hanshq.net> | 2014-04-30 16:25:02 +0000 |
commit | a8febf2283921157da1539c079cd74a55bf89a5a (patch) | |
tree | 9d35112077dfea406ecb273ab0ea1ee2e99292e1 /unittests | |
parent | b1c1b8a78dce82d3740316ddf94029696ba68674 (diff) | |
download | llvm-a8febf2283921157da1539c079cd74a55bf89a5a.tar.gz llvm-a8febf2283921157da1539c079cd74a55bf89a5a.tar.bz2 llvm-a8febf2283921157da1539c079cd74a55bf89a5a.tar.xz |
ELFObjectWriter: deduplicate suffices in strtab
We already do this for shstrtab, so might as well do it for strtab. This
extracts the string table building code into a separate class. The idea
is to use it for other object formats too.
I mostly wanted to do this for the general principle, but it does save a
little bit on object file size. I tried this on a clang bootstrap and
saved 0.54% on the sum of object file sizes (1.14 MB out of 212 MB for
a release build).
Differential Revision: http://reviews.llvm.org/D3533
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207670 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'unittests')
-rw-r--r-- | unittests/Object/CMakeLists.txt | 1 | ||||
-rw-r--r-- | unittests/Object/StringTableBuilderTest.cpp | 40 |
2 files changed, 41 insertions, 0 deletions
diff --git a/unittests/Object/CMakeLists.txt b/unittests/Object/CMakeLists.txt index 6dd66ce75b..580a894362 100644 --- a/unittests/Object/CMakeLists.txt +++ b/unittests/Object/CMakeLists.txt @@ -4,5 +4,6 @@ set(LLVM_LINK_COMPONENTS ) add_llvm_unittest(ObjectTests + StringTableBuilderTest.cpp YAMLTest.cpp ) diff --git a/unittests/Object/StringTableBuilderTest.cpp b/unittests/Object/StringTableBuilderTest.cpp new file mode 100644 index 0000000000..130eb4a3d7 --- /dev/null +++ b/unittests/Object/StringTableBuilderTest.cpp @@ -0,0 +1,40 @@ +//===----------- StringTableBuilderTest.cpp -------------------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "gtest/gtest.h" +#include "llvm/Object/StringTableBuilder.h" +#include <string> + +using namespace llvm; + +namespace { + +TEST(StringTableBuilderTest, Basic) { + StringTableBuilder B; + + B.add("foo"); + B.add("bar"); + B.add("foobar"); + + B.finalize(); + + std::string Expected; + Expected += '\x00'; + Expected += "foobar"; + Expected += '\x00'; + Expected += "foo"; + Expected += '\x00'; + + EXPECT_EQ(Expected, B.data()); + EXPECT_EQ(1U, B.getOffset("foobar")); + EXPECT_EQ(4U, B.getOffset("bar")); + EXPECT_EQ(8U, B.getOffset("foo")); +} + +} |