1 files changed, 15 insertions, 0 deletions
diff --git a/lib/Target/AArch64/AArch64InstrFormats.td b/lib/Target/AArch64/AArch64InstrFormats.td
index 1060c64f7b5d..15d61cd1ad26 100644
--- a/lib/Target/AArch64/AArch64InstrFormats.td
+++ b/lib/Target/AArch64/AArch64InstrFormats.td
@@ -57,6 +57,14 @@ class EncodedI<string cstr, list<dag> pattern> : AArch64Inst<NormalFrm, cstr> {
   let Size = 4;
 }
 
+// Enum describing whether an instruction is
+// destructive in its first source operand.
+class DestructiveInstTypeEnum<bits<1> val> {
+  bits<1> Value = val;
+}
+def NotDestructive  : DestructiveInstTypeEnum<0>;
+def Destructive     : DestructiveInstTypeEnum<1>;
+
 // Normal instructions
 class I<dag oops, dag iops, string asm, string operands, string cstr,
         list<dag> pattern>
@@ -64,6 +72,13 @@ class I<dag oops, dag iops, string asm, string operands, string cstr,
   dag OutOperandList = oops;
   dag InOperandList  = iops;
   let AsmString      = !strconcat(asm, operands);
+
+  // Destructive operations (SVE)
+  DestructiveInstTypeEnum DestructiveInstType = NotDestructive;
+  ElementSizeEnum ElementSize = ElementSizeB;
+
+  let TSFlags{3} = DestructiveInstType.Value;
+  let TSFlags{2-0} = ElementSize.Value;
 }
 
 class TriOpFrag<dag res> : PatFrag<(ops node:$LHS, node:$MHS, node:$RHS), res>;