Revert "[pdb] Change /DEBUG:GHASH to emit 8 byte hashes."

A few tests haven't been properly updated, so reverting while
I have time to investigate proper fixes.

llvm-svn: 332672

1 files changed, 5 insertions, 4 deletions

diff --git a/llvm/lib/DebugInfo/CodeView/TypeHashing.cpp b/llvm/lib/DebugInfo/CodeView/TypeHashing.cpp
index a51770959ac..c2f8cd5466a 100644
--- a/llvm/lib/DebugInfo/CodeView/TypeHashing.cpp
+++ b/llvm/lib/DebugInfo/CodeView/TypeHashing.cpp
@@ -18,9 +18,10 @@ using namespace llvm::codeview;
 LocallyHashedType DenseMapInfo<LocallyHashedType>::Empty{0, {}};
 LocallyHashedType DenseMapInfo<LocallyHashedType>::Tombstone{hash_code(-1), {}};
 
-static std::array<uint8_t, 8> EmptyHash = { {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} };
-static std::array<uint8_t, 8> TombstoneHash = {
-  {0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} };
+static std::array<uint8_t, 20> EmptyHash;
+static std::array<uint8_t, 20> TombstoneHash = {
+    {0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+     0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
 
 GloballyHashedType DenseMapInfo<GloballyHashedType>::Empty{EmptyHash};
 GloballyHashedType DenseMapInfo<GloballyHashedType>::Tombstone{TombstoneHash};
@@ -70,5 +71,5 @@ GloballyHashedType::hashType(ArrayRef<uint8_t> RecordData,
   auto TrailingBytes = RecordData.drop_front(Off);
   S.update(TrailingBytes);
 
-  return {S.final().take_back(8)};
+  return {S.final()};
 }