From 904e73aacfdc06d06595d1b73f867636506de97b Mon Sep 17 00:00:00 2001
From: Dmitry Selyutin <ghostmansd@gmail.com>
Date: Sun, 24 Jul 2022 21:19:10 +0300
Subject: [PATCH] ppc/svp64: introduce alias for 1<<%r3 predicate

---
 gas/config/tc-ppc-svp64.c | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/gas/config/tc-ppc-svp64.c b/gas/config/tc-ppc-svp64.c
index 4a072667d6d..b5e16bb9abb 100644
--- a/gas/config/tc-ppc-svp64.c
+++ b/gas/config/tc-ppc-svp64.c
@@ -101,6 +101,7 @@ enum svp64_predicate {
 static void
 svp64_operand (expressionS *exp)
 {
+  bool caret = false;
   bool vector = false;
   bool compat = false;
   char *origin = input_line_pointer;
@@ -116,6 +117,11 @@ svp64_operand (expressionS *exp)
       else
         ++input_line_pointer;
     }
+  else if (input_line_pointer[0] == '^')
+    {
+      caret = true;
+      ++input_line_pointer;
+    }
 
   if (!vector && !compat && !reg_names_p &&
       (input_line_pointer[0] != '%' || !ISALPHA (input_line_pointer[1])))
@@ -128,8 +134,22 @@ svp64_operand (expressionS *exp)
 
   if (exp->X_op == O_absent)
     input_line_pointer = origin;
-  else if (vector &&
-      ((exp->X_op == O_register) || (exp->X_op == O_constant)))
+  else if (exp->X_op == O_register)
+    {
+      if (caret)
+        {
+          if (exp->X_add_number == 3)
+            {
+              exp->X_op = O_predicate;
+              exp->X_add_number = SVP64_PREDICATE_1BIT_R3;
+            }
+          else
+            exp->X_op = O_illegal;
+        }
+      else if (vector)
+        exp->X_op = O_vector;
+    }
+  else if ((exp->X_op == O_constant) && vector)
     exp->X_op = O_vector;
 
   if (compat)
-- 
2.30.2