diff --git a/gcc/testsuite/gcc.dg/vect/costmodel/x86_64/costmodel-pr104582-2.c b/gcc/testsuite/gcc.dg/vect/costmodel/x86_64/costmodel-pr104582-2.c
index 7637cdb4a97..d060135d877 100644
--- a/gcc/testsuite/gcc.dg/vect/costmodel/x86_64/costmodel-pr104582-2.c
+++ b/gcc/testsuite/gcc.dg/vect/costmodel/x86_64/costmodel-pr104582-2.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-additional-options "-msse -fdump-tree-slp2-details" } */
+/* { dg-additional-options "-msse -mtune=generic -fdump-tree-slp2-details" } */
 
 struct S { unsigned long a, b; } s;
 
diff --git a/gcc/testsuite/gcc.target/i386/pr84101.c b/gcc/testsuite/gcc.target/i386/pr84101.c
index cf144894f9b..2c5a97308ca 100644
--- a/gcc/testsuite/gcc.target/i386/pr84101.c
+++ b/gcc/testsuite/gcc.target/i386/pr84101.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-O3 -fdump-tree-slp2-details" } */
+/* { dg-options "-O3 -mtune=generic -fdump-tree-slp2-details" } */
 
 typedef struct uint64_pair uint64_pair_t ;
 struct uint64_pair