Take symbol name by metadata arg rather than ptr to GlobalValue

Author: mysterymath

llvm/docs/LangRef.rst

@@ -30462,14 +30462,14 @@ that purpose.
 Arguments:
 """"""""""
 
-The ``llvm.reloc.none`` intrinsic takes one argument, which may be any global
-value.
+The ``llvm.reloc.none`` intrinsic takes the symbol as a metadata string
+argument.
 
 Semantics:
 """"""""""
 
-This intrinsic emits a no-op relocation at the location of the intrinsic call
-for the symbol that corresponds to the global value argument.
+This intrinsic emits a no-op relocation for the symbol the location of the
+intrinsic call.
 
 
 Stack Map Intrinsics

llvm/include/llvm/IR/Intrinsics.td

@@ -1917,7 +1917,7 @@ def int_threadlocal_address : DefaultAttrsIntrinsic<[llvm_anyptr_ty], [LLVMMatch
 def int_stepvector : DefaultAttrsIntrinsic<[llvm_anyvector_ty],
                                             [], [IntrNoMem]>;
 
-def int_reloc_none : DefaultAttrsIntrinsic<[], [llvm_ptr_ty],
+def int_reloc_none : DefaultAttrsIntrinsic<[], [llvm_metadata_ty],
   [IntrHasSideEffects, IntrInaccessibleMemOnly, IntrWillReturn]>;
 
 //===---------------- Vector Predication Intrinsics --------------===//

llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

@@ -7758,14 +7758,15 @@ void SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I,
   }
 
   case Intrinsic::reloc_none: {
-    SDValue V = getValue(I.getArgOperand(0));
-    auto *GA = dyn_cast<GlobalAddressSDNode>(V);
-    if (!GA)
-      report_fatal_error("llvm.reloc.none operand must be a GlobalValue");
+    Metadata *MD = cast<MetadataAsValue>(I.getArgOperand(0))->getMetadata();
+    StringRef SymbolName = cast<MDString>(MD)->getString();
+    auto *M = const_cast<Module *>(I.getModule());
+    auto *RelocSymbol = cast<GlobalVariable>(
+        M->getOrInsertGlobal(SymbolName, StructType::create(M->getContext())));
     SDValue Ops[2];
     Ops[0] = getRoot();
-    Ops[1] = DAG.getTargetGlobalAddress(GA->getGlobal(), sdl, V.getValueType(),
-                                        GA->getOffset());
+    Ops[1] = DAG.getTargetGlobalAddress(
+        RelocSymbol, sdl, TLI.getPointerTy(DAG.getDataLayout()), 0);
     DAG.setRoot(DAG.getNode(ISD::RELOC_NONE, sdl, MVT::Other, Ops));
     return;
   }