diff --git a/js/xpconnect/src/XPCWrappedNative.cpp b/js/xpconnect/src/XPCWrappedNative.cpp
--- a/js/xpconnect/src/XPCWrappedNative.cpp
+++ b/js/xpconnect/src/XPCWrappedNative.cpp
@@ -1157,6 +1157,10 @@
   return helper.get().Call();
 }
 
+#if (__GNUC__ && __linux__ && __PPC64__ && _LITTLE_ENDIAN)
+// Work around a compiler bug on ppc64le (bug 1512162).
+__attribute__ ((noinline,noclone))
+#endif
 bool CallMethodHelper::Call() {
   mCallContext.SetRetVal(JS::UndefinedValue());
 
@@ -1315,6 +1319,10 @@
   return true;
 }
 
+#if (__GNUC__ && __linux__ && __PPC64__ && _LITTLE_ENDIAN)
+// Work around a compiler bug on ppc64le (bug 1512162).
+__attribute__ ((noinline,noclone))
+#endif
 bool CallMethodHelper::GatherAndConvertResults() {
   // now we iterate through the native params to gather and convert results
   uint8_t paramCount = mMethodInfo->GetParamCount();