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compiler: move error union types and error set types to InternPool

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One change worth noting in this commit is that `module.global_error_set`
is no longer kept strictly up-to-date. The previous code reserved
integer error values when dealing with error set types, but this is no
longer needed because the integer values are not needed for semantic
analysis unless `@errorToInt` or `@intToError` are used and therefore
may be assigned lazily.
This commit is contained in:
Andrew Kelley
2023-05-20 12:09:07 -07:00
parent 7bf91fc79a
commit 9ff514b6a3
21 changed files with 1187 additions and 1574 deletions
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39
src/codegen/c.zig
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@@ -465,7 +465,7 @@ pub const Function = struct {
}),
},
.data = switch (key) {
.tag_name => .{ .tag_name = try data.tag_name.copy(arena) },
.tag_name => .{ .tag_name = data.tag_name },
.never_tail => .{ .never_tail = data.never_tail },
.never_inline => .{ .never_inline = data.never_inline },
},
@@ -862,8 +862,8 @@ pub const DeclGen = struct {
return writer.writeByte('}');
},
.ErrorUnion => {
const payload_ty = ty.errorUnionPayload();
const error_ty = ty.errorUnionSet();
const payload_ty = ty.errorUnionPayload(mod);
const error_ty = ty.errorUnionSet(mod);
if (!payload_ty.hasRuntimeBitsIgnoreComptime(mod)) {
return dg.renderValue(writer, error_ty, val, location);
@@ -1252,8 +1252,8 @@ pub const DeclGen = struct {
}
},
.ErrorUnion => {
const payload_ty = ty.errorUnionPayload();
const error_ty = ty.errorUnionSet();
const payload_ty = ty.errorUnionPayload(mod);
const error_ty = ty.errorUnionSet(mod);
const error_val = if (val.errorUnionIsPayload()) try mod.intValue(Type.anyerror, 0) else val;
if (!payload_ty.hasRuntimeBitsIgnoreComptime(mod)) {
@@ -4252,6 +4252,7 @@ fn airDbgVar(f: *Function, inst: Air.Inst.Index) !CValue {
}
fn airBlock(f: *Function, inst: Air.Inst.Index) !CValue {
const mod = f.object.dg.module;
const ty_pl = f.air.instructions.items(.data)[inst].ty_pl;
const extra = f.air.extraData(Air.Block, ty_pl.payload);
const body = f.air.extra[extra.end..][0..extra.data.body_len];
@@ -4284,7 +4285,7 @@ fn airBlock(f: *Function, inst: Air.Inst.Index) !CValue {
try f.object.indent_writer.insertNewline();
// noreturn blocks have no `br` instructions reaching them, so we don't want a label
if (!f.typeOfIndex(inst).isNoReturn()) {
if (!f.typeOfIndex(inst).isNoReturn(mod)) {
// label must be followed by an expression, include an empty one.
try writer.print("zig_block_{d}:;\n", .{block_id});
}
@@ -4322,10 +4323,10 @@ fn lowerTry(
const inst_ty = f.typeOfIndex(inst);
const liveness_condbr = f.liveness.getCondBr(inst);
const writer = f.object.writer();
const payload_ty = err_union_ty.errorUnionPayload();
const payload_ty = err_union_ty.errorUnionPayload(mod);
const payload_has_bits = payload_ty.hasRuntimeBitsIgnoreComptime(mod);
if (!err_union_ty.errorUnionSet().errorSetIsEmpty(mod)) {
if (!err_union_ty.errorUnionSet(mod).errorSetIsEmpty(mod)) {
try writer.writeAll("if (");
if (!payload_has_bits) {
if (is_ptr)
@@ -5500,8 +5501,8 @@ fn airUnwrapErrUnionErr(f: *Function, inst: Air.Inst.Index) !CValue {
const operand_is_ptr = operand_ty.zigTypeTag(mod) == .Pointer;
const error_union_ty = if (operand_is_ptr) operand_ty.childType(mod) else operand_ty;
const error_ty = error_union_ty.errorUnionSet();
const payload_ty = error_union_ty.errorUnionPayload();
const error_ty = error_union_ty.errorUnionSet(mod);
const payload_ty = error_union_ty.errorUnionPayload(mod);
const local = try f.allocLocal(inst, inst_ty);
if (!payload_ty.hasRuntimeBits(mod) and operand == .local and operand.local == local.new_local) {
@@ -5539,7 +5540,7 @@ fn airUnwrapErrUnionPay(f: *Function, inst: Air.Inst.Index, is_ptr: bool) !CValu
const error_union_ty = if (is_ptr) operand_ty.childType(mod) else operand_ty;
const writer = f.object.writer();
if (!error_union_ty.errorUnionPayload().hasRuntimeBits(mod)) {
if (!error_union_ty.errorUnionPayload(mod).hasRuntimeBits(mod)) {
if (!is_ptr) return .none;
const local = try f.allocLocal(inst, inst_ty);
@@ -5601,9 +5602,9 @@ fn airWrapErrUnionErr(f: *Function, inst: Air.Inst.Index) !CValue {
const ty_op = f.air.instructions.items(.data)[inst].ty_op;
const inst_ty = f.typeOfIndex(inst);
const payload_ty = inst_ty.errorUnionPayload();
const payload_ty = inst_ty.errorUnionPayload(mod);
const repr_is_err = !payload_ty.hasRuntimeBitsIgnoreComptime(mod);
const err_ty = inst_ty.errorUnionSet();
const err_ty = inst_ty.errorUnionSet(mod);
const err = try f.resolveInst(ty_op.operand);
try reap(f, inst, &.{ty_op.operand});
@@ -5642,8 +5643,8 @@ fn airErrUnionPayloadPtrSet(f: *Function, inst: Air.Inst.Index) !CValue {
const operand = try f.resolveInst(ty_op.operand);
const error_union_ty = f.typeOf(ty_op.operand).childType(mod);
const error_ty = error_union_ty.errorUnionSet();
const payload_ty = error_union_ty.errorUnionPayload();
const error_ty = error_union_ty.errorUnionSet(mod);
const payload_ty = error_union_ty.errorUnionPayload(mod);
// First, set the non-error value.
if (!payload_ty.hasRuntimeBitsIgnoreComptime(mod)) {
@@ -5691,10 +5692,10 @@ fn airWrapErrUnionPay(f: *Function, inst: Air.Inst.Index) !CValue {
const ty_op = f.air.instructions.items(.data)[inst].ty_op;
const inst_ty = f.typeOfIndex(inst);
const payload_ty = inst_ty.errorUnionPayload();
const payload_ty = inst_ty.errorUnionPayload(mod);
const payload = try f.resolveInst(ty_op.operand);
const repr_is_err = !payload_ty.hasRuntimeBitsIgnoreComptime(mod);
const err_ty = inst_ty.errorUnionSet();
const err_ty = inst_ty.errorUnionSet(mod);
try reap(f, inst, &.{ty_op.operand});
const writer = f.object.writer();
@@ -5729,8 +5730,8 @@ fn airIsErr(f: *Function, inst: Air.Inst.Index, is_ptr: bool, operator: []const
const operand_ty = f.typeOf(un_op);
const local = try f.allocLocal(inst, Type.bool);
const err_union_ty = if (is_ptr) operand_ty.childType(mod) else operand_ty;
const payload_ty = err_union_ty.errorUnionPayload();
const error_ty = err_union_ty.errorUnionSet();
const payload_ty = err_union_ty.errorUnionPayload(mod);
const error_ty = err_union_ty.errorUnionSet(mod);
try f.writeCValue(writer, local, .Other);
try writer.writeAll(" = ");