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ruby.h: ASSUME

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* include/ruby/ruby.h (ASSUME): hint for optimization, the
  expression is assumed to be true always.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51342 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2015-07-22 11:27:46 +00:00
parent c44360f623
commit 4c4d0389f5
2 changed files with 9 additions and 1 deletions
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9
include/ruby/ruby.h
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@ -41,8 +41,15 @@ extern "C" {
#ifndef NOINLINE
# define NOINLINE(x) x
#endif
#ifndef ASSUME
# ifdef UNREACHABLE
# define ASSUME(x) (LIKELY(!!(x)) ? (void)0 : UNREACHABLE)
# else
# define ASSUME(x) ((void)0)
# endif
#endif
#ifndef UNREACHABLE
# define UNREACHABLE /* unreachable */
# define UNREACHABLE ((void)0) /* unreachable */
#endif
#ifdef __GNUC__