diff --git a/llvm/utils/update_mir_test_checks.py b/llvm/utils/update_mir_test_checks.py
--- a/llvm/utils/update_mir_test_checks.py
+++ b/llvm/utils/update_mir_test_checks.py
@@ -35,7 +35,7 @@
 VREG_RE = re.compile(r'(%[0-9]+)(?::[a-z0-9_]+)?(?:\([<>a-z0-9 ]+\))?')
 MI_FLAGS_STR= (
     r'(frame-setup |frame-destroy |nnan |ninf |nsz |arcp |contract |afn '
-    r'|reassoc |nuw |nsw |exact |fpexcept )*')
+    r'|reassoc |nuw |nsw |exact |nofpexcept |nomerge )*')
 VREG_DEF_RE = re.compile(
     r'^ *(?P<vregs>{0}(?:, {0})*) = '
     r'{1}(?P<opcode>[A-Zt][A-Za-z0-9_]+)'.format(VREG_RE.pattern, MI_FLAGS_STR))