65 lines
1.6 KiB
Diff
65 lines
1.6 KiB
Diff
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2007-06-15 Jakub Jelinek <jakub@redhat.com>
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PR tree-optimization/32353
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* tree-ssa-structalias.c (set_uids_in_ptset): Also handle RESULT_DECL.
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* g++.dg/opt/nrv13.C: New test.
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--- gcc/tree-ssa-structalias.c.jj 2007-06-11 11:12:27.000000000 +0200
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+++ gcc/tree-ssa-structalias.c 2007-06-15 16:40:29.000000000 +0200
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@@ -4343,7 +4343,8 @@ set_uids_in_ptset (tree ptr, bitmap into
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bitmap_set_bit (into, DECL_UID (sv->var));
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}
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else if (TREE_CODE (vi->decl) == VAR_DECL
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- || TREE_CODE (vi->decl) == PARM_DECL)
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+ || TREE_CODE (vi->decl) == PARM_DECL
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+ || TREE_CODE (vi->decl) == RESULT_DECL)
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{
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if (var_can_have_subvars (vi->decl)
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&& get_subvars_for_var (vi->decl))
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--- gcc/testsuite/g++.dg/opt/nrv13.C.jj 2007-06-15 16:59:02.000000000 +0200
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+++ gcc/testsuite/g++.dg/opt/nrv13.C 2007-06-15 17:03:39.000000000 +0200
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@@ -0,0 +1,42 @@
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+// PR tree-optimization/32353
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+// { dg-do run }
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+// { dg-options "-O2" }
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+
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+extern "C" void abort ();
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+
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+struct A
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+{
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+ int f;
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+ A (int x) : f (x) {}
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+};
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+
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+A
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+foo (const A &x, const A &y)
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+{
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+ A r (0);
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+ r = x.f == -111 ? y : (y.f == -111 || x.f > y.f) ? x : y;
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+ A s (0);
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+ r = r.f == -111 ? s : (r.f > s.f) ? r : s;
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+ return r;
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+}
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+
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+int
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+main ()
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+{
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+ if (foo (A (0), A (1)).f != 1)
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+ abort ();
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+ if (foo (A (1), A (9)).f != 9)
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+ abort ();
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+ if (foo (A (9), A (1)).f != 9)
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+ abort ();
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+ if (foo (A (-4), A (-5)).f != 0)
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+ abort ();
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+ if (foo (A (-111), A (-111)).f != 0)
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+ abort ();
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+ if (foo (A (2), A (-111)).f != 2)
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+ abort ();
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+ if (foo (A (-111), A (6)).f != 6)
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+ abort ();
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+ if (foo (A (-111), A (-4)).f != 0)
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+ abort ();
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+}
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