x86: suppress optimization after potential non-insn
Just like avoiding to do other transformations potentially affected by
stand-alone prefixes or direct data emission, also avoid optimization
on the following insn.
diff --git a/gas/config/tc-i386.c b/gas/config/tc-i386.c
index 059dd49..f2f1e3b 100644
--- a/gas/config/tc-i386.c
+++ b/gas/config/tc-i386.c
@@ -5120,6 +5120,11 @@
retry:
init_globals ();
+ /* Suppress optimization when the last thing we saw may not have been
+ a proper instruction (e.g. a stand-alone prefix or .byte). */
+ if (last_insn->kind != last_insn_other)
+ i.no_optimize = true;
+
/* First parse an instruction mnemonic & call i386_operand for the operands.
We assume that the scrubber has arranged it so that line[0] is the valid
start of a (possibly prefixed) mnemonic. */
