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add struct size and field offsets to reflect data

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This commit is contained in:
Damian Gryski
2023-04-15 11:14:37 -07:00
committed by Ron Evans
parent 36bd66a858
commit 4c0fbbfc7f
3 changed files with 17 additions and 26 deletions
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compiler/interface.go
+7
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@@ -205,6 +205,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
types.NewVar(token.NoPos, nil, "numMethods", types.Typ[types.Uint16]),
types.NewVar(token.NoPos, nil, "ptrTo", types.Typ[types.UnsafePointer]),
types.NewVar(token.NoPos, nil, "pkgpath", types.Typ[types.UnsafePointer]),
types.NewVar(token.NoPos, nil, "size", types.Typ[types.Uint32]),
types.NewVar(token.NoPos, nil, "numFields", types.Typ[types.Uint16]),
types.NewVar(token.NoPos, nil, "fields", types.NewArray(c.getRuntimeType("structField"), int64(typ.NumFields()))),
)
@@ -306,16 +307,21 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
}
pkgPathPtr := c.pkgPathPtr(pkgpath)
llvmStructType := c.getLLVMType(typ)
size := c.targetData.TypeStoreSize(llvmStructType)
typeFields = []llvm.Value{
llvm.ConstInt(c.ctx.Int16Type(), uint64(ms.Len()), false), // numMethods
c.getTypeCode(types.NewPointer(typ)), // ptrTo
pkgPathPtr,
llvm.ConstInt(c.ctx.Int32Type(), uint64(size), false), // size
llvm.ConstInt(c.ctx.Int16Type(), uint64(typ.NumFields()), false), // numFields
}
structFieldType := c.getLLVMRuntimeType("structField")
var fields []llvm.Value
for i := 0; i < typ.NumFields(); i++ {
field := typ.Field(i)
offset := c.targetData.ElementOffset(llvmStructType, i)
var flags uint8
if field.Anonymous() {
flags |= structFieldFlagAnonymous
@@ -346,6 +352,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
fieldType := c.getTypeCode(field.Type())
fields = append(fields, llvm.ConstNamedStruct(structFieldType, []llvm.Value{
fieldType,
llvm.ConstInt(c.ctx.Int32Type(), uint64(offset), false),
llvm.ConstGEP(dataGlobal.GlobalValueType(), dataGlobal, []llvm.Value{
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
llvm.ConstInt(c.ctx.Int32Type(), 0, false),