Index: include/clang/Basic/BuiltinsPPC.def
===================================================================
--- include/clang/Basic/BuiltinsPPC.def
+++ include/clang/Basic/BuiltinsPPC.def
@@ -430,6 +430,7 @@
 BUILTIN(__builtin_mulf128_round_to_odd, "LLdLLdLLd", "")
 BUILTIN(__builtin_divf128_round_to_odd, "LLdLLdLLd", "")
 BUILTIN(__builtin_fmaf128_round_to_odd, "LLdLLdLLdLLd", "")
+BUILTIN(__builtin_truncf128_round_to_odd, "dLLd", "")
 
 // HTM builtins
 BUILTIN(__builtin_tbegin, "UiUIi", "")
Index: test/CodeGen/builtins-ppc-p9-f128.c
===================================================================
--- test/CodeGen/builtins-ppc-p9-f128.c
+++ test/CodeGen/builtins-ppc-p9-f128.c
@@ -42,4 +42,9 @@
 // CHECK-NEXT: ret fp128
 }
 
+double testTruncOdd() {
+  return __builtin_truncf128_round_to_odd(A);
+// CHECK: @llvm.ppc.truncf128.round.to.odd(fp128
+// CHECK-NEXT: ret double
+}