diff --git a/clang/lib/Basic/Targets/OSTargets.h b/clang/lib/Basic/Targets/OSTargets.h
--- a/clang/lib/Basic/Targets/OSTargets.h
+++ b/clang/lib/Basic/Targets/OSTargets.h
@@ -743,7 +743,6 @@
 
   // AIX sets FLT_EVAL_METHOD to be 1.
   unsigned getFloatEvalMethod() const override { return 1; }
-  bool hasInt128Type() const override { return false; }
 
   bool defaultsToAIXPowerAlignment() const override { return true; }
 };
diff --git a/clang/test/Driver/types.c b/clang/test/Driver/types.c
--- a/clang/test/Driver/types.c
+++ b/clang/test/Driver/types.c
@@ -12,8 +12,8 @@
 // RUN: not %clang -c --target=powerpc-ibm-aix -fsyntax-only %s \
 // RUN: 2>&1 | FileCheck %s
 
-// RUN: not %clang -c --target=powerpc64-ibm-aix -fsyntax-only %s \
-// RUN: 2>&1 | FileCheck %s
+// RUN: %clang -c --target=powerpc64-ibm-aix -fsyntax-only %s \
+// RUN: 2>&1
 
 void a() {
   __int128_t s;
diff --git a/llvm/test/CodeGen/PowerPC/int128_ldst.ll b/llvm/test/CodeGen/PowerPC/int128_ldst.ll
--- a/llvm/test/CodeGen/PowerPC/int128_ldst.ll
+++ b/llvm/test/CodeGen/PowerPC/int128_ldst.ll
@@ -17,6 +17,9 @@
 ; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu \
 ; RUN:   -mcpu=pwr8  \
 ; RUN:   < %s | FileCheck %s --check-prefixes=CHECK,CHECK-PREP10,CHECK-P8
+; RUN: llc -verify-machineinstrs -mtriple=powerpc64-ibm-aix-xcoff \
+; RUN:   -mcpu=pwr8  \
+; RUN:   < %s | FileCheck %s --check-prefixes=CHECK,CHECK-PREP10,CHECK-P8
 
 ; Function Attrs: norecurse nounwind readonly uwtable willreturn
 define dso_local i128 @ld_0___int128___int128(i64 %ptr) {