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Diffstat (limited to 'gcc/doc/extend.texi')
| -rw-r--r-- | gcc/doc/extend.texi | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 883d9b3..4578925 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -18343,6 +18343,13 @@ All of them generate the machine instruction that is part of the name. void __builtin_i32_clzero (void *) @end smallexample +The following built-in functions are available when @option{-mpku} is used. +They generate reads and writes to PKRU. +@smallexample +void __builtin_ia32_wrpkru (unsigned int) +unsigned int __builtin_ia32_rdpkru () +@end smallexample + @node x86 transactional memory intrinsics @subsection x86 Transactional Memory Intrinsics |