Fix C Backend to generate code that works with Microsoft C for the benefit of

front ends that do not depend on the GCC runtime (someday...).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35441 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index eeefaa27e99f0495cc6b184a649172d94752acf9..05efa7da0640e9d2fb75229ebd93e509ee69d7b2 100644 (file)
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -1293,7 +1293,10 @@ static void generateCompilerSpecificCode(std::ostream& Out) {
       << "#define alloca(x) __builtin_alloca(x)\n"
       << "#elif defined(__FreeBSD__) || defined(__OpenBSD__)\n"
       << "#define alloca(x) __builtin_alloca(x)\n"
-      << "#elif !defined(_MSC_VER)\n"
+      << "#elif defined(_MSC_VER)\n"
+      << "#define inline\n"
+      << "#define alloca(x) _alloca(x)\n"
+      << "#else\n"
       << "#include <alloca.h>\n"
       << "#endif\n\n";