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-rw-r--r--gcc/doc/extend.texi16
1 files changed, 16 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index f7b30c7ead7..8c833d39fec 100644
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -17556,6 +17556,22 @@ Perform a 64-bit centrifuge operation, as if implemented by the Future
@code{cfuged} instruction.
@findex __builtin_cfuged
+@smallexample
+@exdent unsigned long long int
+@exdent __builtin_cntlzdm (unsigned long long int, unsigned long long int)
+@end smallexample
+Perform a 64-bit count leading zeros operation under mask, as if
+implemented by the future @code{cntlzdm} instruction.
+@findex __builtin_cntlzdm
+
+@smallexample
+@exdent unsigned long long int
+@exdent __builtin_cnttzdm (unsigned long long int, unsigned long long int)
+@end smallexample
+Perform a 64-bit count trailing zeros operation under mask, as if
+implemented by the future @code{cnttzdm} instruction.
+@findex __builtin_cnttzdm
+
@node PowerPC AltiVec/VSX Built-in Functions
@subsection PowerPC AltiVec/VSX Built-in Functions