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| author | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-06-10 13:05:54 +0000 |
|---|---|---|
| committer | sayle <sayle@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-06-10 13:05:54 +0000 |
| commit | a4a686a74a08f307e708701022bb65d50d05ac3f (patch) | |
| tree | c3bfed8bf44d2e144c58458d3cfa991de969b782 /ChangeLog | |
| parent | d150f981143084e491c7a91ae43b26a82906273c (diff) | |
| download | gcc-a4a686a74a08f307e708701022bb65d50d05ac3f.tar.gz | |
* builtins.c (fold_builtin): Optimize cos(-x) as cos(x).
* fold-const.c (fold <NEGATE_EXPR>): Convert -f(x) into f(-x)
when x is easily negated and f is sin, tan or atan.
(fold <MULT_EXPR>): Optimize tan(x)*cos(x) and cos(x)*tan(x) as
sin(x) with flag_unsafe_math_optimizations.
(fold <RDIV_EXPR>): With flag_unsafe_math_optimizations fold
sin(x)/cos(x) as tan(x) and cos(x)/sin(x) as 1.0/tan(x).
* gcc.dg/builtins-20.c: New test case.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@67701 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'ChangeLog')
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