Invalidate cached condition codes correctly in face of a-reg moves

with side-effects on the source registers

1 files changed, 2 insertions, 4 deletions

diff --git a/gnu/usr.bin/gcc/config/m68k/m68k.c b/gnu/usr.bin/gcc/config/m68k/m68k.c
index 5f932f0121f..a903a48383e 100644
--- a/gnu/usr.bin/gcc/config/m68k/m68k.c
+++ b/gnu/usr.bin/gcc/config/m68k/m68k.c
@@ -2189,11 +2189,9 @@ notice_update_cc (exp, insn)
 	}
       else if (ADDRESS_REG_P (SET_DEST (exp)))
 	{
-	  if (cc_status.value1
-	      && reg_overlap_mentioned_p (SET_DEST (exp), cc_status.value1))
+	  if (cc_status.value1 && modified_in_p (cc_status.value1, insn))
 	    cc_status.value1 = 0;
-	  if (cc_status.value2
-	      && reg_overlap_mentioned_p (SET_DEST (exp), cc_status.value2))
+	  if (cc_status.value2 && modified_in_p (cc_status.value2, insn))
 	    cc_status.value2 = 0; 
 	}
       else if (!FP_REG_P (SET_DEST (exp))