all: remove pointer ElementType calls

This is needed for opaque pointers, which are enabled by default in
LLVM 15.

builder/build.go

@@ -411,7 +411,7 @@ func Build(pkgName, outpath, tmpdir string, config *compileopts.Config) (BuildRe
 						return errors.New("global not found: " + globalName)
 					}
 					name := global.Name()
-					newGlobal := llvm.AddGlobal(mod, global.Type().ElementType(), name+".tmp")
+					newGlobal := llvm.AddGlobal(mod, global.GlobalValueType(), name+".tmp")
 					global.ReplaceAllUsesWith(newGlobal)
 					global.EraseFromParentAsGlobal()
 					newGlobal.SetName(name)
@@ -1127,7 +1127,7 @@ func setGlobalValues(mod llvm.Module, globals map[string]map[string]string) erro
 
 			// A strin is a {ptr, len} pair. We need these types to build the
 			// initializer.
-			initializerType := global.Type().ElementType()
+			initializerType := global.GlobalValueType()
 			if initializerType.TypeKind() != llvm.StructTypeKind || initializerType.StructName() == "" {
 				return fmt.Errorf("%s: not a string", globalName)
 			}

compiler/asserts.go

@@ -91,7 +91,7 @@ func (b *builder) createSliceToArrayPointerCheck(sliceLen llvm.Value, arrayLen i
 
 // createUnsafeSliceCheck inserts a runtime check used for unsafe.Slice. This
 // function must panic if the ptr/len parameters are invalid.
-func (b *builder) createUnsafeSliceCheck(ptr, len llvm.Value, lenType *types.Basic) {
+func (b *builder) createUnsafeSliceCheck(ptr, len llvm.Value, elementType llvm.Type, lenType *types.Basic) {
 	// From the documentation of unsafe.Slice:
 	//   > At run time, if len is negative, or if ptr is nil and len is not
 	//   > zero, a run-time panic occurs.
@@ -105,7 +105,7 @@ func (b *builder) createUnsafeSliceCheck(ptr, len llvm.Value, lenType *types.Bas
 
 	// Determine the maximum slice size, and therefore the maximum value of the
 	// len parameter.
-	maxSize := b.maxSliceSize(ptr.Type().ElementType())
+	maxSize := b.maxSliceSize(elementType)
 	maxSizeValue := llvm.ConstInt(len.Type(), maxSize, false)
 
 	// Do the check. By using unsigned greater than for the length check, signed

compiler/calls.go

@@ -20,7 +20,7 @@ const maxFieldsPerParam = 3
 type paramInfo struct {
 	llvmType llvm.Type
 	name     string // name, possibly with suffixes for e.g. struct fields
-	flags    paramFlags
+	elemSize uint64 // size of pointer element type, or 0 if this isn't a pointer
 }
 
 // paramFlags identifies parameter attributes for flags. Most importantly, it
@@ -96,13 +96,7 @@ func (c *compilerContext) expandFormalParamType(t llvm.Type, name string, goType
 		// failed to expand this parameter: too many fields
 	}
 	// TODO: split small arrays
-	return []paramInfo{
+	return []paramInfo{c.getParamInfo(t, name, goType)}
-		{
-			llvmType: t,
-			name:     name,
-			flags:    getTypeFlags(goType),
-		},
-	}
 }
 
 // expandFormalParamOffsets returns a list of offsets from the start of an
@@ -152,7 +146,6 @@ func (b *builder) expandFormalParam(v llvm.Value) []llvm.Value {
 // Try to flatten a struct type to a list of types. Returns a 1-element slice
 // with the passed in type if this is not possible.
 func (c *compilerContext) flattenAggregateType(t llvm.Type, name string, goType types.Type) []paramInfo {
-	typeFlags := getTypeFlags(goType)
 	switch t.TypeKind() {
 	case llvm.StructTypeKind:
 		var paramInfos []paramInfo
@@ -183,40 +176,37 @@ func (c *compilerContext) flattenAggregateType(t llvm.Type, name string, goType
 				}
 			}
 			subInfos := c.flattenAggregateType(subfield, name+"."+suffix, extractSubfield(goType, i))
-			for i := range subInfos {
-				subInfos[i].flags |= typeFlags
-			}
 			paramInfos = append(paramInfos, subInfos...)
 		}
 		return paramInfos
 	default:
-		return []paramInfo{
+		return []paramInfo{c.getParamInfo(t, name, goType)}
-			{
-				llvmType: t,
-				name:     name,
-				flags:    typeFlags,
-			},
-		}
 	}
 }
 
-// getTypeFlags returns the type flags for a given type. It will not recurse
+// getParamInfo collects information about a parameter. For example, if this
-// into sub-types (such as in structs).
+// parameter is pointer-like, it will also store the element type for the
-func getTypeFlags(t types.Type) paramFlags {
+// dereferenceable_or_null attribute.
-	if t == nil {
+func (c *compilerContext) getParamInfo(t llvm.Type, name string, goType types.Type) paramInfo {
-		return 0
+	info := paramInfo{
+		llvmType: t,
+		name:     name,
 	}
-	switch t.Underlying().(type) {
+	if goType != nil {
-	case *types.Pointer:
+		switch underlying := goType.Underlying().(type) {
-		// Pointers in Go must either point to an object or be nil.
+		case *types.Pointer:
-		return paramIsDeferenceableOrNull
+			// Pointers in Go must either point to an object or be nil.
-	case *types.Chan, *types.Map:
+			info.elemSize = c.targetData.TypeAllocSize(c.getLLVMType(underlying.Elem()))
-		// Channels and maps are implemented as pointers pointing to some
+		case *types.Chan:
-		// object, and follow the same rules as *types.Pointer.
+			// Channels are implemented simply as a *runtime.channel.
-		return paramIsDeferenceableOrNull
+			info.elemSize = c.targetData.TypeAllocSize(c.getLLVMRuntimeType("channel"))
-	default:
+		case *types.Map:
-		return 0
+			// Maps are similar to channels: they are implemented as a
+			// *runtime.hashmap.
+			info.elemSize = c.targetData.TypeAllocSize(c.getLLVMRuntimeType("hashmap"))
+		}
 	}
+	return info
 }
 
 // extractSubfield extracts a field from a struct, or returns null if this is

compiler/compiler.go

@@ -862,7 +862,7 @@ func (c *compilerContext) createPackage(irbuilder llvm.Builder, pkg *ssa.Package
 			if files, ok := c.embedGlobals[member.Name()]; ok {
 				c.createEmbedGlobal(member, global, files)
 			} else if !info.extern {
-				global.SetInitializer(llvm.ConstNull(global.Type().ElementType()))
+				global.SetInitializer(llvm.ConstNull(global.GlobalValueType()))
 				global.SetVisibility(llvm.HiddenVisibility)
 				if info.section != "" {
 					global.SetSection(info.section)
@@ -1405,7 +1405,7 @@ func (b *builder) createInstruction(instr ssa.Instruction) {
 			b.CreateRet(b.getValue(instr.Results[0]))
 		} else {
 			// Multiple return values. Put them all in a struct.
-			retVal := llvm.ConstNull(b.llvmFn.Type().ElementType().ReturnType())
+			retVal := llvm.ConstNull(b.llvmFn.GlobalValueType().ReturnType())
 			for i, result := range instr.Results {
 				val := b.getValue(result)
 				retVal = b.CreateInsertValue(retVal, val, i, "")
@@ -1444,7 +1444,7 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 		elemsBuf := b.CreateExtractValue(elems, 0, "append.elemsBuf")
 		elemsPtr := b.CreateBitCast(elemsBuf, b.i8ptrType, "append.srcPtr")
 		elemsLen := b.CreateExtractValue(elems, 1, "append.elemsLen")
-		elemType := srcBuf.Type().ElementType()
+		elemType := b.getLLVMType(argTypes[0].Underlying().(*types.Slice).Elem())
 		elemSize := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(elemType), false)
 		result := b.createRuntimeCall("sliceAppend", []llvm.Value{srcPtr, elemsPtr, srcLen, srcCap, elemsLen, elemSize}, "append.new")
 		newPtr := b.CreateExtractValue(result, 0, "append.newPtr")
@@ -1497,7 +1497,7 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 		srcLen := b.CreateExtractValue(src, 1, "copy.srcLen")
 		dstBuf := b.CreateExtractValue(dst, 0, "copy.dstArray")
 		srcBuf := b.CreateExtractValue(src, 0, "copy.srcArray")
-		elemType := dstBuf.Type().ElementType()
+		elemType := b.getLLVMType(argTypes[0].Underlying().(*types.Slice).Elem())
 		dstBuf = b.CreateBitCast(dstBuf, b.i8ptrType, "copy.dstPtr")
 		srcBuf = b.CreateBitCast(srcBuf, b.i8ptrType, "copy.srcPtr")
 		elemSize := llvm.ConstInt(b.uintptrType, b.targetData.TypeAllocSize(elemType), false)
@@ -1637,7 +1637,8 @@ func (b *builder) createBuiltin(argTypes []types.Type, argValues []llvm.Value, c
 			b.uintptrType,
 			b.uintptrType,
 		}, false))
-		b.createUnsafeSliceCheck(ptr, len, argTypes[1].Underlying().(*types.Basic))
+		elementType := b.getLLVMType(argTypes[0].Underlying().(*types.Pointer).Elem())
+		b.createUnsafeSliceCheck(ptr, len, elementType, argTypes[1].Underlying().(*types.Basic))
 		if len.Type().IntTypeWidth() < b.uintptrType.IntTypeWidth() {
 			// Too small, zero-extend len.
 			len = b.CreateZExt(len, b.uintptrType, "")
@@ -1712,7 +1713,7 @@ func (b *builder) createFunctionCall(instr *ssa.CallCommon) (llvm.Value, error)
 				// Eventually we might be able to eliminate this special case
 				// entirely. For details, see:
 				// https://discourse.llvm.org/t/rfc-enabling-wstrict-prototypes-by-default-in-c/60521
-				calleeType = llvm.FunctionType(callee.Type().ElementType().ReturnType(), nil, false)
+				calleeType = llvm.FunctionType(callee.GlobalValueType().ReturnType(), nil, false)
 				callee = llvm.ConstBitCast(callee, llvm.PointerType(calleeType, b.funcPtrAddrSpace))
 			}
 		case *ssa.MakeClosure:
@@ -3095,7 +3096,7 @@ func (b *builder) createUnOp(unop *ssa.UnOp) (llvm.Value, error) {
 		}
 	case token.MUL: // *x, dereference pointer
 		valueType := b.getLLVMType(unop.X.Type().Underlying().(*types.Pointer).Elem())
-		if b.targetData.TypeAllocSize(x.Type().ElementType()) == 0 {
+		if b.targetData.TypeAllocSize(valueType) == 0 {
 			// zero-length data
 			return llvm.ConstNull(valueType), nil
 		} else if strings.HasSuffix(unop.X.String(), "$funcaddr") {

compiler/func.go

@@ -73,7 +73,7 @@ func (c *compilerContext) getFuncType(typ *types.Signature) llvm.Type {
 	return c.ctx.StructType([]llvm.Type{c.i8ptrType, c.rawVoidFuncType}, false)
 }
 
-// getRawFuncType returns a LLVM function pointer type for a given signature.
+// getRawFuncType returns a LLVM function type for a given signature.
 func (c *compilerContext) getRawFuncType(typ *types.Signature) llvm.Type {
 	// Get the return type.
 	var returnType llvm.Type

compiler/interface.go

@@ -86,7 +86,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
 		if _, ok := typ.Underlying().(*types.Pointer); !ok {
 			ptrTo = c.getTypeCode(types.NewPointer(typ))
 		}
-		globalValue := llvm.ConstNull(global.Type().ElementType())
+		globalValue := llvm.ConstNull(global.GlobalValueType())
 		if !references.IsNil() {
 			globalValue = c.builder.CreateInsertValue(globalValue, references, 0, "")
 		}
@@ -533,7 +533,7 @@ func (c *compilerContext) getInterfaceInvokeWrapper(fn *ssa.Function, llvmFnType
 
 	receiverValue := b.emitPointerUnpack(wrapper.Param(0), []llvm.Type{receiverType})[0]
 	params := append(b.expandFormalParam(receiverValue), wrapper.Params()[1:]...)
-	if llvmFn.Type().ElementType().ReturnType().TypeKind() == llvm.VoidTypeKind {
+	if llvmFnType.ReturnType().TypeKind() == llvm.VoidTypeKind {
 		b.CreateCall(llvmFnType, llvmFn, params, "")
 		b.CreateRetVoid()
 	} else {

compiler/ircheck/check.go

@@ -70,10 +70,7 @@ func (c *checker) checkType(t llvm.Type, checked map[llvm.Type]struct{}, special
 			return fmt.Errorf("failed to verify element type of array type %s: %s", t.String(), err.Error())
 		}
 	case llvm.PointerTypeKind:
-		// check underlying type
+		// Pointers can't be checked in an opaque pointer world.
-		if err := c.checkType(t.ElementType(), checked, specials); err != nil {
-			return fmt.Errorf("failed to verify underlying type of pointer type %s: %s", t.String(), err.Error())
-		}
 	case llvm.VectorTypeKind:
 		// check element type
 		if err := c.checkType(t.ElementType(), checked, specials); err != nil {

compiler/symbol.go

@@ -83,7 +83,7 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 	// Add an extra parameter as the function context. This context is used in
 	// closures and bound methods, but should be optimized away when not used.
 	if !info.exported {
-		paramInfos = append(paramInfos, paramInfo{llvmType: c.i8ptrType, name: "context", flags: 0})
+		paramInfos = append(paramInfos, paramInfo{llvmType: c.i8ptrType, name: "context", elemSize: 0})
 	}
 
 	var paramTypes []llvm.Type
@@ -112,17 +112,8 @@ func (c *compilerContext) getFunction(fn *ssa.Function) (llvm.Type, llvm.Value)
 
 	dereferenceableOrNullKind := llvm.AttributeKindID("dereferenceable_or_null")
 	for i, info := range paramInfos {
-		if info.flags&paramIsDeferenceableOrNull == 0 {
+		if info.elemSize != 0 {
-			continue
+			dereferenceableOrNull := c.ctx.CreateEnumAttribute(dereferenceableOrNullKind, info.elemSize)
-		}
-		if info.llvmType.TypeKind() == llvm.PointerTypeKind {
-			el := info.llvmType.ElementType()
-			size := c.targetData.TypeAllocSize(el)
-			if size == 0 {
-				// dereferenceable_or_null(0) appears to be illegal in LLVM.
-				continue
-			}
-			dereferenceableOrNull := c.ctx.CreateEnumAttribute(dereferenceableOrNullKind, size)
 			llvmFn.AddAttributeAtIndex(i+1, dereferenceableOrNull)
 		}
 	}

interp/compiler.go

@@ -209,7 +209,7 @@ func (r *runner) compileFunction(llvmFn llvm.Value) *function {
 			case llvm.Alloca:
 				// Alloca allocates stack space for local variables.
 				numElements := r.getValue(inst.llvmInst.Operand(0)).(literalValue).value.(uint32)
-				elementSize := r.targetData.TypeAllocSize(inst.llvmInst.Type().ElementType())
+				elementSize := r.targetData.TypeAllocSize(inst.llvmInst.AllocatedType())
 				inst.operands = []value{
 					literalValue{elementSize * uint64(numElements)},
 				}
@@ -218,17 +218,17 @@ func (r *runner) compileFunction(llvmFn llvm.Value) *function {
 				inst.name = llvmInst.Name()
 				ptr := llvmInst.Operand(0)
 				n := llvmInst.OperandsCount()
-				elementType := ptr.Type().ElementType()
+				elementType := llvmInst.GEPSourceElementType()
 				// gep: [source ptr, dest value size, pairs of indices...]
 				inst.operands = []value{
 					r.getValue(ptr),
-					literalValue{r.targetData.TypeAllocSize(llvmInst.Type().ElementType())},
 					r.getValue(llvmInst.Operand(1)),
 					literalValue{r.targetData.TypeAllocSize(elementType)},
 				}
 				for i := 2; i < n; i++ {
 					operand := r.getValue(llvmInst.Operand(i))
-					if elementType.TypeKind() == llvm.StructTypeKind {
+					switch elementType.TypeKind() {
+					case llvm.StructTypeKind:
 						index := operand.(literalValue).value.(uint32)
 						elementOffset := r.targetData.ElementOffset(elementType, int(index))
 						// Encode operands in a special way. The elementOffset
@@ -242,12 +242,15 @@ func (r *runner) compileFunction(llvmFn llvm.Value) *function {
 						// runtime.
 						inst.operands = append(inst.operands, literalValue{elementOffset}, literalValue{^uint64(index)})
 						elementType = elementType.StructElementTypes()[index]
-					} else {
+					case llvm.ArrayTypeKind:
 						elementType = elementType.ElementType()
 						elementSize := r.targetData.TypeAllocSize(elementType)
 						elementSizeOperand := literalValue{elementSize}
 						// Add operand * elementSizeOperand bytes to the pointer.
 						inst.operands = append(inst.operands, operand, elementSizeOperand)
+					default:
+						// This should be unreachable.
+						panic("unknown type: " + elementType.String())
 					}
 				}
 			case llvm.BitCast, llvm.IntToPtr, llvm.PtrToInt:
@@ -267,10 +270,12 @@ func (r *runner) compileFunction(llvmFn llvm.Value) *function {
 					case llvm.StructTypeKind:
 						offset += r.targetData.ElementOffset(indexingType, int(index))
 						indexingType = indexingType.StructElementTypes()[index]
-					default: // ArrayTypeKind
+					case llvm.ArrayTypeKind:
 						indexingType = indexingType.ElementType()
 						elementSize := r.targetData.TypeAllocSize(indexingType)
 						offset += elementSize * uint64(index)
+					default:
+						panic("unknown type kind") // unreachable
 					}
 				}
 				size := r.targetData.TypeAllocSize(inst.llvmInst.Type())
@@ -290,10 +295,12 @@ func (r *runner) compileFunction(llvmFn llvm.Value) *function {
 					case llvm.StructTypeKind:
 						offset += r.targetData.ElementOffset(indexingType, int(index))
 						indexingType = indexingType.StructElementTypes()[index]
-					default: // ArrayTypeKind
+					case llvm.ArrayTypeKind:
 						indexingType = indexingType.ElementType()
 						elementSize := r.targetData.TypeAllocSize(indexingType)
 						offset += elementSize * uint64(index)
+					default:
+						panic("unknown type kind") // unreachable
 					}
 				}
 				// insertvalue [agg, elt, byteOffset]

interp/interp.go

@@ -156,7 +156,7 @@ func Run(mod llvm.Module, timeout time.Duration, debug bool) error {
 		if obj.constant {
 			continue // constant buffers can't have been modified
 		}
-		initializer, err := obj.buffer.toLLVMValue(obj.llvmGlobal.Type().ElementType(), &mem)
+		initializer, err := obj.buffer.toLLVMValue(obj.llvmGlobal.GlobalValueType(), &mem)
 		if err == errInvalidPtrToIntSize {
 			// This can happen when a previous interp run did not have the
 			// correct LLVM type for a global and made something up. In that
@@ -190,7 +190,7 @@ func Run(mod llvm.Module, timeout time.Duration, debug bool) error {
 		if err != nil {
 			return err
 		}
-		if checks && initializer.Type() != obj.llvmGlobal.Type().ElementType() {
+		if checks && initializer.Type() != obj.llvmGlobal.GlobalValueType() {
 			panic("initializer type mismatch")
 		}
 		obj.llvmGlobal.SetInitializer(initializer)
@@ -213,7 +213,7 @@ func RunFunc(fn llvm.Value, timeout time.Duration, debug bool) error {
 	r.pkgName = initName[:len(initName)-len(".init")]
 
 	// Create new function with the interp result.
-	newFn := llvm.AddFunction(mod, fn.Name()+".tmp", fn.Type().ElementType())
+	newFn := llvm.AddFunction(mod, fn.Name()+".tmp", fn.GlobalValueType())
 	newFn.SetLinkage(fn.Linkage())
 	newFn.SetVisibility(fn.Visibility())
 	entry := mod.Context().AddBasicBlock(newFn, "entry")
@@ -263,11 +263,11 @@ func RunFunc(fn llvm.Value, timeout time.Duration, debug bool) error {
 		if obj.constant {
 			continue // constant, so can't have been modified
 		}
-		initializer, err := obj.buffer.toLLVMValue(obj.llvmGlobal.Type().ElementType(), &mem)
+		initializer, err := obj.buffer.toLLVMValue(obj.llvmGlobal.GlobalValueType(), &mem)
 		if err != nil {
 			return err
 		}
-		if checks && initializer.Type() != obj.llvmGlobal.Type().ElementType() {
+		if checks && initializer.Type() != obj.llvmGlobal.GlobalValueType() {
 			panic("initializer type mismatch")
 		}
 		obj.llvmGlobal.SetInitializer(initializer)

interp/interpreter.go

@@ -655,7 +655,7 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			// GetElementPtr does pointer arithmetic, changing the offset of the
 			// pointer into the underlying object.
 			var offset uint64
-			for i := 2; i < len(operands); i += 2 {
+			for i := 1; i < len(operands); i += 2 {
 				index := operands[i].Uint()
 				elementSize := operands[i+1].Uint()
 				if int64(elementSize) < 0 {

interp/memory.go

@@ -808,14 +808,17 @@ func (v rawValue) rawLLVMValue(mem *memoryView) (llvm.Value, error) {
 			if err != nil {
 				return llvm.Value{}, err
 			}
-			elementType := field.Type().ElementType()
+			if !field.IsAGlobalVariable().IsNil() {
-			if elementType.TypeKind() == llvm.StructTypeKind {
+				elementType := field.GlobalValueType()
-				// There are some special pointer types that should be used as a
+				if elementType.TypeKind() == llvm.StructTypeKind {
-				// ptrtoint, so that they can be used in certain optimizations.
+					// There are some special pointer types that should be used
-				name := elementType.StructName()
+					// as a ptrtoint, so that they can be used in certain
-				if name == "runtime.typecodeID" || name == "runtime.funcValueWithSignature" {
+					// optimizations.
-					uintptrType := ctx.IntType(int(mem.r.pointerSize) * 8)
+					name := elementType.StructName()
-					field = llvm.ConstPtrToInt(field, uintptrType)
+					if name == "runtime.typecodeID" || name == "runtime.funcValueWithSignature" {
+						uintptrType := ctx.IntType(int(mem.r.pointerSize) * 8)
+						field = llvm.ConstPtrToInt(field, uintptrType)
+					}
 				}
 			}
 			structFields = append(structFields, field)
@@ -998,7 +1001,7 @@ func (v *rawValue) set(llvmValue llvm.Value, r *runner) {
 			ptr := llvmValue.Operand(0)
 			index := llvmValue.Operand(1)
 			numOperands := llvmValue.OperandsCount()
-			elementType := ptr.Type().ElementType()
+			elementType := llvmValue.GEPSourceElementType()
 			totalOffset := r.targetData.TypeAllocSize(elementType) * index.ZExtValue()
 			for i := 2; i < numOperands; i++ {
 				indexValue := llvmValue.Operand(i)
@@ -1173,7 +1176,7 @@ func (r *runner) getValue(llvmValue llvm.Value) value {
 			r.globals[llvmValue] = index
 			r.objects = append(r.objects, obj)
 			if !llvmValue.IsAGlobalVariable().IsNil() {
-				obj.size = uint32(r.targetData.TypeAllocSize(llvmValue.Type().ElementType()))
+				obj.size = uint32(r.targetData.TypeAllocSize(llvmValue.GlobalValueType()))
 				if initializer := llvmValue.Initializer(); !initializer.IsNil() {
 					obj.buffer = r.getValue(initializer)
 					obj.constant = llvmValue.IsGlobalConstant()

transform/allocs.go

@@ -124,7 +124,7 @@ func OptimizeAllocs(mod llvm.Module, printAllocs *regexp.Regexp, logger func(tok
 		alloca.SetAlignment(alignment)
 
 		// Zero the allocation inside the block where the value was originally allocated.
-		zero := llvm.ConstNull(alloca.Type().ElementType())
+		zero := llvm.ConstNull(alloca.AllocatedType())
 		builder.SetInsertPointBefore(bitcast)
 		store := builder.CreateStore(zero, alloca)
 		store.SetAlignment(alignment)

transform/gc.go

@@ -18,7 +18,7 @@ func MakeGCStackSlots(mod llvm.Module) bool {
 		stackChainStart := mod.NamedGlobal("runtime.stackChainStart")
 		if !stackChainStart.IsNil() {
 			stackChainStart.SetLinkage(llvm.InternalLinkage)
-			stackChainStart.SetInitializer(llvm.ConstNull(stackChainStart.Type().ElementType()))
+			stackChainStart.SetInitializer(llvm.ConstNull(stackChainStart.GlobalValueType()))
 			stackChainStart.SetGlobalConstant(true)
 		}
 		return false
@@ -96,7 +96,7 @@ func MakeGCStackSlots(mod llvm.Module) bool {
 		return false
 	}
 	stackChainStart.SetLinkage(llvm.InternalLinkage)
-	stackChainStartType := stackChainStart.Type().ElementType()
+	stackChainStartType := stackChainStart.GlobalValueType()
 	stackChainStart.SetInitializer(llvm.ConstNull(stackChainStartType))
 
 	// Iterate until runtime.trackPointer has no uses left.

transform/interface-lowering.go

@@ -423,7 +423,7 @@ func (p *lowerInterfacesPass) defineInterfaceImplementsFunc(fn llvm.Value, itf *
 func (p *lowerInterfacesPass) defineInterfaceMethodFunc(fn llvm.Value, itf *interfaceInfo, signature *signatureInfo) {
 	context := fn.LastParam()
 	actualType := llvm.PrevParam(context)
-	returnType := fn.Type().ElementType().ReturnType()
+	returnType := fn.GlobalValueType().ReturnType()
 	context.SetName("context")
 	actualType.SetName("actualType")
 	fn.SetLinkage(llvm.InternalLinkage)

transform/llvm.go

@@ -66,7 +66,7 @@ func getGlobalBytes(global llvm.Value, builder llvm.Builder) []byte {
 // function used for creating reflection sidetables, for example.
 func replaceGlobalIntWithArray(mod llvm.Module, name string, buf interface{}) llvm.Value {
 	oldGlobal := mod.NamedGlobal(name)
-	globalType, global := makeGlobalArray(mod, buf, name+".tmp", oldGlobal.Type().ElementType())
+	globalType, global := makeGlobalArray(mod, buf, name+".tmp", oldGlobal.GlobalValueType())
 	gep := llvm.ConstGEP(globalType, global, []llvm.Value{
 		llvm.ConstInt(mod.Context().Int32Type(), 0, false),
 		llvm.ConstInt(mod.Context().Int32Type(), 0, false),

transform/wasm-abi.go

@@ -50,7 +50,7 @@ func ExternalInt64AsPtr(mod llvm.Module, config *compileopts.Config) error {
 		paramTypes := []llvm.Type{}
 
 		// Check return type for 64-bit integer.
-		fnType := fn.Type().ElementType()
+		fnType := fn.GlobalValueType()
 		returnType := fnType.ReturnType()
 		if returnType == int64Type {
 			hasInt64 = true