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| author | Roger Sayle <roger@eyesopen.com> | 2003-08-01 00:36:53 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2003-08-01 00:36:53 +0000 |
| commit | 2598550fa6d3583ce066a9aaf5abfa4acd186077 (patch) | |
| tree | a842e3f3e11953156cef321cf6510aeed77635b1 /libjava/java/io/ObjectOutputStream.java | |
| parent | e3da5a9a50524344c9b80ee1b8f2a8639493dd46 (diff) | |
| download | gcc-2598550fa6d3583ce066a9aaf5abfa4acd186077.zip gcc-2598550fa6d3583ce066a9aaf5abfa4acd186077.tar.gz gcc-2598550fa6d3583ce066a9aaf5abfa4acd186077.tar.bz2 | |
fold-const.c (fold <MULT_EXPR>): Optimize both x*pow(x,c) and pow(x,c)*x as pow(x,c+1) for constant values c.
* fold-const.c (fold <MULT_EXPR>): Optimize both x*pow(x,c) and
pow(x,c)*x as pow(x,c+1) for constant values c. Optimize x*x
as pow(x,2.0) when the latter will be expanded back into x*x.
(fold <RDIV_EXPR>): Optimize pow(x,c)/x as pow(x,c-1).
* builtins.c (expand_builtin_pow): Ignore flag_errno_math as
pow can never set errno when used with an integer exponent.
Always use expand_powi when exponent is -1, 0, 1 or 2.
(fold_builtin): Don't rewrite pow(x,2.0) as x*x nor pow(x,-2.0)
as 1.0/(x*x). This avoids unbounded recursion as we now prefer
the pow forms of these expressions.
* gcc.dg/builtins-27.c: New test case.
From-SVN: r70030
Diffstat (limited to 'libjava/java/io/ObjectOutputStream.java')
0 files changed, 0 insertions, 0 deletions