[libFuzzer] use __attribute__((target("popcnt"))) only on x86_64

llvm-svn: 279601
diff --git a/llvm/lib/Fuzzer/FuzzerTraceState.cpp b/llvm/lib/Fuzzer/FuzzerTraceState.cpp
index 4192ceb..f1307d7 100644
--- a/llvm/lib/Fuzzer/FuzzerTraceState.cpp
+++ b/llvm/lib/Fuzzer/FuzzerTraceState.cpp
@@ -574,7 +574,7 @@
   VP.AddValue((PC & 4095) | (LastSameByte << 12));
 }
 
-__attribute__((target("popcnt")))
+ATTRIBUTE_TARGET_POPCNT
 static void AddValueForCmp(void *PCptr, uint64_t Arg1, uint64_t Arg2) {
   if (Arg1 == Arg2)
     return;