* reorg.c (dbr_schedule): Do not run the delay slot

	scheduling pass if the current function has no insns
	other than the prologue and epilogue.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@4252 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/reorg.c b/gcc/reorg.c
index 9948a91..e652225 100644 (file)
--- a/gcc/reorg.c
+++ b/gcc/reorg.c
@@ -3893,6 +3893,11 @@ dbr_schedule (first, file)
   flag_no_peephole = old_flag_no_peephole;
 #endif
 
+  /* If the current function has no insns other than the prologue and 
+     epilogue, then do not try to fill any delay slots.  */
+  if (n_basic_blocks == 0)
+    return;
+
   /* Find the highest INSN_UID and allocate and initialize our map from
      INSN_UID's to position in code.  */
   for (max_uid = 0, insn = first; insn; insn = NEXT_INSN (insn))