From c0987082206d202c20ebe1d528c1b28a875160ac Mon Sep 17 00:00:00 2001 From: David Blaikie Date: Wed, 16 Oct 2013 23:36:20 +0000 Subject: DIEHash: Use DW_FORM_sdata for integers, per spec. This allows us to produce the same hash as GCC for at least some simple examples. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192855 91177308-0d34-0410-b5e6-96231b3b80d8 --- unittests/CodeGen/DIEHashTest.cpp | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'unittests') diff --git a/unittests/CodeGen/DIEHashTest.cpp b/unittests/CodeGen/DIEHashTest.cpp index 91b03224f0..92b6d7686c 100644 --- a/unittests/CodeGen/DIEHashTest.cpp +++ b/unittests/CodeGen/DIEHashTest.cpp @@ -23,6 +23,22 @@ TEST(DIEHashData1Test, DIEHash) { DIEInteger Size(4); Die.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Size); uint64_t MD5Res = Hash.computeTypeSignature(&Die); - ASSERT_EQ(0x4F68EF1039F8D2BULL, MD5Res); + ASSERT_EQ(0x1AFE116E83701108ULL, MD5Res); +} + +TEST(DIEHashTrivialTypeTest, DIEHash) { + // A complete, but simple, type containing no members and defined on the first + // line of a file. + DIE FooType(dwarf::DW_TAG_structure_type); + DIEInteger One(1); + FooType.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &One); + + // Line and file number are ignored. + FooType.addValue(dwarf::DW_AT_decl_file, dwarf::DW_FORM_data1, &One); + FooType.addValue(dwarf::DW_AT_decl_line, dwarf::DW_FORM_data1, &One); + uint64_t MD5Res = DIEHash().computeTypeSignature(&FooType); + + // The exact same hash GCC produces for this DIE. + ASSERT_EQ(0x715305ce6cfd9ad1ULL, MD5Res); } } -- cgit v1.2.3