+2008-02-14 Jesper Nilsson <jesper.nilsson@axis.com>
+
+ * doc/md.texi (clz, ctz): Add reference.
+ * doc/rtl.texi (clz, ctz): Likewise.
+
2008-02-13 Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
PR other/35148
@cindex @code{clz@var{m}2} instruction pattern
@item @samp{clz@var{m}2}
Store into operand 0 the number of leading 0-bits in @var{x}, starting
-at the most significant bit position. If @var{x} is 0, the result is
-undefined. @var{m} is the mode of operand 0; operand 1's mode is
+at the most significant bit position. If @var{x} is 0, the
+@code{CLZ_DEFINED_VALUE_AT_ZERO} (@pxref{Misc}) macro defines if
+the result is undefined or has a useful value.
+@var{m} is the mode of operand 0; operand 1's mode is
specified by the instruction pattern, and the compiler will convert the
operand to that mode before generating the instruction.
@cindex @code{ctz@var{m}2} instruction pattern
@item @samp{ctz@var{m}2}
Store into operand 0 the number of trailing 0-bits in @var{x}, starting
-at the least significant bit position. If @var{x} is 0, the result is
-undefined. @var{m} is the mode of operand 0; operand 1's mode is
+at the least significant bit position. If @var{x} is 0, the
+@code{CTZ_DEFINED_VALUE_AT_ZERO} (@pxref{Misc}) macro defines if
+the result is undefined or has a useful value.
+@var{m} is the mode of operand 0; operand 1's mode is
specified by the instruction pattern, and the compiler will convert the
operand to that mode before generating the instruction.
Represents the number of leading 0-bits in @var{x}, represented as an
integer of mode @var{m}, starting at the most significant bit position.
If @var{x} is zero, the value is determined by
-@code{CLZ_DEFINED_VALUE_AT_ZERO}. Note that this is one of
+@code{CLZ_DEFINED_VALUE_AT_ZERO} (@pxref{Misc}). Note that this is one of
the few expressions that is not invariant under widening. The mode of
@var{x} will usually be an integer mode.
Represents the number of trailing 0-bits in @var{x}, represented as an
integer of mode @var{m}, starting at the least significant bit position.
If @var{x} is zero, the value is determined by
-@code{CTZ_DEFINED_VALUE_AT_ZERO}. Except for this case,
+@code{CTZ_DEFINED_VALUE_AT_ZERO} (@pxref{Misc}). Except for this case,
@code{ctz(x)} is equivalent to @code{ffs(@var{x}) - 1}. The mode of
@var{x} will usually be an integer mode.