[LLVM] Change LLVMIntrinsicCopyOverloadedName API return type (llvm#114334)

Change the return type of `LLVMIntrinsicCopyOverloadedName` and
`LLVMIntrinsicCopyOverloadedName2` to `char *` instead of `const char *`
since the returned memory is owned by the caller and we expect that the
returned pointer is passed to free to deallocate it (without casting it
back to non-const pointer).

Author: jurahul

llvm/include/llvm-c/Core.h

@@ -2834,10 +2834,8 @@ LLVMTypeRef LLVMIntrinsicGetType(LLVMContextRef Ctx, unsigned ID,
 const char *LLVMIntrinsicGetName(unsigned ID, size_t *NameLength);
 
 /** Deprecated: Use LLVMIntrinsicCopyOverloadedName2 instead. */
-const char *LLVMIntrinsicCopyOverloadedName(unsigned ID,
-                                            LLVMTypeRef *ParamTypes,
-                                            size_t ParamCount,
-                                            size_t *NameLength);
+char *LLVMIntrinsicCopyOverloadedName(unsigned ID, LLVMTypeRef *ParamTypes,
+                                      size_t ParamCount, size_t *NameLength);
 
 /**
  * Copies the name of an overloaded intrinsic identified by a given list of
@@ -2850,10 +2848,9 @@ const char *LLVMIntrinsicCopyOverloadedName(unsigned ID,
  *
  * @see llvm::Intrinsic::getName()
  */
-const char *LLVMIntrinsicCopyOverloadedName2(LLVMModuleRef Mod, unsigned ID,
-                                             LLVMTypeRef *ParamTypes,
-                                             size_t ParamCount,
-                                             size_t *NameLength);
+char *LLVMIntrinsicCopyOverloadedName2(LLVMModuleRef Mod, unsigned ID,
+                                       LLVMTypeRef *ParamTypes,
+                                       size_t ParamCount, size_t *NameLength);
 
 /**
  * Obtain if the intrinsic identified by the given ID is overloaded.

llvm/lib/IR/Core.cpp

@@ -2485,21 +2485,18 @@ LLVMTypeRef LLVMIntrinsicGetType(LLVMContextRef Ctx, unsigned ID,
   return wrap(llvm::Intrinsic::getType(*unwrap(Ctx), IID, Tys));
 }
 
-const char *LLVMIntrinsicCopyOverloadedName(unsigned ID,
-                                            LLVMTypeRef *ParamTypes,
-                                            size_t ParamCount,
-                                            size_t *NameLength) {
+char *LLVMIntrinsicCopyOverloadedName(unsigned ID, LLVMTypeRef *ParamTypes,
+                                      size_t ParamCount, size_t *NameLength) {
   auto IID = llvm_map_to_intrinsic_id(ID);
   ArrayRef<Type*> Tys(unwrap(ParamTypes), ParamCount);
   auto Str = llvm::Intrinsic::getNameNoUnnamedTypes(IID, Tys);
   *NameLength = Str.length();
   return strdup(Str.c_str());
 }
 
-const char *LLVMIntrinsicCopyOverloadedName2(LLVMModuleRef Mod, unsigned ID,
-                                             LLVMTypeRef *ParamTypes,
-                                             size_t ParamCount,
-                                             size_t *NameLength) {
+char *LLVMIntrinsicCopyOverloadedName2(LLVMModuleRef Mod, unsigned ID,
+                                       LLVMTypeRef *ParamTypes,
+                                       size_t ParamCount, size_t *NameLength) {
   auto IID = llvm_map_to_intrinsic_id(ID);
   ArrayRef<Type *> Tys(unwrap(ParamTypes), ParamCount);
   auto Str = llvm::Intrinsic::getName(IID, Tys, unwrap(Mod));