From: Pan Li <[email protected]>
This patch would like to add the doc for the Standard-Names
ustrunc and sstrunc, include both the scalar and vector integer
modes.
gcc/ChangeLog:
* doc/md.texi: Add Standard-Names ustrunc and sstrunc.
Signed-off-by: Pan Li <[email protected]>
---
gcc/doc/md.texi | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
index 7f4335e0aac..f116dede906 100644
--- a/gcc/doc/md.texi
+++ b/gcc/doc/md.texi
@@ -5543,6 +5543,18 @@ means of constraints requiring operands 1 and 0 to be
the same location.
@itemx @samp{and@var{m}3}, @samp{ior@var{m}3}, @samp{xor@var{m}3}
Similar, for other arithmetic operations.
+@cindex @code{ustrunc@var{m}@var{n}2} instruction pattern
+@item @samp{ustrunc@var{m}@var{n}2}
+Truncate the operand 1, and storing the result in operand 0. There will
+be saturation during the trunction. The result will be saturated to the
+maximal value of operand 0 type if there is overflow when truncation. The
+operand 1 must have mode @var{n}, and the operand 0 must have mode @var{m}.
+Both the scalar and vector integer modes are allowed.
+
+@cindex @code{sstrunc@var{m}@var{n}2} instruction pattern
+@item @samp{sstrunc@var{m}@var{n}2}
+Similar but for signed.
+
@cindex @code{andc@var{m}3} instruction pattern
@item @samp{andc@var{m}3}
Like @code{and@var{m}3}, but it uses bitwise-complement of operand 2
--
2.34.1
