[Mono] Fix Vector128 divide by scalar (#78784)

* Fix divide by scalar

* Add missing vector/vector and vector*vector case

diff --git a/src/mono/mono/mini/simd-intrinsics.c b/src/mono/mono/mini/simd-intrinsics.c
index c8208b3..aa5b040 100644 (file)
--- a/src/mono/mono/mini/simd-intrinsics.c
+++ b/src/mono/mono/mini/simd-intrinsics.c
@@ -302,6 +302,20 @@ emit_simd_ins_for_binary_op (MonoCompile *cfg, MonoClass *klass, MonoMethodSigna
                                break;
                        case SN_Divide:
                        case SN_op_Division:
+                               if (strcmp ("Vector4", m_class_get_name (klass)) && strcmp ("Vector2", m_class_get_name (klass))) {
+                                       if ((fsig->params [0]->type == MONO_TYPE_GENERICINST) && (fsig->params [1]->type != MONO_TYPE_GENERICINST)) {
+                                               MonoInst* ins = emit_simd_ins (cfg, klass, OP_CREATE_SCALAR_UNSAFE, args [1]->dreg, -1);
+                                               ins->inst_c1 = arg_type;
+                                               ins = emit_simd_ins (cfg, klass, OP_XBINOP_BYSCALAR, args [0]->dreg, ins->dreg);
+                                               ins->inst_c0 = OP_FDIV;
+                                               return ins;
+                                       } else if ((fsig->params [0]->type == MONO_TYPE_GENERICINST) && (fsig->params [1]->type == MONO_TYPE_GENERICINST)) {
+                                               instc0 = OP_FDIV;
+                                               break;
+                                       } else {
+                                               return NULL;
+                                       }
+                               }
                                instc0 = OP_FDIV;
                                break;
                        case SN_Max:
@@ -325,6 +339,11 @@ emit_simd_ins_for_binary_op (MonoCompile *cfg, MonoClass *klass, MonoMethodSigna
                                                ins = emit_simd_ins (cfg, klass, OP_XBINOP_BYSCALAR, ins->dreg, args [1]->dreg);
                                                ins->inst_c0 = OP_FMUL;
                                                return ins;
+                                       } else if ((fsig->params [0]->type == MONO_TYPE_GENERICINST) && (fsig->params [1]->type == MONO_TYPE_GENERICINST)) {
+                                               instc0 = OP_FMUL;
+                                               break;
+                                       } else {
+                                               return NULL;
                                        }
                                }
                                instc0 = OP_FMUL;