fix pr/45972

From-SVN: r165402

fix pr/45972
From-SVN: r165402
98d30e4f · Xinliang David Li · Xinliang David Li · f4684242 · 98d30e4f · 98d30e4f
Commit 98d30e4f authored Oct 12, 2010 by Xinliang David Li Committed by Xinliang David Li Oct 12, 2010
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gcc/ChangeLog
+6 -0

gcc/tree-ssa-uninit.c
+3 -0

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2010-10-12  Xinliang David Li  <davidxl@google.com>
+
+	PR tree-optimization/45972
+	* gcc/tree-ssa-uninit.c (compute_uninit_opnds_pos): skip phis
+	with too many arguments.
+
 2010-10-12  Jakub Jelinek  <jakub@redhat.com>

 	PR fortran/45636
--- a/gcc/tree-ssa-uninit.c
+++ b/gcc/tree-ssa-uninit.c
@@ -149,6 +149,9 @@ compute_uninit_opnds_pos (gimple phi)
  unsigned uninit_opnds = 0;

  n = gimple_phi_num_args (phi);
+  /* Bail out for phi with too many args.  */
+  if (n > 32)
+    return 0;

  for (i = 0; i < n; ++i)
    {