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DWARF Type Hashing: Include reference and rvalue reference type in the declarable summary hashing path

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More support for 7.25 Part 5.

llvm-svn: 193129
This commit is contained in:
David Blaikie 2013-10-21 23:06:19 +00:00
parent 8d41a02789
commit da979f0e59
2 changed files with 69 additions and 1 deletions
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4
lib/CodeGen/AsmPrinter/DIEHash.cpp
View File

@ -201,7 +201,9 @@ void DIEHash::hashAttribute(AttrEntry Attr, dwarf::Tag Tag) {
// Step 5
// If the tag in Step 3 is one of ...
if (Tag == dwarf::DW_TAG_pointer_type) {
if (Tag == dwarf::DW_TAG_pointer_type ||
Tag == dwarf::DW_TAG_reference_type ||
Tag == dwarf::DW_TAG_rvalue_reference_type) {
// ... and the referenced type (via the DW_AT_type or DW_AT_friend
// attribute) ...
assert(Desc->getAttribute() == dwarf::DW_AT_type ||

66
unittests/CodeGen/DIEHashTest.cpp
View File

@ -198,4 +198,70 @@ TEST(DIEHashTest, Pointer) {
ASSERT_EQ(0x74ea73862e8708d2ULL, MD5Res);
}
// struct foo { foo &mem; };
TEST(DIEHashTest, Reference) {
DIE Foo(dwarf::DW_TAG_structure_type);
DIEInteger Eight(8);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEString FooStr(&Eight, "foo");
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
DIEString MemStr(&Eight, "mem");
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
DIEInteger Zero(0);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
DIE FooRef(dwarf::DW_TAG_reference_type);
FooRef.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEEntry FooEntry(&Foo);
FooRef.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooEntry);
DIE FooRefConst(dwarf::DW_TAG_const_type);
DIEEntry FooRefRef(&FooRef);
FooRefConst.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefRef);
DIEEntry FooRefConstRef(&FooRefConst);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefConstRef);
Foo.addChild(Mem);
uint64_t MD5Res = DIEHash().computeTypeSignature(&Foo);
ASSERT_EQ(0xa0b15f467ad4525bULL, MD5Res);
}
// struct foo { foo &&mem; };
TEST(DIEHashTest, RValueReference) {
DIE Foo(dwarf::DW_TAG_structure_type);
DIEInteger Eight(8);
Foo.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEString FooStr(&Eight, "foo");
Foo.addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &FooStr);
DIE *Mem = new DIE(dwarf::DW_TAG_member);
DIEString MemStr(&Eight, "mem");
Mem->addValue(dwarf::DW_AT_name, dwarf::DW_FORM_strp, &MemStr);
DIEInteger Zero(0);
Mem->addValue(dwarf::DW_AT_data_member_location, dwarf::DW_FORM_data1, &Zero);
DIE FooRef(dwarf::DW_TAG_rvalue_reference_type);
FooRef.addValue(dwarf::DW_AT_byte_size, dwarf::DW_FORM_data1, &Eight);
DIEEntry FooEntry(&Foo);
FooRef.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooEntry);
DIE FooRefConst(dwarf::DW_TAG_const_type);
DIEEntry FooRefRef(&FooRef);
FooRefConst.addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefRef);
DIEEntry FooRefConstRef(&FooRefConst);
Mem->addValue(dwarf::DW_AT_type, dwarf::DW_FORM_ref4, &FooRefConstRef);
Foo.addChild(Mem);
uint64_t MD5Res = DIEHash().computeTypeSignature(&Foo);
ASSERT_EQ(0xad211c8c3b31e57ULL, MD5Res);
}
}