[mono][interp] Fix conv.r.un from r4 (#65697)

diff --git a/src/mono/mono/mini/interp/transform.c b/src/mono/mono/mini/interp/transform.c
index f1f6286..6769635 100644 (file)
--- a/src/mono/mono/mini/interp/transform.c
+++ b/src/mono/mono/mini/interp/transform.c
@@ -5905,6 +5905,9 @@ generate_code (TransformData *td, MonoMethod *method, MonoMethodHeader *header,
                }
                case CEE_CONV_R_UN:
                        switch (td->sp [-1].type) {
+                       case STACK_TYPE_R4:
+                               interp_add_conv (td, td->sp - 1, NULL, STACK_TYPE_R8, MINT_CONV_R8_R4);
+                               break;
                        case STACK_TYPE_R8:
                                break;
                        case STACK_TYPE_I8: