sparc: Treat instructions with length 0 as empty

This is to handle the membar_empty instruction that can be generated
when compiling for UT699.

gcc/ChangeLog:

	* config/sparc/sparc.cc (next_active_non_empty_insn): Length 0 treated as empty

diff --git a/gcc/config/sparc/sparc.cc b/gcc/config/sparc/sparc.cc
index 62c57cc53159835ad90db595d63925c3666c8c5f..30fa4474bbd0321260c51acc9dcb8b3e212daa22 100644 (file)
--- a/gcc/config/sparc/sparc.cc
+++ b/gcc/config/sparc/sparc.cc
@@ -1119,6 +1119,7 @@ next_active_non_empty_insn (rtx_insn *insn)
   while (insn
         && (GET_CODE (PATTERN (insn)) == UNSPEC_VOLATILE
             || GET_CODE (PATTERN (insn)) == ASM_INPUT
+            || get_attr_length (insn) == 0
             || (USEFUL_INSN_P (insn)
                 && (asm_noperands (PATTERN (insn)) >= 0)
                 && !strcmp (decode_asm_operands (PATTERN (insn),