The new count leading signs is not implemented for HI:
builtin-bitops-1.c:(.text+0xd1e): undefined reference to `__clrsbhi2'
FAIL: gcc.c-torture/execute/builtin-bitops-1.c compilation, -O0
Extended clz/ctz support in longlong.h
With the patch testcase passes.
Johann
libgcc/
* config/avr/t-avr (intfuncs16): Add _clrsbXX2.
gcc/
* longlong.h (count_leading_zeros, count_trailing_zeros,
COUNT_LEADING_ZEROS_0): Define for target avr if W_TYPE_SIZE is 16
resp. 64.
Index: libgcc/config/avr/t-avr
===================================================================
--- libgcc/config/avr/t-avr (revision 175628)
+++ libgcc/config/avr/t-avr (working copy)
@@ -1,5 +1,5 @@
# Extra 16-bit integer functions.
-intfuncs16 = _absvXX2 _addvXX3 _subvXX3 _mulvXX3 _negvXX2
+intfuncs16 = _absvXX2 _addvXX3 _subvXX3 _mulvXX3 _negvXX2 _clrsbXX2
hiintfuncs16 = $(subst XX,hi,$(intfuncs16))
siintfuncs16 = $(subst XX,si,$(intfuncs16))
Index: gcc/longlong.h
===================================================================
--- gcc/longlong.h (revision 175628)
+++ gcc/longlong.h (working copy)
@@ -250,11 +250,27 @@ UDItype __umulsidi3 (USItype, USItype);
#define COUNT_LEADING_ZEROS_0 32
#endif
-#if defined (__AVR__) && W_TYPE_SIZE == 32
+#if defined (__AVR__)
+
+#if W_TYPE_SIZE == 16
+#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clz (X))
+#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctz (X))
+#define COUNT_LEADING_ZEROS_0 16
+#endif /* W_TYPE_SIZE == 16 */
+
+#if W_TYPE_SIZE == 32
#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clzl (X))
#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzl (X))
#define COUNT_LEADING_ZEROS_0 32
-#endif /* defined (__AVR__) && W_TYPE_SIZE == 32 */
+#endif /* W_TYPE_SIZE == 32 */
+
+#if W_TYPE_SIZE == 64
+#define count_leading_zeros(COUNT,X) ((COUNT) = __builtin_clzll (X))
+#define count_trailing_zeros(COUNT,X) ((COUNT) = __builtin_ctzll (X))
+#define COUNT_LEADING_ZEROS_0 64
+#endif /* W_TYPE_SIZE == 64 */
+
+#endif /* defined (__AVR__) */
#if defined (__CRIS__) && __CRIS_arch_version >= 3
#define count_leading_zeros(COUNT, X) ((COUNT) = __builtin_clz (X))
