From 6852d1d2990d2e2c72294bddbf1c4267d038241d Mon Sep 17 00:00:00 2001
From: Eyck-Alexander Jentzsch <alex@minres.com>
Date: Mon, 17 Feb 2025 16:16:39 +0100
Subject: [PATCH] adds  Vector Widening Integer Multiply-Add Instructions

---
 src/vm/vector_functions.hpp | 19 ++++++++++++++-----
 1 file changed, 14 insertions(+), 5 deletions(-)

diff --git a/src/vm/vector_functions.hpp b/src/vm/vector_functions.hpp
index c35740f..80da546 100644
--- a/src/vm/vector_functions.hpp
+++ b/src/vm/vector_functions.hpp
@@ -288,11 +288,20 @@ std::function<dest_elem_t(dest_elem_t, src2_elem_t, src1_elem_t)> get_funct(unsi
                 return (static_cast<twice_t<std::make_signed_t<src2_elem_t>>>(static_cast<std::make_signed_t<src2_elem_t>>(vs2)) *
                         static_cast<twice_t<std::make_signed_t<src2_elem_t>>>(static_cast<std::make_signed_t<src1_elem_t>>(vs1)));
             };
-            // case 0b111100: // VWMACCU
-            // case 0b111101: // VWMACC
-            // case 0b111110: // VWMACCUS
-            // case 0b111111: // VWMACCSU
-
+        case 0b111100: // VWMACCU
+            return [](dest_elem_t vd, src2_elem_t vs2, src1_elem_t vs1) { return vs1 * vs2 + vd; };
+        case 0b111101: // VWMACC
+            return [](dest_elem_t vd, src2_elem_t vs2, src1_elem_t vs1) {
+                return static_cast<std::make_signed_t<src1_elem_t>>(vs1) * static_cast<std::make_signed_t<src2_elem_t>>(vs2) + vd;
+            };
+        case 0b111110: // VWMACCUS
+            return [](dest_elem_t vd, src2_elem_t vs2, src1_elem_t vs1) {
+                return vs1 * static_cast<std::make_signed_t<src2_elem_t>>(vs2) + vd;
+            };
+        case 0b111111: // VWMACCSU
+            return [](dest_elem_t vd, src2_elem_t vs2, src1_elem_t vs1) {
+                return static_cast<std::make_signed_t<src1_elem_t>>(vs1) * vs2 + vd;
+            };
         default:
             throw new std::runtime_error("Uknown funct6 in get_funct");
         }