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| author | Nathan Sidwell <nathan@gcc.gnu.org> | 2004-10-08 15:09:16 +0000 |
|---|---|---|
| committer | Nathan Sidwell <nathan@gcc.gnu.org> | 2004-10-08 15:09:16 +0000 |
| commit | a58eeb317d540ceddf751e55581ab87035481118 (patch) | |
| tree | 87ee61fdcfae9d4b401833a244e5c76094c98074 /gcc | |
| parent | 8d488306cbde45ed18c6c98edd1107ca7ed23850 (diff) | |
| download | gcc-a58eeb317d540ceddf751e55581ab87035481118.zip gcc-a58eeb317d540ceddf751e55581ab87035481118.tar.gz gcc-a58eeb317d540ceddf751e55581ab87035481118.tar.bz2 | |
tree-tailcall.c (tree_optimize_tail_calls_1): Use fold_convert, reverting my 2004-09-07 patch to use build_int_cst.
.: * 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
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/acc1.c | 21 | ||||
| -rw-r--r-- | gcc/tree-tailcall.c | 12 |
4 files changed, 42 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 161ead2..1da3715 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index e83378b..d16487d 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -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. diff --git a/gcc/testsuite/gcc.c-torture/compile/acc1.c b/gcc/testsuite/gcc.c-torture/compile/acc1.c new file mode 100644 index 0000000..206d16b --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/acc1.c @@ -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); +} diff --git a/gcc/tree-tailcall.c b/gcc/tree-tailcall.c index 158a2d1..34ac8ee 100644 --- a/gcc/tree-tailcall.c +++ b/gcc/tree-tailcall.c @@ -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); } } |