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| author | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-07-15 01:49:32 +0000 |
|---|---|---|
| committer | akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2013-07-15 01:49:32 +0000 |
| commit | 150b2655024892d48ca6af5f70731e2ab68a491f (patch) | |
| tree | c15501a03f21e41fb5ab837d7dc1bb4bf10f2fec /configure.in | |
| parent | 0e15aec62b15627a209cbfbae5d1f20391d74b4b (diff) | |
| download | ruby-150b2655024892d48ca6af5f70731e2ab68a491f.tar.gz | |
* bignum.c (nlz16): Use __builtin_clz if possible.
(nlz32): Use __builtin_clz or __builtin_clzl if possible.
(nlz64): Use __builtin_clzl or __builtin_clzll if possible.
(nlz128): Use __builtin_clzll if possible.
* configure.in: Check __builtin_clz, __builtin_clzl and
__builtin_clzll.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41976 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.in b/configure.in index 739d337072..48184e23cf 100644 --- a/configure.in +++ b/configure.in @@ -1849,6 +1849,9 @@ if test "${AS_TR_SH(rb_cv_builtin_$1)}" != no; then fi]) RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap32, [__builtin_bswap32(0)]) RUBY_CHECK_BUILTIN_FUNC(__builtin_bswap64, [__builtin_bswap64(0)]) +RUBY_CHECK_BUILTIN_FUNC(__builtin_clz, [__builtin_clz(0)]) +RUBY_CHECK_BUILTIN_FUNC(__builtin_clzl, [__builtin_clzl(0)]) +RUBY_CHECK_BUILTIN_FUNC(__builtin_clzll, [__builtin_clzll(0)]) # Some platform neet -lrt for clock_gettime, but the other don't. if test x"$ac_cv_func_clock_gettime" != xyes; then |