diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-02-07 13:24:38 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2005-02-07 13:24:38 +0000 |
| commit | bc33117f4102846bb8db37e5c37845ba65e3028c (patch) | |
| tree | f3c9b917a0f61ec5e98c3b1be02adc081d56f541 /gcc/testsuite/gcc.dg/builtins-47.c | |
| parent | 4d8203bc06c1d16f9ed6e23982085519e216fd25 (diff) | |
| download | gcc-bc33117f4102846bb8db37e5c37845ba65e3028c.tar.gz | |
2005-02-07 Richard Guenther <rguenth@gcc.gnu.org>
PR middle-end/19775
* builtins.c (fold_builtin_sqrt): Transform
sqrt(pow(x,y)) to pow(fabs(x),y*0.5), not
pow(x,y*0.5).
* gcc.dg/torture/builtin-power-1.c: Disable test for
invalid transformation.
* gcc.dg/builtins-10.c: Likewise. Disable one test we
no longer optimize.
* gcc.dg/builtins-47.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@94701 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/builtins-47.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/builtins-47.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/builtins-47.c b/gcc/testsuite/gcc.dg/builtins-47.c new file mode 100644 index 00000000000..19ae9736770 --- /dev/null +++ b/gcc/testsuite/gcc.dg/builtins-47.c @@ -0,0 +1,20 @@ +/* { dg-do run } */ +/* { dg-options "-ffast-math -fdump-tree-gimple" } */ + +extern double sqrt (double); +extern double pow (double, double); +extern void abort (void); + +int main () +{ + double x = -1.0; + if (sqrt (pow (x, 2)) != 1.0) + abort(); + if (sqrt (x*x) != 1.0) + abort(); + return 0; +} + +/* { dg-final { scan-tree-dump-times "sqrt" 0 "gimple" } } */ +/* { dg-final { scan-tree-dump-times "pow" 0 "gimple" } } */ + |