diff options
| author | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-06-12 07:19:36 +0000 |
|---|---|---|
| committer | uros <uros@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-06-12 07:19:36 +0000 |
| commit | a307ebdfb33743f87b3be835ad2ead02ea5e3fa2 (patch) | |
| tree | d7c8c6158be8c32577d9db56a22df3abbd3fc85f | |
| parent | a6086190d99653ef9eb08fbf81297d04f3fc035f (diff) | |
| download | ppe42-gcc-a307ebdfb33743f87b3be835ad2ead02ea5e3fa2.tar.gz ppe42-gcc-a307ebdfb33743f87b3be835ad2ead02ea5e3fa2.zip | |
* fold-const (fold_binary) [RDIV_EXPR]: Also optimize a/cbrt(b/c)
into a*cbrt(c/b) if flag_unsafe_math_optimizations is set.
testuite/ChangeLog:
* gcc.dg/builtins-11.c: Also check folding of a/cbrt(b/c).
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125641 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/fold-const.c | 4 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/builtins-11.c | 4 |
4 files changed, 15 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a381a862aa7..a36f359d2da 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2007-06-12 Uros Bizjak <ubizjak@gmail.com> + + * fold-const (fold_binary) [RDIV_EXPR]: Also optimize a/cbrt(b/c) + into a*cbrt(c/b) if flag_unsafe_math_optimizations is set. + 2007-06-11 Diego Novillo <dnovillo@google.com> * Makefile.in (reload1.o-warn): Remove. diff --git a/gcc/fold-const.c b/gcc/fold-const.c index d2dd8cb2fbc..06b7c74a2b5 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -10555,8 +10555,8 @@ fold_binary (enum tree_code code, tree type, tree op0, tree op1) } } - /* Optimize a/sqrt(b/c) into a*sqrt(c/b). */ - if (BUILTIN_SQRT_P (fcode1)) + /* Optimize a/root(b/c) into a*root(c/b). */ + if (BUILTIN_ROOT_P (fcode1)) { tree rootarg = CALL_EXPR_ARG (arg1, 0); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 1e401362aec..73d6b96fdda 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2007-06-12 Uros Bizjak <ubizjak@gmail.com> + + * gcc.dg/builtins-11.c: Also check folding of a/cbrt(b/c). + 2007-06-12 Paul Thomas <pault@gcc.gnu.org> PR fortran/29786 diff --git a/gcc/testsuite/gcc.dg/builtins-11.c b/gcc/testsuite/gcc.dg/builtins-11.c index ba4689201c4..ba0d2dbf0d5 100644 --- a/gcc/testsuite/gcc.dg/builtins-11.c +++ b/gcc/testsuite/gcc.dg/builtins-11.c @@ -12,6 +12,7 @@ extern void link_error(void); extern double exp(double); extern double sqrt(double); +extern double cbrt(double); extern double pow(double,double); void test(double x, double y, double z) @@ -39,6 +40,9 @@ void test(double x, double y, double z) if (x/sqrt(y/z) != x*sqrt(z/y)) link_error (); + + if (x/cbrt(y/z) != x*cbrt(z/y)) + link_error (); } int main() |
