[lld] [LLD][COFF] Ensure .bss is merged at the end of a section. (PR #137677)

[Martin Storsjö via llvm-commits]

================
@@ -1566,6 +1567,30 @@ void Writer::createSymbolAndStringTable() {
   fileSize = alignTo(fileOff, ctx.config.fileAlign);
 }
 
+void Writer::mergeSection(const std::map<StringRef, StringRef>::value_type &p) {
+  StringRef toName = p.second;
----------------
mstorsjo wrote:

I assume this factorized function is just a direct move of the code?

https://github.com/llvm/llvm-project/pull/137677