[PATCH 4/6] cfgrtl: Add missing call to `onlyjump_p'

[Maciej W. Rozycki]

If any unconditional jumps within a block have side effects then the 
block cannot be considered empty.

        gcc/
        * cfgrtl.c (rtl_block_empty_p): Return false if `!onlyjump_p' 
        too.
---
 gcc/cfgrtl.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

gcc-cfgrtl-block-empty-only-jump.diff
Index: gcc/gcc/cfgrtl.c
===================================================================
--- gcc.orig/gcc/cfgrtl.c
+++ gcc/gcc/cfgrtl.c
@@ -4860,7 +4860,8 @@ rtl_block_empty_p (basic_block bb)
     return true;
 
   FOR_BB_INSNS (bb, insn)
-    if (NONDEBUG_INSN_P (insn) && !any_uncondjump_p (insn))
+    if (NONDEBUG_INSN_P (insn)
+       && (!any_uncondjump_p (insn) || !onlyjump_p (insn)))
       return false;
 
   return true;