diff --git a/llvm/unittests/tools/llvm-exegesis/X86/SubprocessMemoryTest.cpp b/llvm/unittests/tools/llvm-exegesis/X86/SubprocessMemoryTest.cpp
index 7c23e7b7e9c5a5..f61254ac74e140 100644
--- a/llvm/unittests/tools/llvm-exegesis/X86/SubprocessMemoryTest.cpp
+++ b/llvm/unittests/tools/llvm-exegesis/X86/SubprocessMemoryTest.cpp
@@ -24,7 +24,8 @@
 namespace llvm {
 namespace exegesis {
 
-#if defined(__linux__) && !defined(__ANDROID__)
+#if defined(__linux__) && !defined(__ANDROID__) &&                             \
+    !(defined(__powerpc__) || defined(__s390x__) || defined(__sparc__))
 
 // This needs to be updated anytime a test is added or removed from the test
 // suite.
@@ -77,20 +78,12 @@ class SubprocessMemoryTest : public X86TestBase {
 // memory calls not working in some cases, so they have been disabled.
 // TODO(boomanaiden154): Investigate and fix this issue on PPC.
 
-#if defined(__powerpc__) || defined(__s390x__)
-TEST_F(SubprocessMemoryTest, DISABLED_OneDefinition) {
-#else
 TEST_F(SubprocessMemoryTest, OneDefinition) {
-#endif
   testCommon({{"test1", {APInt(8, 0xff), 4096, 0}}}, 0);
   checkSharedMemoryDefinition(getSharedMemoryName(0, 0), 4096, {0xff});
 }
 
-#if defined(__powerpc__) || defined(__s390x__)
-TEST_F(SubprocessMemoryTest, DISABLED_MultipleDefinitions) {
-#else
 TEST_F(SubprocessMemoryTest, MultipleDefinitions) {
-#endif
   testCommon({{"test1", {APInt(8, 0xaa), 4096, 0}},
               {"test2", {APInt(8, 0xbb), 4096, 1}},
               {"test3", {APInt(8, 0xcc), 4096, 2}}},
@@ -100,11 +93,7 @@ TEST_F(SubprocessMemoryTest, MultipleDefinitions) {
   checkSharedMemoryDefinition(getSharedMemoryName(1, 2), 4096, {0xcc});
 }
 
-#if defined(__powerpc__) || defined(__s390x__)
-TEST_F(SubprocessMemoryTest, DISABLED_DefinitionFillsCompletely) {
-#else
 TEST_F(SubprocessMemoryTest, DefinitionFillsCompletely) {
-#endif
   testCommon({{"test1", {APInt(8, 0xaa), 4096, 0}},
               {"test2", {APInt(16, 0xbbbb), 4096, 1}},
               {"test3", {APInt(24, 0xcccccc), 4096, 2}}},
@@ -118,7 +107,7 @@ TEST_F(SubprocessMemoryTest, DefinitionFillsCompletely) {
 }
 
 // The following test is only supported on little endian systems.
-#if defined(__powerpc__) || defined(__s390x__) || __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
+#if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
 TEST_F(SubprocessMemoryTest, DISABLED_DefinitionEndTruncation) {
 #else
 TEST_F(SubprocessMemoryTest, DefinitionEndTruncation) {
@@ -150,7 +139,7 @@ TEST_F(SubprocessMemoryTest, DefinitionEndTruncation) {
   checkSharedMemoryDefinition(getSharedMemoryName(3, 0), 4096, Test1Expected);
 }
 
-#endif // defined(__linux__) && !defined(__ANDROID__)
+#endif // __linux__ && !__ANDROID__ && !(__powerpc__ || __s390x__ || __sparc__)
 
 } // namespace exegesis
 } // namespace llvm