aarch64: implement smsubl and umsubl

kristerw · Oct 20, 2024 · 753c329 · 753c329
1 parent 7ade0ff
commit 753c329
Showing 1 changed file with 23 additions and 0 deletions.
diff --git a/lib/read_aarch64.cpp b/lib/read_aarch64.cpp
@@ -129,6 +129,7 @@ struct Parser {
   void process_min_max(Op op);
   void process_mul_op(Op op);
   void process_maddl(Op op);
+  void process_msubl(Op op);
   void process_mull(Op op);
   void process_mulh(Op op);
   void process_abs();
@@ -1247,6 +1248,24 @@ void Parser::process_maddl(Op op)
   write_reg(dest, res);
 }
 
+void Parser::process_msubl(Op op)
+{
+  Inst *dest = get_reg(1);
+  get_comma(2);
+  Inst *arg1 = get_reg_value(3);
+  get_comma(4);
+  Inst *arg2 = get_reg_value(5);
+  get_comma(6);
+  Inst *arg3 = get_reg_value(7);
+  get_end_of_line(8);
+
+  arg1 = bb->build_inst(op, arg1, 64);
+  arg2 = bb->build_inst(op, arg2, 64);
+  Inst *res = bb->build_inst(Op::MUL, arg1, arg2);
+  res = bb->build_inst(Op::SUB, arg3, res);
+  write_reg(dest, res);
+}
+
 void Parser::process_mull(Op op)
 {
   Inst *dest = get_reg(1);
@@ -2207,12 +2226,16 @@ void Parser::parse_function()
     process_binary(Op::MUL);
   else if (name == "smaddl")
     process_maddl(Op::SEXT);
+  else if (name == "smsubl")
+    process_msubl(Op::SEXT);
   else if (name == "smull")
     process_mull(Op::SEXT);
   else if (name == "smulh")
     process_mulh(Op::SEXT);
   else if (name == "umaddl")
     process_maddl(Op::ZEXT);
+  else if (name == "umsubl")
+    process_msubl(Op::ZEXT);
   else if (name == "umull")
     process_mull(Op::ZEXT);
   else if (name == "umulh")