Add movl assertion to REGPARM2 tests

Author: winstonallo

tests/assembly-llvm/regparm-module-flag.rs

@@ -29,6 +29,7 @@ pub unsafe extern "C" fn entrypoint(len: usize, ptr: *mut c_void, val: i32) -> *
     // REGPARM1: calll memset
 
     // REGPARM2-LABEL: entrypoint
+    // REGPARM2: movl 16(%esp), %edx
     // REGPARM2: movl %e{{.*}}, (%esp)
     // REGPARM2: movl %e{{.*}}, %eax
     // REGPARM2: calll memset
@@ -53,6 +54,7 @@ pub unsafe extern "C" fn non_builtin_entrypoint(
     // REGPARM1: calll non_builtin_memset
 
     // REGPARM2-LABEL: non_builtin_entrypoint
+    // REGPARM2: movl 16(%esp), %edx
     // REGPARM2: movl %e{{.*}}, (%esp)
     // REGPARM2: movl %e{{.*}}, %eax
     // REGPARM2: calll non_builtin_memset