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tree-tailcall.c (tree_optimize_tail_calls_1): Use fold_convert, reverting my 2004-09-07 patch to use build_int_cst.

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.:	* tree-tailcall.c (tree_optimize_tail_calls_1): Use fold_convert,
	reverting my 2004-09-07 patch to use build_int_cst.
testsuite:
	* gcc.c-torture/compile/acc1.c: New.

From-SVN: r88759
This commit is contained in:
Nathan Sidwell 2004-10-08 15:09:16 +00:00
parent 8d488306cb
commit a58eeb317d
4 changed files with 42 additions and 4 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2004-10-08 Nathan Sidwell <nathan@codesourcery.com>
* tree-tailcall.c (tree_optimize_tail_calls_1): Use fold_convert,
reverting my 2004-09-07 patch to use build_int_cst.
2004-10-08 Eric Botcazou <ebotcazou@libertysurf.fr>
PR target/17245

8
gcc/testsuite/ChangeLog
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@ -1,3 +1,7 @@
2004-10-08 Nathan Sidwell <nathan@codesourcery.com>
* gcc.c-torture/compile/acc1.c: New.
2004-10-08 Andrew Pinski <pinskia@physics.uc.edu>
* gcc.dg/darwin-longdouble.c: Include stdlib.h and string.h.
@ -22329,7 +22333,7 @@ Thu Apr 27 15:58:18 MET DST 2000 Jan Hubicka <jh@suse.cz>
* gcc.c-torture/compile/labels-2.c: New test.
1999-12-27 Martin von Löwis <loewis@informatik.hu-berlin.de>
1999-12-27 Martin von Löwis <loewis@informatik.hu-berlin.de>
* gcc.c-torture/execute/991227-1.c: New test.
@ -22337,7 +22341,7 @@ Thu Apr 27 15:58:18 MET DST 2000 Jan Hubicka <jh@suse.cz>
* g++.old-deja/g++.pt/instantiate6.C: Remove excess errors XFAIL.
1999-12-21 Martin von Löwis <loewis@informatik.hu-berlin.de>
1999-12-21 Martin von Löwis <loewis@informatik.hu-berlin.de>
* gcc.c-torture/execute/991221-1.c: New test.

21
gcc/testsuite/gcc.c-torture/compile/acc1.c Normal file
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@ -0,0 +1,21 @@
/* { dg-options "-O2 -ffast-math" } */
/* Fast maths allows tail recursion to be turned into iteration. */
double
foo (int n, double f)
{
if (n == 0)
return f;
else
return f + foo (n - 1, f);
}
double
bar (int n, double f)
{
if (n == 0)
return f;
else
return f * bar (n - 1, f);
}

12
gcc/tree-tailcall.c
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@ -896,7 +896,11 @@ tree_optimize_tail_calls_1 (bool opt_tailcalls)
add_referenced_tmp_var (tmp);
phi = create_phi_node (tmp, first);
add_phi_arg (&phi, build_int_cst (ret_type, 0), EDGE_PRED (first, 0));
add_phi_arg (&phi,
/* RET_TYPE can be a float when -ffast-maths is
enabled. */
fold_convert (ret_type, integer_zero_node),
EDGE_PRED (first, 0));
a_acc = PHI_RESULT (phi);
}
@ -908,7 +912,11 @@ tree_optimize_tail_calls_1 (bool opt_tailcalls)
add_referenced_tmp_var (tmp);
phi = create_phi_node (tmp, first);
add_phi_arg (&phi, build_int_cst (ret_type, 1), EDGE_PRED (first, 0));
add_phi_arg (&phi,
/* RET_TYPE can be a float when -ffast-maths is
enabled. */
fold_convert (ret_type, integer_one_node),
EDGE_PRED (first, 0));
m_acc = PHI_RESULT (phi);
}
}