Index: include/llvm-c/Core.h =================================================================== --- include/llvm-c/Core.h +++ include/llvm-c/Core.h @@ -2381,6 +2381,54 @@ */ unsigned LLVMGetIntrinsicID(LLVMValueRef Fn); +/** + * Create or insert the declaration of an intrinsic. For overloaded intrinsics, + * parameter types must be provided to uniquely identify an overload. + * + * @see llvm::Intrinsic::getDeclaration() + */ +LLVMValueRef LLVMGetIntrinsicDeclaration(LLVMModuleRef Mod, + unsigned ID, + LLVMTypeRef *ParamTypes, + size_t ParamCount); + +/** + * Retrieves the type of an intrinsic. For overloaded intrinsics, parameter + * types must be provided to uniquely identify an overload. + * + * @see llvm::Intrinsic::getType() + */ +LLVMTypeRef LLVMIntrinsicGetType(LLVMContextRef Ctx, unsigned ID, + LLVMTypeRef *ParamTypes, size_t ParamCount); + +/** + * Retrieves the name of an intrinsic. + * + * @see llvm::Intrinsic::getName() + */ +const char *LLVMIntrinsicGetName(unsigned ID, size_t *NameLength); + +/** + * Copies the name of an overloaded intrinsic identified by a given list of + * parameter types. + * + * Unlike LLVMIntrinsicGetName, the caller is responsible for freeing the + * returned string. + * + * @see llvm::Intrinsic::getName() + */ +const char *LLVMIntrinsicCopyOverloadedName(unsigned ID, + LLVMTypeRef *ParamTypes, + size_t ParamCount, + size_t *NameLength); + +/** + * Obtain if the intrinsic identified by the given ID is overloaded. + * + * @see llvm::Intrinsic::isOverloaded() + */ +LLVMBool LLVMIntrinsicIsOverloaded(unsigned ID); + /** * Obtain the calling function of a function. * Index: lib/IR/Core.cpp =================================================================== --- lib/IR/Core.cpp +++ lib/IR/Core.cpp @@ -2280,6 +2280,50 @@ return 0; } +static Intrinsic::ID llvm_map_to_intrinsic_id(unsigned ID) { + assert(ID < llvm::Intrinsic::num_intrinsics && "Intrinsic ID out of range"); + return llvm::Intrinsic::ID(ID); +} + +LLVMValueRef LLVMGetIntrinsicDeclaration(LLVMModuleRef Mod, + unsigned ID, + LLVMTypeRef *ParamTypes, + size_t ParamCount) { + ArrayRef Tys(unwrap(ParamTypes), ParamCount); + auto IID = llvm_map_to_intrinsic_id(ID); + return wrap(llvm::Intrinsic::getDeclaration(unwrap(Mod), IID, Tys)); +} + +const char *LLVMIntrinsicGetName(unsigned ID, size_t *NameLength) { + auto IID = llvm_map_to_intrinsic_id(ID); + auto Str = llvm::Intrinsic::getName(IID); + *NameLength = Str.size(); + return Str.data(); +} + +LLVMTypeRef LLVMIntrinsicGetType(LLVMContextRef Ctx, unsigned ID, + LLVMTypeRef *ParamTypes, size_t ParamCount) { + auto IID = llvm_map_to_intrinsic_id(ID); + ArrayRef Tys(unwrap(ParamTypes), ParamCount); + return wrap(llvm::Intrinsic::getType(*unwrap(Ctx), IID, Tys)); +} + +const char *LLVMIntrinsicCopyOverloadedName(unsigned ID, + LLVMTypeRef *ParamTypes, + size_t ParamCount, + size_t *NameLength) { + auto IID = llvm_map_to_intrinsic_id(ID); + ArrayRef Tys(unwrap(ParamTypes), ParamCount); + auto Str = llvm::Intrinsic::getName(IID, Tys); + *NameLength = Str.length(); + return strndup(Str.c_str(), Str.length()); +} + +LLVMBool LLVMIntrinsicIsOverloaded(unsigned ID) { + auto IID = llvm_map_to_intrinsic_id(ID); + return llvm::Intrinsic::isOverloaded(IID); +} + unsigned LLVMGetFunctionCallConv(LLVMValueRef Fn) { return unwrap(Fn)->getCallingConv(); } Index: test/Bindings/llvm-c/echo.ll =================================================================== --- test/Bindings/llvm-c/echo.ll +++ test/Bindings/llvm-c/echo.ll @@ -170,6 +170,22 @@ ret void, !dbg !7 } +declare i8* @llvm.stacksave() +declare void @llvm.stackrestore(i8*) +declare void @llvm.lifetime.start.p0i8(i64, i8*) +declare void @llvm.lifetime.end.p0i8(i64, i8*) + +define void @test_intrinsics() { +entry: + %sp = call i8* @llvm.stacksave() + %x = alloca i32 + %0 = bitcast i32* %x to i8* + call void @llvm.lifetime.start.p0i8(i64 4, i8* %0) + call void @llvm.lifetime.end.p0i8(i64 4, i8* %0) + call void @llvm.stackrestore(i8* %sp) + ret void +} + !llvm.dbg.cu = !{!0, !2} !llvm.module.flags = !{!3} Index: tools/llvm-c-test/echo.cpp =================================================================== --- tools/llvm-c-test/echo.cpp +++ tools/llvm-c-test/echo.cpp @@ -240,7 +240,17 @@ // Try function if (LLVMIsAFunction(Cst)) { check_value_kind(Cst, LLVMFunctionValueKind); - LLVMValueRef Dst = LLVMGetNamedFunction(M, Name); + + LLVMValueRef Dst = nullptr; + // Try an intrinsic + unsigned ID = LLVMGetIntrinsicID(Cst); + if (ID > 0 && !LLVMIntrinsicIsOverloaded(ID)) { + Dst = LLVMGetIntrinsicDeclaration(M, ID, nullptr, 0); + } else { + // Try a normal function + Dst = LLVMGetNamedFunction(M, Name); + } + if (Dst) return Dst; report_fatal_error("Could not find function");