flow.c (flow_find_cross_jump): Don't consider unconditional return insns for commoning.

* flow.c (flow_find_cross_jump): Don't consider unconditional return insns for commoning. From-SVN: r45101

flow.c (flow_find_cross_jump): Don't consider unconditional return insns for commoning.
* flow.c (flow_find_cross_jump): Don't consider unconditional return insns for commoning. From-SVN: r45101
687eccc0 · Richard Henderson · Richard Henderson · ba712955 · 687eccc0 · 687eccc0
Commit 687eccc0 authored Aug 22, 2001 by Richard Henderson Committed by Richard Henderson Aug 22, 2001
Hide whitespace changes
Inline Side-by-side

Showing with 7 additions and 2 deletions

gcc/ChangeLog
+3 -0

gcc/flow.c
+4 -2

No files found.
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
 2001-08-21  Richard Henderson  <rth@redhat.com>

+	* flow.c (flow_find_cross_jump): Don't consider unconditional
+	return insns for commoning.
+
 	* final.c (compute_alignments): Fix typo.

 	* expmed.c (CODE_FOR_insv, gen_insv): Provide defaults.

--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -3484,10 +3484,12 @@ flow_find_cross_jump (mode, bb1, bb2, f1, f2)
     need to be compared for equivalence, which we'll do below.  */

  i1 = bb1->end;
-  if (onlyjump_p (i1))
+  if (onlyjump_p (i1)
+      || (returnjump_p (i1) && !side_effects_p (PATTERN (i1))))
    i1 = PREV_INSN (i1);
  i2 = bb2->end;
-  if (onlyjump_p (i2))
+  if (onlyjump_p (i2)
+      || (returnjump_p (i2) && !side_effects_p (PATTERN (i2))))
    i2 = PREV_INSN (i2);

  last1 = afterlast1 = last2 = afterlast2 = NULL_RTX;