bd52d17906
too large to list, but see: http://gcc.gnu.org/gcc-3.4/changes.html http://gcc.gnu.org/gcc-4.0/changes.html http://gcc.gnu.org/gcc-4.1/changes.html for the details.
51 lines
949 B
C
51 lines
949 B
C
/* Simple check that sibling calls are performed from a
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void non-leaf-function taking no arguments calling itself.
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Copyright (C) 2002 Free Software Foundation Inc.
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Contributed by Hans-Peter Nilsson <hp@bitrange.com> */
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/* { dg-do run } */
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/* { dg-options "-O2 -foptimize-sibling-calls" } */
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/* The option -foptimize-sibling-calls is the default, but serves as
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marker. Self-recursion tail calls are optimized for all targets,
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regardless of presence of sibcall patterns. */
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extern void abort (void);
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extern void exit (int);
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extern void recurser_void (void);
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extern void track (void);
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int n = 0;
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int main ()
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{
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recurser_void ();
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exit (0);
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}
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void
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recurser_void (void)
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{
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if (n == 0 || n == 7)
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track ();
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if (n == 10)
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return;
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n++;
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recurser_void ();
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}
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void *trackpoint;
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void
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track ()
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{
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char stackpos[1];
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if (n == 0)
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trackpoint = stackpos;
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else if (n != 7 || trackpoint != stackpos)
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abort ();
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}
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