Remove -O[0123s] gcc optimization flags for gcc pass 4 speedups again.

We cannot guarantee that (un)optimized code compiles and/or generates
fully functional code, so don't tempt the user to try it out.

* session.h (struct systemtap_session): Remove gcc_flags string field.
* hash.cxx (find_script_hash): Don't add gcc_flags.
* main.cxx (usage): Remove -O[0123s] documentation.
(main): Don't use gcc_flags.
* buildrun.cxx (compile_pass): Don't add gcc_flags to EXTRA_CFLAGS.
* stap1.in: Remove -O[0123s] documentation.
* testsuite/systemtap.base/cache.exp: Remove tests for -O[0123s].

1 files changed, 0 insertions, 1 deletions

diff --git a/hash.cxx b/hash.cxx
index 4e85ed28..45ae05eb 100644
--- a/hash.cxx
+++ b/hash.cxx
@@ -175,7 +175,6 @@ find_script_hash (systemtap_session& s, const string& script, const hash &base)
   h.add(s.ignore_dwarf);		// --ignore-dwarf
   h.add(s.consult_symtab);		// --kelf, --kmap
   h.add(s.skip_badvars);		// --skip-badvars
-  h.add(s.gcc_flags);                   // -O[0123s]
   if (!s.kernel_symtab_path.empty())	// --kmap
     {
       h.add(s.kernel_symtab_path);