[libfuzzer][MSVC] Make calls to builtin functions work with MSVC
Summary:
Replace calls to builtin functions with macros or functions that call the
Windows-equivalents when targeting windows and call the original
builtin functions everywhere else.
This change makes more parts of libFuzzer buildable with MSVC.
Reviewers: vitalybuka
Reviewed By: vitalybuka
Subscribers: mgorny, rnk, thakis
Differential Revision: https://reviews.llvm.org/D56439
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk/lib/fuzzer@350766 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/FuzzerUtil.h b/FuzzerUtil.h
index 8c5c57c..d2f1d5d 100644
--- a/FuzzerUtil.h
+++ b/FuzzerUtil.h
@@ -12,8 +12,10 @@
#ifndef LLVM_FUZZER_UTIL_H
#define LLVM_FUZZER_UTIL_H
-#include "FuzzerDefs.h"
+#include "FuzzerBuiltins.h"
+#include "FuzzerBuiltinsMsvc.h"
#include "FuzzerCommand.h"
+#include "FuzzerDefs.h"
namespace fuzzer {
@@ -84,7 +86,7 @@
size_t SimpleFastHash(const uint8_t *Data, size_t Size);
-inline uint32_t Log(uint32_t X) { return 32 - __builtin_clz(X) - 1; }
+inline uint32_t Log(uint32_t X) { return 32 - Clz(X) - 1; }
} // namespace fuzzer