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Code Issues Packages Projects Releases 6 Wiki Activity

runtime: require explicit GC layouts

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This commit is contained in:
Jake Bailey
2026-08-07 10:21:19 -07:00
committed by Ron Evans
parent 1a4cb2032e
commit a7360d5ad3
28 changed files with 279 additions and 108 deletions
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compiler/interface.go
+7 -1
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@@ -284,6 +284,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
types.NewVar(token.NoPos, nil, "elementType", types.Typ[types.UnsafePointer]),
types.NewVar(token.NoPos, nil, "length", types.Typ[types.Uintptr]),
types.NewVar(token.NoPos, nil, "sliceOf", types.Typ[types.UnsafePointer]),
types.NewVar(token.NoPos, nil, "layout", types.Typ[types.UnsafePointer]),
)
case *types.Map:
typeFieldTypes = append(typeFieldTypes,
@@ -291,6 +292,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
types.NewVar(token.NoPos, nil, "ptrTo", types.Typ[types.UnsafePointer]),
types.NewVar(token.NoPos, nil, "elementType", types.Typ[types.UnsafePointer]),
types.NewVar(token.NoPos, nil, "keyType", types.Typ[types.UnsafePointer]),
types.NewVar(token.NoPos, nil, "hashmapTypeInfo", types.Typ[types.UnsafePointer]),
)
case *types.Struct:
typeFieldTypes = append(typeFieldTypes,
@@ -299,6 +301,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
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, "layout", types.Typ[types.UnsafePointer]),
types.NewVar(token.NoPos, nil, "fields", types.NewArray(c.getRuntimeType("structField"), int64(typ.NumFields()))),
)
if len(methods) > 0 {
@@ -418,6 +421,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
c.getTypeCode(typ.Elem()), // elementType
llvm.ConstInt(c.uintptrType, uint64(typ.Len()), false), // length
c.getTypeCode(types.NewSlice(typ.Elem())), // slicePtr
c.createObjectLayout(c.getLLVMType(typ), token.NoPos), // layout
}
case *types.Map:
typeFields = []llvm.Value{
@@ -425,6 +429,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
c.getTypeCode(types.NewPointer(typ)), // ptrTo
c.getTypeCode(typ.Elem()), // elem
c.getTypeCode(typ.Key()), // key
c.getHashmapTypeInfo(typ, token.NoPos), // hashmapTypeInfo
}
case *types.Struct:
var pkgpath string
@@ -450,6 +455,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
pkgPathPtr,
llvm.ConstInt(c.ctx.Int32Type(), uint64(size), false), // size
llvm.ConstInt(c.ctx.Int16Type(), uint64(typ.NumFields()), false), // numFields
c.createObjectLayout(llvmStructType, token.NoPos), // layout
}
structFieldType := c.getLLVMRuntimeType("structField")
@@ -510,7 +516,7 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
typeFields = []llvm.Value{c.getTypeCode(types.NewPointer(typ))}
// TODO: params, return values, etc
}
// Prepend metadata byte.
// Prepend the common RawType field.
typeFields = append([]llvm.Value{
llvm.ConstInt(c.ctx.Int8Type(), uint64(metabyte), false),
}, typeFields...)