(output_call): Don't use the delay slot of a bsr.n

to modify the return address, unless -O2 specified.

From-SVN: r3513

diff --git a/gcc/config/m88k/m88k.c b/gcc/config/m88k/m88k.c
index c4718fb..e2465e3 100644 (file)
--- a/gcc/config/m88k/m88k.c
+++ b/gcc/config/m88k/m88k.c
@@ -861,14 +861,20 @@ output_call (operands, addr)
          NOTE_LINE_NUMBER (jump) = NOTE_INSN_DELETED;
          NOTE_SOURCE_FILE (jump) = 0;
 
-         /* If we loose, we must use the non-delay form.  This is unlikely
+         /* We only do this optimization if -O2, modifying the value of
+            r1 in the delay slot confuses debuggers and profilers on some
+            systems.
+
+            If we loose, we must use the non-delay form.  This is unlikely
             to ever happen.  If it becomes a problem, claim that a call
             has two delay slots and only the second can be filled with
             a jump.  */
 #ifdef AS_BUG_IMMEDIATE_LABEL /* The assembler restricts immediate values.  */
-         if (! ADD_INTVAL (delta * 2))
+         if (optimize < 2
+             || ! ADD_INTVAL (delta * 2))
 #else
-         if (! ADD_INTVAL (delta))
+         if (optimize < 2
+             || ! ADD_INTVAL (delta))
 #endif
            {
              operands[1] = dest;