[gcc r14-7073] [committed] Adding missing prototype for __clzhi2 to xstormy port

[Jeff Law]

https://gcc.gnu.org/g:9f7afa99c67f039e43019ebd08d14a7f01e2d89c

commit r14-7073-g9f7afa99c67f039e43019ebd08d14a7f01e2d89c
Author: Jeff Law <jlaw@ventanamicro.com>
Date:   Tue Jan 9 10:21:28 2024 -0700

    [committed] Adding missing prototype for __clzhi2 to xstormy port
    
    xstormy16 has failed since the c99 transition due to a missing prototype for
    __clzhi2 in the implementation of stormy16_count_leading_zeros.
    
    This fixes the missing prototype.  Pushed to the trunk.
    
    include/
            * longlong.h (__stormy16_count_leading_zeros): Add prototype for
            __clzhi2.

Diff:
---
 include/longlong.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/longlong.h b/include/longlong.h
index e4fe1d24144..b5dec95b7ed 100644
--- a/include/longlong.h
+++ b/include/longlong.h
@@ -1573,6 +1573,7 @@ extern UHItype __stormy16_count_leading_zeros (UHItype);
       for ((count) = 0, size = W_TYPE_SIZE; size; size -= 16)		\
 	{								\
 	  UHItype c;							\
+	  extern UHItype __clzhi2 (UHItype);				\
 									\
 	  c = __clzhi2 ((x) >> (size - 16));				\
 	  (count) += c;							\