From 1bc5aee63eb72b341f506ad058502cd0361f0d10 Mon Sep 17 00:00:00 2001 From: Ben Cheng Date: Tue, 25 Mar 2014 22:37:19 -0700 Subject: Initial checkin of GCC 4.9.0 from trunk (r208799). Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba --- gcc-4.9/gcc/testsuite/gcc.dg/sibcall-1.c | 49 ++++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 gcc-4.9/gcc/testsuite/gcc.dg/sibcall-1.c (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/sibcall-1.c') diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/sibcall-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/sibcall-1.c new file mode 100644 index 000000000..e8a95513d --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/sibcall-1.c @@ -0,0 +1,49 @@ +/* Simple check that sibling calls are performed from a + void non-leaf-function taking one int argument calling itself. + + Copyright (C) 2002 Free Software Foundation Inc. + Contributed by Hans-Peter Nilsson */ + +/* { dg-do run } */ +/* { dg-options "-O2 -foptimize-sibling-calls" } */ + +/* The option -foptimize-sibling-calls is the default, but serves as + marker. Self-recursion tail calls are optimized for all targets, + regardless of presence of sibcall patterns. */ + +extern void abort (void); +extern void exit (int); + +extern void recurser_void (int); +extern void track (int); + +int main () +{ + recurser_void (0); + exit (0); +} + +void +recurser_void (int n) +{ + if (n == 0 || n == 7) + track (n); + + if (n == 10) + return; + + recurser_void (n + 1); +} + +void *trackpoint; + +void __attribute__ ((noinline)) +track (int n) +{ + char stackpos[1]; + + if (n == 0) + trackpoint = stackpos; + else if (n != 7 || trackpoint != stackpos) + abort (); +} -- cgit v1.2.3