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| author | Roger Sayle <roger@eyesopen.com> | 2005-02-09 21:56:35 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2005-02-09 21:56:35 +0000 |
| commit | e3bb43c0fef35c410538453c6a70a22822e03b10 (patch) | |
| tree | b165cf0028ec1a832fc59f34df44d639c9c318a2 /gcc/tree.h | |
| parent | 08c2481a791a11ac8aee6652c6fb8c57faf4d584 (diff) | |
| download | gcc-e3bb43c0fef35c410538453c6a70a22822e03b10.zip gcc-e3bb43c0fef35c410538453c6a70a22822e03b10.tar.gz gcc-e3bb43c0fef35c410538453c6a70a22822e03b10.tar.bz2 | |
fold-const.c (fold_strip_sign_ops): New function to simplify a floating point expression ignoring the sign of the...
* fold-const.c (fold_strip_sign_ops): New function to simplify a
floating point expression ignoring the sign of the result.
(fold) <ABS_EXPR>: Use it to simplify fabs(x).
(fold) <MULT_EXPR>: Use it to simplify x*x.
* tree.h (fold_strip_sign_ops): Prototype here.
* builtins.c (fold_builtin_copysign): Take an additional FNDECL
argument. Use fold_strip_sign_ops to simplify the first argument.
(fold_builtin_pow): Use fold_strip_sign_ops to simplify the
first argument when the second argument is an even integer
constant, but only with -funsafe_math_optimizations.
(fold_builtin_1): Update call to fold_builtin_copysign.
* gcc.dg/builtins-48.c: New test case.
* gcc.dg/builtins-49.c: New test case.
* gcc.dg/builtins-50.c: New test case.
* gcc.dg/builtins-51.c: New test case.
From-SVN: r94779
Diffstat (limited to 'gcc/tree.h')
| -rw-r--r-- | gcc/tree.h | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -3527,7 +3527,8 @@ extern tree fold_binary_to_constant (enum tree_code, tree, tree, tree); extern tree fold_read_from_constant_string (tree); extern tree int_const_binop (enum tree_code, tree, tree, int); extern tree build_fold_addr_expr (tree); -tree fold_build_cleanup_point_expr (tree type, tree expr); +extern tree fold_build_cleanup_point_expr (tree type, tree expr); +extern tree fold_strip_sign_ops (tree); extern tree build_fold_addr_expr_with_type (tree, tree); extern tree build_fold_indirect_ref (tree); extern tree constant_boolean_node (int, tree); |