diff --git a/flang/test/Fir/global-initialization.fir b/flang/test/Fir/global-initialization.fir
index 638a39759ca90..1cb4e94bada4d 100644
--- a/flang/test/Fir/global-initialization.fir
+++ b/flang/test/Fir/global-initialization.fir
@@ -1,3 +1,4 @@
+// RUN: fir-opt --fir-to-llvm-ir %s | FileCheck %s
 // RUN: tco --fir-to-llvm-ir %s | FileCheck %s
 
 fir.global internal @_QEmask : !fir.array<32xi32> {
diff --git a/flang/test/Fir/rebox-susbtring.fir b/flang/test/Fir/rebox-susbtring.fir
index e685c44d1cf79..382c54e1058e2 100644
--- a/flang/test/Fir/rebox-susbtring.fir
+++ b/flang/test/Fir/rebox-susbtring.fir
@@ -1,5 +1,6 @@
 // Test translation to llvm IR of fir.rebox with substring array sections.
 
+// RUN: fir-opt -o - -cg-rewrite --fir-to-llvm-ir -cse %s | FileCheck %s
 // RUN: tco -o - -cg-rewrite --fir-to-llvm-ir -cse %s | FileCheck %s
 
 // Test a fir.rebox with a substring on a character array with constant