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Merge pull request #13756 from jacobly0/cbe-behavior

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cbe: pass more behavior tests
This commit is contained in:
Andrew Kelley 2022-12-04 01:52:04 -05:00 committed by GitHub
commit 19dd6de180
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GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 259 additions and 132 deletions
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17
lib/zig.h
View File

@ -65,8 +65,17 @@ typedef char bool;
#elif zig_has_attribute(aligned)
#define zig_align(alignment) __attribute__((aligned(alignment)))
#elif _MSC_VER
#define zig_align zig_align_unavailable
#else
#error the C compiler being used does not support aligning variables
#define zig_align zig_align_unavailable
#endif
#if zig_has_attribute(aligned)
#define zig_align_fn(alignment) __attribute__((aligned(alignment)))
#elif _MSC_VER
#define zig_align_fn zig_align_fn_unavailable
#else
#define zig_align_fn zig_align_fn_unavailable
#endif
#if zig_has_builtin(unreachable)
@ -81,6 +90,12 @@ typedef char bool;
#define zig_extern extern
#endif
#if zig_has_attribute(alias)
#define zig_export(sig, symbol, name) zig_extern sig __attribute__((alias(symbol)))
#else
#define zig_export(sig, symbol, name) __asm(name " = " symbol)
#endif
#if zig_has_builtin(debugtrap)
#define zig_breakpoint() __builtin_debugtrap()
#elif zig_has_builtin(trap)

341
src/codegen/c.zig
View File

@ -569,7 +569,7 @@ pub const DeclGen = struct {
try writer.writeByte(')');
}
try writer.writeByte('&');
try dg.renderDeclName(writer, decl_index);
try dg.renderDeclName(writer, decl_index, 0);
if (need_typecast) try writer.writeByte(')');
}
@ -1026,11 +1026,11 @@ pub const DeclGen = struct {
},
.function => {
const func = val.castTag(.function).?.data;
try dg.renderDeclName(writer, func.owner_decl);
try dg.renderDeclName(writer, func.owner_decl, 0);
},
.extern_fn => {
const extern_fn = val.castTag(.extern_fn).?.data;
try dg.renderDeclName(writer, extern_fn.owner_decl);
try dg.renderDeclName(writer, extern_fn.owner_decl, 0);
},
.int_u64, .one => {
try writer.writeAll("((");
@ -1356,7 +1356,7 @@ pub const DeclGen = struct {
}
}
fn renderFunctionSignature(dg: *DeclGen, w: anytype, kind: TypedefKind) !void {
fn renderFunctionSignature(dg: *DeclGen, w: anytype, kind: TypedefKind, export_index: u32) !void {
const fn_info = dg.decl.ty.fnInfo();
if (fn_info.cc == .Naked) try w.writeAll("zig_naked ");
if (dg.decl.val.castTag(.function)) |func_payload|
@ -1368,7 +1368,7 @@ pub const DeclGen = struct {
try dg.renderType(w, ret_ty, kind);
try w.writeByte(' ');
try dg.renderDeclName(w, dg.decl_index);
try dg.renderDeclName(w, dg.decl_index, export_index);
try w.writeByte('(');
var index: usize = 0;
@ -1387,6 +1387,7 @@ pub const DeclGen = struct {
try dg.renderType(w, Type.void, kind);
}
try w.writeByte(')');
if (fn_info.alignment > 0) try w.print(" zig_align_fn({})", .{fn_info.alignment});
}
fn renderPtrToFnTypedef(dg: *DeclGen, t: Type) error{ OutOfMemory, AnalysisFail }![]const u8 {
@ -1487,29 +1488,42 @@ pub const DeclGen = struct {
// The forward declaration for T is stored with a key of *const T.
const child_ty = t.childType();
var fqn_buf = std.ArrayList(u8).init(dg.typedefs.allocator);
defer fqn_buf.deinit();
const owner_decl_index = child_ty.getOwnerDecl();
const owner_decl = dg.module.declPtr(owner_decl_index);
try owner_decl.renderFullyQualifiedName(dg.module, fqn_buf.writer());
var buffer = std.ArrayList(u8).init(dg.typedefs.allocator);
defer buffer.deinit();
const bw = buffer.writer();
const tag = switch (child_ty.zigTypeTag()) {
.Struct => "struct ",
.Union => if (child_ty.unionTagTypeSafety()) |_| "struct " else "union ",
.Struct, .ErrorUnion, .Optional => "struct",
.Union => if (child_ty.unionTagTypeSafety()) |_| "struct" else "union",
else => unreachable,
};
const name_begin = buffer.items.len + "typedef ".len + tag.len;
try buffer.writer().print("typedef {s}zig_S_{}__{d} ", .{
tag,
fmtIdent(fqn_buf.items),
@enumToInt(owner_decl_index),
});
const name_end = buffer.items.len - " ".len;
try buffer.ensureUnusedCapacity((name_end - name_begin) + ";\n".len);
try bw.writeAll("typedef ");
try bw.writeAll(tag);
const name_begin = buffer.items.len + " ".len;
try bw.writeAll(" zig_");
switch (child_ty.zigTypeTag()) {
.Struct, .Union => {
var fqn_buf = std.ArrayList(u8).init(dg.typedefs.allocator);
defer fqn_buf.deinit();
const owner_decl_index = child_ty.getOwnerDecl();
const owner_decl = dg.module.declPtr(owner_decl_index);
try owner_decl.renderFullyQualifiedName(dg.module, fqn_buf.writer());
try bw.print("S_{}__{d}", .{ fmtIdent(fqn_buf.items), @enumToInt(owner_decl_index) });
},
.ErrorUnion => {
try bw.print("E_{}", .{typeToCIdentifier(child_ty.errorUnionPayload(), dg.module)});
},
.Optional => {
var opt_buf: Type.Payload.ElemType = undefined;
try bw.print("Q_{}", .{typeToCIdentifier(child_ty.optionalChild(&opt_buf), dg.module)});
},
else => unreachable,
}
const name_end = buffer.items.len;
try buffer.ensureUnusedCapacity(" ".len + (name_end - name_begin) + ";\n".len);
buffer.appendAssumeCapacity(' ');
buffer.appendSliceAssumeCapacity(buffer.items[name_begin..name_end]);
buffer.appendSliceAssumeCapacity(";\n");
@ -1569,7 +1583,11 @@ pub const DeclGen = struct {
return name;
}
fn renderTupleTypedef(dg: *DeclGen, t: Type) error{ OutOfMemory, AnalysisFail }![]const u8 {
fn renderTupleTypedef(
dg: *DeclGen,
t: Type,
kind: TypedefKind,
) error{ OutOfMemory, AnalysisFail }![]const u8 {
var buffer = std.ArrayList(u8).init(dg.typedefs.allocator);
defer buffer.deinit();
@ -1581,7 +1599,7 @@ pub const DeclGen = struct {
if (!field_ty.hasRuntimeBits() or fields.values[i].tag() != .unreachable_value) continue;
try buffer.append(' ');
try dg.renderTypeAndName(buffer.writer(), field_ty, .{ .field = field_id }, .Mut, 0, .Complete);
try dg.renderTypeAndName(buffer.writer(), field_ty, .{ .field = field_id }, .Mut, 0, kind);
try buffer.appendSlice(";\n");
field_id += 1;
@ -1669,6 +1687,11 @@ pub const DeclGen = struct {
fn renderErrorUnionTypedef(dg: *DeclGen, t: Type) error{ OutOfMemory, AnalysisFail }![]const u8 {
assert(t.errorUnionSet().tag() == .anyerror);
var ptr_pl = Type.Payload.ElemType{ .base = .{ .tag = .single_const_pointer }, .data = t };
const ptr_ty = Type.initPayload(&ptr_pl.base);
const name = dg.getTypedefName(ptr_ty) orelse
try dg.renderFwdTypedef(ptr_ty);
var buffer = std.ArrayList(u8).init(dg.typedefs.allocator);
defer buffer.deinit();
const bw = buffer.writer();
@ -1681,7 +1704,9 @@ pub const DeclGen = struct {
const target = dg.module.getTarget();
const payload_align = payload_ty.abiAlignment(target);
const error_align = error_ty.abiAlignment(target);
try bw.writeAll("typedef struct {\n ");
try bw.writeAll("struct ");
try bw.writeAll(name);
try bw.writeAll(" {\n ");
if (error_align > payload_align) {
try dg.renderTypeAndName(bw, payload_ty, payload_name, .Mut, 0, .Complete);
try bw.writeAll(";\n ");
@ -1691,15 +1716,10 @@ pub const DeclGen = struct {
try bw.writeAll(";\n ");
try dg.renderTypeAndName(bw, payload_ty, payload_name, .Mut, 0, .Complete);
}
try bw.writeAll(";\n} ");
const name_begin = buffer.items.len;
try bw.print("zig_E_{}", .{typeToCIdentifier(payload_ty, dg.module)});
const name_end = buffer.items.len;
try bw.writeAll(";\n");
try bw.writeAll(";\n};\n");
const rendered = try buffer.toOwnedSlice();
errdefer dg.typedefs.allocator.free(rendered);
const name = rendered[name_begin..name_end];
try dg.typedefs.ensureUnusedCapacity(1);
dg.typedefs.putAssumeCapacityNoClobber(
@ -1743,24 +1763,29 @@ pub const DeclGen = struct {
return name;
}
fn renderOptionalTypedef(dg: *DeclGen, t: Type, child_type: Type) error{ OutOfMemory, AnalysisFail }![]const u8 {
fn renderOptionalTypedef(dg: *DeclGen, t: Type) error{ OutOfMemory, AnalysisFail }![]const u8 {
var ptr_pl = Type.Payload.ElemType{ .base = .{ .tag = .single_const_pointer }, .data = t };
const ptr_ty = Type.initPayload(&ptr_pl.base);
const name = dg.getTypedefName(ptr_ty) orelse
try dg.renderFwdTypedef(ptr_ty);
var buffer = std.ArrayList(u8).init(dg.typedefs.allocator);
defer buffer.deinit();
const bw = buffer.writer();
try bw.writeAll("typedef struct {\n ");
try dg.renderTypeAndName(bw, child_type, .{ .identifier = "payload" }, .Mut, 0, .Complete);
var opt_buf: Type.Payload.ElemType = undefined;
const child_ty = t.optionalChild(&opt_buf);
try bw.writeAll("struct ");
try bw.writeAll(name);
try bw.writeAll(" {\n");
try dg.renderTypeAndName(bw, child_ty, .{ .identifier = "payload" }, .Mut, 0, .Complete);
try bw.writeAll(";\n ");
try dg.renderTypeAndName(bw, Type.bool, .{ .identifier = "is_null" }, .Mut, 0, .Complete);
try bw.writeAll(";\n} ");
const name_begin = buffer.items.len;
try bw.print("zig_Q_{}", .{typeToCIdentifier(child_type, dg.module)});
const name_end = buffer.items.len;
try bw.writeAll(";\n");
try bw.writeAll(";\n};\n");
const rendered = try buffer.toOwnedSlice();
errdefer dg.typedefs.allocator.free(rendered);
const name = rendered[name_begin..name_end];
try dg.typedefs.ensureUnusedCapacity(1);
dg.typedefs.putAssumeCapacityNoClobber(
@ -1899,18 +1924,34 @@ pub const DeclGen = struct {
},
.Optional => {
var opt_buf: Type.Payload.ElemType = undefined;
const child_type = t.optionalChild(&opt_buf);
const child_ty = t.optionalChild(&opt_buf);
if (!child_type.hasRuntimeBitsIgnoreComptime())
if (!child_ty.hasRuntimeBitsIgnoreComptime())
return dg.renderType(w, Type.bool, kind);
if (t.optionalReprIsPayload())
return dg.renderType(w, child_type, kind);
return dg.renderType(w, child_ty, kind);
const name = dg.getTypedefName(t) orelse
try dg.renderOptionalTypedef(t, child_type);
switch (kind) {
.Complete => {
const name = dg.getTypedefName(t) orelse
try dg.renderOptionalTypedef(t);
return w.writeAll(name);
try w.writeAll(name);
},
.Forward => {
var ptr_pl = Type.Payload.ElemType{
.base = .{ .tag = .single_const_pointer },
.data = t,
};
const ptr_ty = Type.initPayload(&ptr_pl.base);
const name = dg.getTypedefName(ptr_ty) orelse
try dg.renderFwdTypedef(ptr_ty);
try w.writeAll(name);
},
}
},
.ErrorUnion => {
const payload_ty = t.errorUnionPayload();
@ -1923,10 +1964,26 @@ pub const DeclGen = struct {
};
const error_union_ty = Type.initPayload(&error_union_pl.base);
const name = dg.getTypedefName(error_union_ty) orelse
try dg.renderErrorUnionTypedef(error_union_ty);
switch (kind) {
.Complete => {
const name = dg.getTypedefName(error_union_ty) orelse
try dg.renderErrorUnionTypedef(error_union_ty);
return w.writeAll(name);
try w.writeAll(name);
},
.Forward => {
var ptr_pl = Type.Payload.ElemType{
.base = .{ .tag = .single_const_pointer },
.data = error_union_ty,
};
const ptr_ty = Type.initPayload(&ptr_pl.base);
const name = dg.getTypedefName(ptr_ty) orelse
try dg.renderFwdTypedef(ptr_ty);
try w.writeAll(name);
},
}
},
.Struct, .Union => |tag| if (t.containerLayout() == .Packed) {
if (t.castTag(.@"struct")) |struct_obj| {
@ -1964,28 +2021,31 @@ pub const DeclGen = struct {
const tuple_ty = Type.initPayload(&tuple_pl.base);
const name = dg.getTypedefName(tuple_ty) orelse
try dg.renderTupleTypedef(tuple_ty);
try dg.renderTupleTypedef(tuple_ty, kind);
try w.writeAll(name);
} else if (kind == .Complete) {
const name = dg.getTypedefName(t) orelse switch (tag) {
.Struct => try dg.renderStructTypedef(t),
.Union => try dg.renderUnionTypedef(t),
else => unreachable,
};
} else switch (kind) {
.Complete => {
const name = dg.getTypedefName(t) orelse switch (tag) {
.Struct => try dg.renderStructTypedef(t),
.Union => try dg.renderUnionTypedef(t),
else => unreachable,
};
try w.writeAll(name);
} else {
var ptr_pl = Type.Payload.ElemType{
.base = .{ .tag = .single_const_pointer },
.data = t,
};
const ptr_ty = Type.initPayload(&ptr_pl.base);
try w.writeAll(name);
},
.Forward => {
var ptr_pl = Type.Payload.ElemType{
.base = .{ .tag = .single_const_pointer },
.data = t,
};
const ptr_ty = Type.initPayload(&ptr_pl.base);
const name = dg.getTypedefName(ptr_ty) orelse
try dg.renderFwdTypedef(ptr_ty);
const name = dg.getTypedefName(ptr_ty) orelse
try dg.renderFwdTypedef(ptr_ty);
try w.writeAll(name);
try w.writeAll(name);
},
},
.Enum => {
// For enums, we simply use the integer tag type.
@ -2213,10 +2273,10 @@ pub const DeclGen = struct {
.constant => unreachable,
.arg => |i| return w.print("a{d}", .{i}),
.field => |i| return w.print("f{d}", .{i}),
.decl => |decl| return dg.renderDeclName(w, decl),
.decl => |decl| return dg.renderDeclName(w, decl, 0),
.decl_ref => |decl| {
try w.writeByte('&');
return dg.renderDeclName(w, decl);
return dg.renderDeclName(w, decl, 0);
},
.undef => |ty| return dg.renderValue(w, ty, Value.undef, .Other),
.identifier => |ident| return w.print("{ }", .{fmtIdent(ident)}),
@ -2234,10 +2294,10 @@ pub const DeclGen = struct {
.field => |i| return w.print("f{d}", .{i}),
.decl => |decl| {
try w.writeAll("(*");
try dg.renderDeclName(w, decl);
try dg.renderDeclName(w, decl, 0);
return w.writeByte(')');
},
.decl_ref => |decl| return dg.renderDeclName(w, decl),
.decl_ref => |decl| return dg.renderDeclName(w, decl, 0),
.undef => unreachable,
.identifier => |ident| return w.print("(*{ })", .{fmtIdent(ident)}),
.bytes => |bytes| {
@ -2269,12 +2329,12 @@ pub const DeclGen = struct {
try dg.writeCValue(writer, member);
}
fn renderDeclName(dg: *DeclGen, writer: anytype, decl_index: Decl.Index) !void {
fn renderDeclName(dg: *DeclGen, writer: anytype, decl_index: Decl.Index, export_index: u32) !void {
const decl = dg.module.declPtr(decl_index);
dg.module.markDeclAlive(decl);
if (dg.module.decl_exports.get(decl_index)) |exports| {
return writer.writeAll(exports.items[0].options.name);
return writer.writeAll(exports.items[export_index].options.name);
} else if (decl.isExtern()) {
return writer.writeAll(mem.sliceTo(decl.name, 0));
} else if (dg.module.test_functions.get(decl_index)) |_| {
@ -2422,24 +2482,44 @@ pub fn genErrDecls(o: *Object) !void {
try writer.writeAll("};\n");
}
fn genExports(o: *Object) !void {
const tracy = trace(@src());
defer tracy.end();
const fwd_decl_writer = o.dg.fwd_decl.writer();
if (o.dg.module.decl_exports.get(o.dg.decl_index)) |exports| for (exports.items[1..]) |@"export", i| {
try fwd_decl_writer.writeAll("zig_export(");
try o.dg.renderFunctionSignature(fwd_decl_writer, .Forward, @intCast(u32, 1 + i));
try fwd_decl_writer.print(", {s}, {s});\n", .{
fmtStringLiteral(exports.items[0].options.name),
fmtStringLiteral(@"export".options.name),
});
};
}
pub fn genFunc(f: *Function) !void {
const tracy = trace(@src());
defer tracy.end();
const o = &f.object;
const tv: TypedValue = .{
.ty = o.dg.decl.ty,
.val = o.dg.decl.val,
};
o.code_header = std.ArrayList(u8).init(f.object.dg.gpa);
defer o.code_header.deinit();
const is_global = o.dg.module.decl_exports.contains(f.func.owner_decl);
const is_global = o.dg.declIsGlobal(tv);
const fwd_decl_writer = o.dg.fwd_decl.writer();
try fwd_decl_writer.writeAll(if (is_global) "zig_extern " else "static ");
try o.dg.renderFunctionSignature(fwd_decl_writer, .Forward);
try o.dg.renderFunctionSignature(fwd_decl_writer, .Forward, 0);
try fwd_decl_writer.writeAll(";\n");
try genExports(o);
try o.indent_writer.insertNewline();
if (!is_global) try o.writer().writeAll("static ");
try o.dg.renderFunctionSignature(o.writer(), .Complete);
try o.dg.renderFunctionSignature(o.writer(), .Complete, 0);
try o.writer().writeByte(' ');
// In case we need to use the header, populate it with a copy of the function
@ -2474,23 +2554,22 @@ pub fn genDecl(o: *Object) !void {
if (tv.val.tag() == .extern_fn) {
const fwd_decl_writer = o.dg.fwd_decl.writer();
try fwd_decl_writer.writeAll("zig_extern ");
try o.dg.renderFunctionSignature(fwd_decl_writer, .Forward);
try o.dg.renderFunctionSignature(fwd_decl_writer, .Forward, 0);
try fwd_decl_writer.writeAll(";\n");
try genExports(o);
} else if (tv.val.castTag(.variable)) |var_payload| {
const variable: *Module.Var = var_payload.data;
const is_global = o.dg.declIsGlobal(tv) or variable.is_extern;
const fwd_decl_writer = o.dg.fwd_decl.writer();
const decl_c_value: CValue = if (is_global) .{
.bytes = mem.span(o.dg.decl.name),
} else .{
.decl = o.dg.decl_index,
};
const decl_c_value = CValue{ .decl = o.dg.decl_index };
try fwd_decl_writer.writeAll(if (is_global) "zig_extern " else "static ");
if (variable.is_threadlocal) try fwd_decl_writer.writeAll("zig_threadlocal ");
try o.dg.renderTypeAndName(fwd_decl_writer, o.dg.decl.ty, decl_c_value, .Mut, o.dg.decl.@"align", .Complete);
try fwd_decl_writer.writeAll(";\n");
try genExports(o);
if (variable.is_extern) return;
@ -2536,7 +2615,7 @@ pub fn genHeader(dg: *DeclGen) error{ AnalysisFail, OutOfMemory }!void {
const is_global = dg.declIsGlobal(tv);
if (is_global) {
try writer.writeAll("zig_extern ");
try dg.renderFunctionSignature(writer, .Complete);
try dg.renderFunctionSignature(writer, .Complete, 0);
try dg.fwd_decl.appendSlice(";\n");
}
},
@ -3676,7 +3755,7 @@ fn airCall(
};
};
name = f.object.dg.module.declPtr(fn_decl).name;
try f.object.dg.renderDeclName(writer, fn_decl);
try f.object.dg.renderDeclName(writer, fn_decl, 0);
break :callee;
}
// Fall back to function pointer call.
@ -4195,7 +4274,7 @@ fn airAsm(f: *Function, inst: Air.Inst.Index) !CValue {
}
}
{
const asm_source = std.mem.sliceAsBytes(f.air.extra[extra_i..])[0..extra.data.source_len];
const asm_source = mem.sliceAsBytes(f.air.extra[extra_i..])[0..extra.data.source_len];
var stack = std.heap.stackFallback(256, f.object.dg.gpa);
const allocator = stack.get();
@ -4204,29 +4283,43 @@ fn airAsm(f: *Function, inst: Air.Inst.Index) !CValue {
var src_i: usize = 0;
var dst_i: usize = 0;
while (src_i < asm_source.len) : (src_i += 1) {
fixed_asm_source[dst_i] = asm_source[src_i];
dst_i += 1;
if (asm_source[src_i] != '%' or src_i + 1 >= asm_source.len) continue;
while (true) {
const literal = mem.sliceTo(asm_source[src_i..], '%');
src_i += literal.len;
mem.copy(u8, fixed_asm_source[dst_i..], literal);
dst_i += literal.len;
if (src_i >= asm_source.len) break;
src_i += 1;
if (src_i >= asm_source.len)
return f.fail("CBE: invalid inline asm string '{s}'", .{asm_source});
fixed_asm_source[dst_i] = '%';
dst_i += 1;
if (asm_source[src_i] != '[') {
// This handles %%
// This also handles %%
fixed_asm_source[dst_i] = asm_source[src_i];
src_i += 1;
dst_i += 1;
continue;
}
const len = std.mem.indexOfScalar(u8, asm_source[src_i + 1 ..], ']') orelse
return f.fail("CBE: invalid inline asm string '{s}'", .{asm_source});
if (std.mem.indexOfScalar(u8, asm_source[src_i + 1 ..][0..len], ':')) |colon| {
const modifier = asm_source[src_i + 1 + colon + 1 .. src_i + 1 + len];
std.mem.copy(u8, fixed_asm_source[dst_i..], modifier);
dst_i += modifier.len;
const name = asm_source[src_i .. src_i + 1 + colon];
std.mem.copy(u8, fixed_asm_source[dst_i..], name);
const desc = mem.sliceTo(asm_source[src_i..], ']');
if (mem.indexOfScalar(u8, desc, ':')) |colon| {
const name = desc[0..colon];
const modifier = desc[colon + 1 ..];
mem.copy(u8, fixed_asm_source[dst_i..], modifier);
dst_i += modifier.len;
mem.copy(u8, fixed_asm_source[dst_i..], name);
dst_i += name.len;
src_i += len;
src_i += desc.len;
if (src_i >= asm_source.len)
return f.fail("CBE: invalid inline asm string '{s}'", .{asm_source});
}
}
@ -4535,9 +4628,18 @@ fn structFieldPtr(f: *Function, inst: Air.Inst.Index, struct_ptr_ty: Type, struc
else => .none,
};
const field_name: CValue = switch (struct_ty.tag()) {
const FieldLoc = union(enum) {
begin: void,
field: CValue,
end: void,
};
const field_loc = switch (struct_ty.tag()) {
.@"struct" => switch (struct_ty.containerLayout()) {
.Auto, .Extern => CValue{ .identifier = struct_ty.structFieldName(index) },
.Auto, .Extern => for (struct_ty.structFields().values()[index..]) |field, offset| {
if (field.ty.hasRuntimeBitsIgnoreComptime()) break FieldLoc{ .field = .{
.identifier = struct_ty.structFieldName(index + offset),
} };
} else @as(FieldLoc, .end),
.Packed => if (field_ptr_info.data.host_size == 0) {
const target = f.object.dg.module.getTarget();
@ -4562,40 +4664,43 @@ fn structFieldPtr(f: *Function, inst: Air.Inst.Index, struct_ptr_ty: Type, struc
try f.writeCValue(writer, struct_ptr, .Other);
try writer.print(")[{}];\n", .{try f.fmtIntLiteral(Type.usize, byte_offset_val)});
return local;
} else @as(CValue, CValue.none), // this @as is needed because of a stage1 bug
} else @as(FieldLoc, .begin),
},
.@"union", .union_safety_tagged, .union_tagged => if (struct_ty.containerLayout() == .Packed) {
try f.writeCValue(writer, struct_ptr, .Other);
try writer.writeAll(";\n");
return local;
} else .{
} else if (field_ty.hasRuntimeBitsIgnoreComptime()) FieldLoc{ .field = .{
.identifier = struct_ty.unionFields().keys()[index],
},
} } else @as(FieldLoc, .end),
.tuple, .anon_struct => field_name: {
const tuple = struct_ty.tupleFields();
if (tuple.values[index].tag() != .unreachable_value) return CValue.none;
var id: usize = 0;
for (tuple.values[0..index]) |value|
id += @boolToInt(value.tag() == .unreachable_value);
break :field_name .{ .field = id };
break :field_name for (tuple.values) |value, i| {
if (value.tag() != .unreachable_value) continue;
if (!tuple.types[i].hasRuntimeBitsIgnoreComptime()) continue;
if (i >= index) break FieldLoc{ .field = .{ .field = id } };
id += 1;
} else @as(FieldLoc, .end);
},
else => unreachable,
};
if (field_ty.hasRuntimeBitsIgnoreComptime()) {
try writer.writeByte('&');
if (extra_name != .none) {
try writer.writeByte('&');
switch (field_loc) {
.begin, .end => {
try writer.writeByte('(');
try f.writeCValue(writer, struct_ptr, .Other);
try writer.print(")[{}]", .{@boolToInt(field_loc == .end)});
},
.field => |field| if (extra_name != .none) {
try f.writeCValueDerefMember(writer, struct_ptr, extra_name);
if (field_name != .none) {
try writer.writeByte('.');
try f.writeCValue(writer, field_name, .Other);
}
} else if (field_name != .none)
try f.writeCValueDerefMember(writer, struct_ptr, field_name)
else
try f.writeCValueDeref(writer, struct_ptr);
} else try f.writeCValue(writer, struct_ptr, .Other);
try writer.writeByte('.');
try f.writeCValue(writer, field, .Other);
} else try f.writeCValueDerefMember(writer, struct_ptr, field),
}
try writer.writeAll(";\n");
return local;
}

26
src/link/C.zig
View File

@ -290,9 +290,17 @@ pub fn flushModule(self: *C, comp: *Compilation, prog_node: *std.Progress.Node)
f.remaining_decls.putAssumeCapacityNoClobber(decl_index, {});
}
while (f.remaining_decls.popOrNull()) |kv| {
const decl_index = kv.key;
try self.flushDecl(&f, decl_index);
{
var export_names = std.StringHashMapUnmanaged(void){};
defer export_names.deinit(gpa);
try export_names.ensureTotalCapacity(gpa, @intCast(u32, module.decl_exports.entries.len));
for (module.decl_exports.values()) |exports| for (exports.items) |@"export"|
try export_names.put(gpa, @"export".options.name, {});
while (f.remaining_decls.popOrNull()) |kv| {
const decl_index = kv.key;
try self.flushDecl(&f, decl_index, export_names);
}
}
f.all_buffers.items[typedef_index] = .{
@ -415,7 +423,12 @@ fn flushErrDecls(self: *C, f: *Flush) FlushDeclError!void {
}
/// Assumes `decl` was in the `remaining_decls` set, and has already been removed.
fn flushDecl(self: *C, f: *Flush, decl_index: Module.Decl.Index) FlushDeclError!void {
fn flushDecl(
self: *C,
f: *Flush,
decl_index: Module.Decl.Index,
export_names: std.StringHashMapUnmanaged(void),
) FlushDeclError!void {
const module = self.base.options.module.?;
const decl = module.declPtr(decl_index);
// Before flushing any particular Decl we must ensure its
@ -423,7 +436,7 @@ fn flushDecl(self: *C, f: *Flush, decl_index: Module.Decl.Index) FlushDeclError!
// file comes out correctly.
for (decl.dependencies.keys()) |dep| {
if (f.remaining_decls.swapRemove(dep)) {
try flushDecl(self, f, dep);
try flushDecl(self, f, dep, export_names);
}
}
@ -432,7 +445,8 @@ fn flushDecl(self: *C, f: *Flush, decl_index: Module.Decl.Index) FlushDeclError!
try self.flushTypedefs(f, decl_block.typedefs);
try f.all_buffers.ensureUnusedCapacity(gpa, 2);
f.appendBufAssumeCapacity(decl_block.fwd_decl.items);
if (!(decl.isExtern() and export_names.contains(mem.span(decl.name))))
f.appendBufAssumeCapacity(decl_block.fwd_decl.items);
}
pub fn flushEmitH(module: *Module) !void {

1
test/behavior/align.zig
View File

@ -520,7 +520,6 @@ test "align(@alignOf(T)) T does not force resolution of T" {
test "align(N) on functions" {
if (builtin.zig_backend == .stage1) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO

1
test/behavior/basic.zig
View File

@ -788,7 +788,6 @@ test "extern variable with non-pointer opaque type" {
return error.SkipZigTest;
}
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO

1
test/behavior/bugs/12680.zig
View File

@ -8,7 +8,6 @@ extern fn test_func() callconv(.C) usize;
test "export a function twice" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;

1
test/behavior/bugs/3112.zig
View File

@ -14,7 +14,6 @@ fn prev(p: ?State) void {
test "zig test crash" {
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
if (builtin.zig_backend == .stage1) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
var global: State = undefined;
global.enter = prev;

1
test/behavior/bugs/529.zig
View File

@ -11,7 +11,6 @@ comptime {
const builtin = @import("builtin");
test "issue 529 fixed" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO

1
test/behavior/optional.zig
View File

@ -184,7 +184,6 @@ test "nested orelse" {
}
test "self-referential struct through a slice of optional" {
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
const S = struct {

1
test/behavior/struct.zig
View File

@ -1390,7 +1390,6 @@ test "address of zero-bit field is equal to address of only field" {
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
{
const A = struct { b: void = {}, u: u8 };