[llvm] [DOC][DTLTO] Update DTLTO documentation for the LLVM 22 release (PR #177368)

[Ben Dunbobbin via llvm-commits]

================
@@ -165,22 +169,22 @@ following backend compilation commands with maximum parallelism:
     /usr/bin/clang -O2 -c -fprofile-sample-use=my.prof t2.o  -fthinlto-index=t2.o.thinlto.bc -o t2.native.o \
       -fproc-stat-report=t2.stats.txt
 
-TODOs
------
+Limitations
+-----------
 
-The following features are planned for DTLTO but not yet implemented:
+The following features are not implemented at this time:
 
-- Support for the ThinLTO in-process cache.
 - Support for platforms other than ELF and COFF.
-- Support for archives with bitcode members.
 - Support for more LTO configurations; only a very limited set of LTO
-  configurations is supported currently, e.g., support for basic block sections
+  configurations is supported currently, e.g. support for basic block sections
----------------
bd1976bris wrote:

I have adopted your suggestion here. Thanks.

https://github.com/llvm/llvm-project/pull/177368