[gas][aarch64][SVE2] Fix pmull{t,b} requirement on SVE2-AES

[thirdparty/binutils-gdb.git] / opcodes / aarch64-dis.c

diff --git a/opcodes/aarch64-dis.c b/opcodes/aarch64-dis.c
index 6b53a2c3228aea3117e0f45450dc9f192eedd6de..7ae844a601c409b23f0a537355aec6b54f7ef385 100644 (file)
--- a/opcodes/aarch64-dis.c
+++ b/opcodes/aarch64-dis.c
@@ -2822,14 +2822,11 @@ aarch64_decode_variant_using_iclass (aarch64_inst *inst)
       variant = i - 1;
       break;
 
-    case sve_size_013:
-      i = extract_field (FLD_size, inst->value, 0);
-      if (i == 2)
-       return FALSE;
-      if (i == 3)
-       variant = 2;
-      else
-       variant = i;
+    case sve_size_13:
+      /* Ignore low bit of this field since that is set in the opcode for
+        instructions of this iclass.  */
+      i = (extract_field (FLD_size, inst->value, 0) & 2);
+      variant = (i >> 1);
       break;
 
     case sve_shift_tsz_bhsd: