diff --git a/clang/test/CodeGen/adc-builtins.c b/clang/test/CodeGen/adc-builtins.c
index 0d8d6fa03476..d41fa8f446e6 100644
--- a/clang/test/CodeGen/adc-builtins.c
+++ b/clang/test/CodeGen/adc-builtins.c
@@ -1,6 +1,4 @@
-// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
-
-#define __MM_MALLOC_H
+// RUN: %clang_cc1 -ffreestanding -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
 
 #include <x86intrin.h>
 
diff --git a/clang/test/CodeGen/avx512ifmavl-builtins.c b/clang/test/CodeGen/avx512ifmavl-builtins.c
index c59af0ec6d06..4aeec336ad94 100644
--- a/clang/test/CodeGen/avx512ifmavl-builtins.c
+++ b/clang/test/CodeGen/avx512ifmavl-builtins.c
@@ -1,6 +1,4 @@
-// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin -target-feature +avx512ifma -target-feature +avx512vl -emit-llvm -o - -Wall -Werror | FileCheck %s
-
-#define __MM_MALLOC_H
+// RUN: %clang_cc1 %s -ffreestanding -triple=x86_64-apple-darwin -target-feature +avx512ifma -target-feature +avx512vl -emit-llvm -o - -Wall -Werror | FileCheck %s
 
 #include <immintrin.h>
 
diff --git a/clang/test/CodeGen/builtin-clflushopt.c b/clang/test/CodeGen/builtin-clflushopt.c
index 93861164c4a8..f82ac4638f40 100644
--- a/clang/test/CodeGen/builtin-clflushopt.c
+++ b/clang/test/CodeGen/builtin-clflushopt.c
@@ -1,7 +1,7 @@
-// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin -target-feature +clflushopt  -emit-llvm -o - -Wall -Werror | FileCheck %s
-#define __MM_MALLOC_H
+// RUN: %clang_cc1 %s -ffreestanding -triple=x86_64-apple-darwin -target-feature +clflushopt  -emit-llvm -o - -Wall -Werror | FileCheck %s
+
+#include <x86intrin.h>
 
-#include <immintrin.h>
 void test_mm_clflushopt(char * __m) {
   //CHECK-LABEL: @test_mm_clflushopt
   //CHECK: @llvm.x86.clflushopt
diff --git a/clang/test/CodeGen/builtin-clzero.c b/clang/test/CodeGen/builtin-clzero.c
index c9960ced12ec..f9ecb9ddb526 100644
--- a/clang/test/CodeGen/builtin-clzero.c
+++ b/clang/test/CodeGen/builtin-clzero.c
@@ -1,7 +1,7 @@
-// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin -target-feature +clzero  -emit-llvm -o - -Wall -Werror | FileCheck %s
-#define __MM_MALLOC_H
+// RUN: %clang_cc1 %s -ffreestanding -triple=x86_64-apple-darwin -target-feature +clzero  -emit-llvm -o - -Wall -Werror | FileCheck %s
 
 #include <x86intrin.h>
+
 void test_mm_clzero(void * __m) {
   //CHECK-LABEL: @test_mm_clzero
   //CHECK: @llvm.x86.clzero