Recommit "[DWARFv5] Dump an MD5 checksum in the line-table header."

Adds missing support for DW_FORM_data16.

Update of r320852, fixing the unittest to use a hand-coded struct
instead of std::array to guarantee data layout.

Differential Revision: https://reviews.llvm.org/D41090

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@320886 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 2 deletions

diff --git a/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h b/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
index 24075817219..de8ad4e5ef3 100644
--- a/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
+++ b/include/llvm/DebugInfo/DWARF/DWARFDebugLine.h
@@ -15,6 +15,7 @@
 #include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
 #include "llvm/DebugInfo/DWARF/DWARFFormValue.h"
 #include "llvm/DebugInfo/DWARF/DWARFRelocMap.h"
+#include "llvm/Support/MD5.h"
 #include <cstdint>
 #include <map>
 #include <string>
@@ -34,6 +35,7 @@ public:
     uint64_t DirIdx = 0;
     uint64_t ModTime = 0;
     uint64_t Length = 0;
+    MD5::MD5Result Checksum;
   };
 
   struct Prologue {
@@ -46,11 +48,11 @@ public:
     /// parameters affect interpretation of forms (used in the directory and
     /// file tables starting with v5).
     DWARFFormParams FormParams;
-    /// In v5, size in bytes of a segment selector.
-    uint8_t SegSelectorSize;
     /// The number of bytes following the prologue_length field to the beginning
     /// of the first byte of the statement program itself.
     uint64_t PrologueLength;
+    /// In v5, size in bytes of a segment selector.
+    uint8_t SegSelectorSize;
     /// The size in bytes of the smallest target machine instruction. Statement
     /// program opcodes that alter the address register first multiply their
     /// operands by this value.
@@ -66,6 +68,8 @@ public:
     uint8_t LineRange;
     /// The number assigned to the first special opcode.
     uint8_t OpcodeBase;
+    /// For v5, whether filename entries provide an MD5 checksum.
+    bool HasMD5;
     std::vector<uint8_t> StandardOpcodeLengths;
     std::vector<StringRef> IncludeDirectories;
     std::vector<FileNameEntry> FileNames;