Add a RAW mode to StringTableBuilder.

In this mode it just tries to tail merge the strings without imposing any other
format constrains. It will not, for example, add a null byte between them.

Also add support for keeping a tentative size and offset if we decide to
not optimize after all.

This will be used shortly in lld for merging SHF_STRINGS sections.

llvm-svn: 251153

1 files changed, 2 insertions, 2 deletions

diff --git a/llvm/lib/MC/ELFObjectWriter.cpp b/llvm/lib/MC/ELFObjectWriter.cpp
index 5fdfcf9ef2d..230d3d775b1 100644
--- a/llvm/lib/MC/ELFObjectWriter.cpp
+++ b/llvm/lib/MC/ELFObjectWriter.cpp
@@ -109,7 +109,7 @@ class ELFObjectWriter : public MCObjectWriter {
 
     BumpPtrAllocator Alloc;
     StringSaver VersionSymSaver{Alloc};
-    StringTableBuilder StrTabBuilder;
+    StringTableBuilder StrTabBuilder{StringTableBuilder::ELF};
 
     /// @}
 
@@ -880,7 +880,7 @@ void ELFObjectWriter::computeSymbolTable(
   for (const std::string &Name : FileNames)
     StrTabBuilder.add(Name);
 
-  StrTabBuilder.finalize(StringTableBuilder::ELF);
+  StrTabBuilder.finalize();
 
   for (const std::string &Name : FileNames)
     Writer.writeSymbol(StrTabBuilder.getOffset(Name),