1 files changed, 19 insertions, 0 deletions
diff --git a/utils/TableGen/IntrinsicEmitter.cpp b/utils/TableGen/IntrinsicEmitter.cpp
index 417aca7..d7a9051 100644
--- a/utils/TableGen/IntrinsicEmitter.cpp
+++ b/utils/TableGen/IntrinsicEmitter.cpp
@@ -30,6 +30,8 @@ void IntrinsicEmitter::run(raw_ostream &OS) {
   if (TargetOnly && !Ints.empty())
     TargetPrefix = Ints[0].TargetPrefix;
 
+  EmitPrefix(OS);
+
   // Emit the enum information.
   EmitEnumInfo(Ints, OS);
 
@@ -59,6 +61,23 @@ void IntrinsicEmitter::run(raw_ostream &OS) {
 
   // Emit code to translate GCC builtins into LLVM intrinsics.
   EmitIntrinsicToGCCBuiltinMap(Ints, OS);
+
+  EmitSuffix(OS);
+}
+
+void IntrinsicEmitter::EmitPrefix(raw_ostream &OS) {
+  OS << "// VisualStudio defines setjmp as _setjmp\n"
+        "#if defined(_MSC_VER) && defined(setjmp)\n"
+        "#define setjmp_undefined_for_visual_studio\n"
+        "#undef setjmp\n"
+        "#endif\n\n";
+}
+
+void IntrinsicEmitter::EmitSuffix(raw_ostream &OS) {
+  OS << "#if defined(_MSC_VER) && defined(setjmp_undefined_for_visual_studio)\n"
+        "// let's return it to _setjmp state\n"
+        "#define setjmp _setjmp\n"
+        "#endif\n\n";
 }
 
 void IntrinsicEmitter::EmitEnumInfo(const std::vector<CodeGenIntrinsic> &Ints,