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Unified Diff: include/llvm/Analysis/NaCl/PNaClAllowedIntrinsics.h

Issue 939073008: Rebased PNaCl localmods in LLVM to 223109 (Closed)
Patch Set: undo localmod Created 5 years, 10 months ago
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Index: include/llvm/Analysis/NaCl/PNaClAllowedIntrinsics.h
diff --git a/include/llvm/Analysis/NaCl/PNaClAllowedIntrinsics.h b/include/llvm/Analysis/NaCl/PNaClAllowedIntrinsics.h
new file mode 100644
index 0000000000000000000000000000000000000000..ecb99ef818a49bf9160c5ce69a38e3495a5857b4
--- /dev/null
+++ b/include/llvm/Analysis/NaCl/PNaClAllowedIntrinsics.h
@@ -0,0 +1,71 @@
+//===- PNaClAllowedIntrinsics.h - Set of allowed intrinsics -----*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Declares class that holds set of allowed PNaCl intrinsics.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_ANALYSIS_NACL_PNACLALLOWEDINTRINSICS_H
+#define LLVM_ANALYSIS_NACL_PNACLALLOWEDINTRINSICS_H
+
+#include "llvm/ADT/StringMap.h"
+#include "llvm/IR/Intrinsics.h"
+
+namespace llvm {
+
+class LLVMContext;
+class Function;
+class FunctionType;
+
+// Holds the set of allowed instrinsics.
+class PNaClAllowedIntrinsics {
+ PNaClAllowedIntrinsics(const PNaClAllowedIntrinsics&) LLVM_DELETED_FUNCTION;
+ void operator=(const PNaClAllowedIntrinsics&) LLVM_DELETED_FUNCTION;
+public:
+ PNaClAllowedIntrinsics(LLVMContext *Context);
+
+ // Checks if there is an allowable PNaCl intrinsic function with the
+ // given name and type signature.
+ bool isAllowed(const std::string &FcnName, const FunctionType *FcnType) {
+ return isIntrinsicName(FcnName) && FcnType == getIntrinsicType(FcnName);
+ }
+ // Checks if Func is an allowed PNaCl intrinsic function. Note:
+ // This function also allows debugging intrinsics if
+ // PNaClABIAllowDebugMetadata is true.
+ bool isAllowed(const Function *Func);
+
+ // Returns the type signature for the Name'd intrinsic, if entered
+ // via a call to AddIntrinsic. Returns 0 otherwise (implying we
+ // don't know the expected type signature).
+ FunctionType *getIntrinsicType(const std::string &Name) {
+ return isIntrinsicName(Name) ? TypeMap[Name] : 0;
+ }
+
+private:
+ LLVMContext *Context;
+ // Maps from an allowed intrinsic's name to its type.
+ StringMap<FunctionType *> TypeMap;
+
+ // Tys is an array of type parameters for the intrinsic. This
+ // defaults to an empty array.
+ void addIntrinsic(Intrinsic::ID ID,
+ ArrayRef<Type *> Tys = ArrayRef<Type*>());
+
+ // Returns true if a valid PNaCl intrinsic name.
+ bool isIntrinsicName(const std::string &Name) {
+ return TypeMap.count(Name) == 1;
+ }
+
+ // Returns true if intrinsic ID is allowed as a PNaCl intrinsic.
+ bool isAllowedIntrinsicID(unsigned ID);
+};
+
+}
+
+#endif // LLVM_ANALYSIS_NACL_PNACLALLOWEDINTRINSICS_H
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