diff options
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/extend.texi | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index d9b7a540cbd..768751f58a1 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -10869,6 +10869,7 @@ in the Cilk Plus language manual which can be found at @cindex built-in functions @findex __builtin_alloca @findex __builtin_alloca_with_align +@findex __builtin_alloca_with_align_and_max @findex __builtin_call_with_static_chain @findex __builtin_fpclassify @findex __builtin_isfinite @@ -11516,6 +11517,16 @@ an extension. @xref{Variable Length}, for details. @end deftypefn +@deftypefn {Built-in Function} void *__builtin_alloca_with_align_and_max (size_t size, size_t alignment, size_t max_size) +Similar to @code{__builtin_alloca_with_align} but takes an extra argument +specifying an upper bound for @var{size} in case its value cannot be computed +at compile time, for use by @option{-fstack-usage}, @option{-Wstack-usage} +and @option{-Walloca-larger-than}. @var{max_size} must be a constant integer +expression, it has no effect on code generation and no attempt is made to +check its compatibility with @var{size}. + +@end deftypefn + @deftypefn {Built-in Function} int __builtin_types_compatible_p (@var{type1}, @var{type2}) You can use the built-in function @code{__builtin_types_compatible_p} to |