mirror of
https://codeberg.org/ziglang/zig.git
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compute LLVMTypes in ParamTypeIterator (#13592)
follow up on #13376 - fixes a bug in the x86_64 C ABI. Co-authored-by: Veikka Tuominen <git@vexu.eu>
This commit is contained in:
Guillaume Wenzek
GitHub
parent
fca776f8f5
commit
476b946802
3 changed files with 77 additions and 137 deletions
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@ -507,3 +507,48 @@ pub const RegisterClass = struct {
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break :blk set;
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};
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};
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const testing = std.testing;
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const Module = @import("../../Module.zig");
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const Value = @import("../../value.zig").Value;
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const builtin = @import("builtin");
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fn _field(comptime tag: Type.Tag, offset: u32) Module.Struct.Field {
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return .{
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.ty = Type.initTag(tag),
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.default_val = Value.initTag(.unreachable_value),
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.abi_align = 0,
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.offset = offset,
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.is_comptime = false,
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};
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}
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test "C_C_D" {
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var fields = Module.Struct.Fields{};
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// const C_C_D = extern struct { v1: i8, v2: i8, v3: f64 };
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try fields.ensureTotalCapacity(testing.allocator, 3);
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defer fields.deinit(testing.allocator);
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fields.putAssumeCapacity("v1", _field(.i8, 0));
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fields.putAssumeCapacity("v2", _field(.i8, 1));
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fields.putAssumeCapacity("v3", _field(.f64, 4));
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var C_C_D_struct = Module.Struct{
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.fields = fields,
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.namespace = undefined,
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.owner_decl = undefined,
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.zir_index = undefined,
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.layout = .Extern,
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.status = .fully_resolved,
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.known_non_opv = true,
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};
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var C_C_D = Type.Payload.Struct{ .data = &C_C_D_struct };
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try testing.expectEqual(
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[_]Class{ .integer, .sse, .none, .none, .none, .none, .none, .none },
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classifySystemV(Type.initPayload(&C_C_D.base), builtin.target, .ret),
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);
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try testing.expectEqual(
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[_]Class{ .integer, .sse, .none, .none, .none, .none, .none, .none },
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classifySystemV(Type.initPayload(&C_C_D.base), builtin.target, .arg),
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);
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}
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@ -1049,60 +1049,20 @@ pub const Object = struct {
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const aggregate = builder.buildInsertValue(partial, len_param, 1, "");
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try args.append(aggregate);
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},
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.multiple_llvm_ints => {
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.multiple_llvm_types => {
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assert(!it.byval_attr);
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const llvm_ints = it.llvm_types_buffer[0..it.llvm_types_len];
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const field_types = it.llvm_types_buffer[0..it.llvm_types_len];
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const param_ty = fn_info.param_types[it.zig_index - 1];
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const param_llvm_ty = try dg.lowerType(param_ty);
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const param_alignment = param_ty.abiAlignment(target);
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const arg_ptr = buildAllocaInner(builder, llvm_func, false, param_llvm_ty, param_alignment, target);
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var field_types_buf: [8]*llvm.Type = undefined;
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const field_types = field_types_buf[0..llvm_ints.len];
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for (llvm_ints) |int_bits, i| {
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field_types[i] = dg.context.intType(int_bits);
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}
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const ints_llvm_ty = dg.context.structType(field_types.ptr, @intCast(c_uint, field_types.len), .False);
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const casted_ptr = builder.buildBitCast(arg_ptr, ints_llvm_ty.pointerType(0), "");
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for (llvm_ints) |_, field_i_usize| {
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const llvm_ty = dg.context.structType(field_types.ptr, @intCast(c_uint, field_types.len), .False);
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const casted_ptr = builder.buildBitCast(arg_ptr, llvm_ty.pointerType(0), "");
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for (field_types) |_, field_i_usize| {
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const field_i = @intCast(c_uint, field_i_usize);
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const param = llvm_func.getParam(llvm_arg_i);
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llvm_arg_i += 1;
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const field_ptr = builder.buildStructGEP(ints_llvm_ty, casted_ptr, field_i, "");
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const store_inst = builder.buildStore(param, field_ptr);
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store_inst.setAlignment(target.cpu.arch.ptrBitWidth() / 8);
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}
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const is_by_ref = isByRef(param_ty);
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const loaded = if (is_by_ref) arg_ptr else l: {
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const load_inst = builder.buildLoad(param_llvm_ty, arg_ptr, "");
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load_inst.setAlignment(param_alignment);
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break :l load_inst;
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};
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try args.append(loaded);
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},
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.multiple_llvm_float => {
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assert(!it.byval_attr);
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const llvm_floats = it.llvm_types_buffer[0..it.llvm_types_len];
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const param_ty = fn_info.param_types[it.zig_index - 1];
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const param_llvm_ty = try dg.lowerType(param_ty);
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const param_alignment = param_ty.abiAlignment(target);
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const arg_ptr = buildAllocaInner(builder, llvm_func, false, param_llvm_ty, param_alignment, target);
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var field_types_buf: [8]*llvm.Type = undefined;
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const field_types = field_types_buf[0..llvm_floats.len];
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for (llvm_floats) |float_bits, i| {
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switch (float_bits) {
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64 => field_types[i] = dg.context.doubleType(),
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80 => field_types[i] = dg.context.x86FP80Type(),
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else => {},
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}
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}
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const floats_llvm_ty = dg.context.structType(field_types.ptr, @intCast(c_uint, field_types.len), .False);
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const casted_ptr = builder.buildBitCast(arg_ptr, floats_llvm_ty.pointerType(0), "");
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for (llvm_floats) |_, field_i_usize| {
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const field_i = @intCast(c_uint, field_i_usize);
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const param = llvm_func.getParam(llvm_arg_i);
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llvm_arg_i += 1;
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const field_ptr = builder.buildStructGEP(floats_llvm_ty, casted_ptr, field_i, "");
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const field_ptr = builder.buildStructGEP(llvm_ty, casted_ptr, field_i, "");
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const store_inst = builder.buildStore(param, field_ptr);
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store_inst.setAlignment(target.cpu.arch.ptrBitWidth() / 8);
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}
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@ -2626,8 +2586,7 @@ pub const DeclGen = struct {
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// No attributes needed for these.
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.no_bits,
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.abi_sized_int,
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.multiple_llvm_ints,
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.multiple_llvm_float,
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.multiple_llvm_types,
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.as_u16,
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.float_array,
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.i32_array,
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@ -3167,25 +3126,8 @@ pub const DeclGen = struct {
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llvm_params.appendAssumeCapacity(ptr_llvm_ty);
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llvm_params.appendAssumeCapacity(len_llvm_ty);
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},
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.multiple_llvm_ints => {
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const llvm_ints = it.llvm_types_buffer[0..it.llvm_types_len];
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try llvm_params.ensureUnusedCapacity(it.llvm_types_len);
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for (llvm_ints) |int_bits| {
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const big_int_ty = dg.context.intType(int_bits);
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llvm_params.appendAssumeCapacity(big_int_ty);
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}
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},
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.multiple_llvm_float => {
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const llvm_ints = it.llvm_types_buffer[0..it.llvm_types_len];
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try llvm_params.ensureUnusedCapacity(it.llvm_types_len);
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for (llvm_ints) |float_bits| {
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const float_ty = switch (float_bits) {
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64 => dg.context.doubleType(),
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80 => dg.context.x86FP80Type(),
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else => unreachable,
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};
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llvm_params.appendAssumeCapacity(float_ty);
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}
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.multiple_llvm_types => {
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try llvm_params.appendSlice(it.llvm_types_buffer[0..it.llvm_types_len]);
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},
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.as_u16 => {
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try llvm_params.append(dg.context.intType(16));
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@ -4824,10 +4766,10 @@ pub const FuncGen = struct {
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llvm_args.appendAssumeCapacity(ptr);
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llvm_args.appendAssumeCapacity(len);
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},
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.multiple_llvm_ints => {
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.multiple_llvm_types => {
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const arg = args[it.zig_index - 1];
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const param_ty = self.air.typeOf(arg);
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const llvm_ints = it.llvm_types_buffer[0..it.llvm_types_len];
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const llvm_types = it.llvm_types_buffer[0..it.llvm_types_len];
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const llvm_arg = try self.resolveInst(arg);
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const is_by_ref = isByRef(param_ty);
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const arg_ptr = if (is_by_ref) llvm_arg else p: {
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@ -4837,51 +4779,13 @@ pub const FuncGen = struct {
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break :p p;
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};
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var field_types_buf: [8]*llvm.Type = undefined;
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const field_types = field_types_buf[0..llvm_ints.len];
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for (llvm_ints) |int_bits, i| {
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field_types[i] = self.dg.context.intType(int_bits);
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}
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const ints_llvm_ty = self.dg.context.structType(field_types.ptr, @intCast(c_uint, field_types.len), .False);
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const casted_ptr = self.builder.buildBitCast(arg_ptr, ints_llvm_ty.pointerType(0), "");
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const llvm_ty = self.dg.context.structType(llvm_types.ptr, @intCast(c_uint, llvm_types.len), .False);
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const casted_ptr = self.builder.buildBitCast(arg_ptr, llvm_ty.pointerType(0), "");
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try llvm_args.ensureUnusedCapacity(it.llvm_types_len);
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for (llvm_ints) |_, i_usize| {
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for (llvm_types) |field_ty, i_usize| {
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const i = @intCast(c_uint, i_usize);
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const field_ptr = self.builder.buildStructGEP(ints_llvm_ty, casted_ptr, i, "");
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const load_inst = self.builder.buildLoad(field_types[i], field_ptr, "");
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load_inst.setAlignment(target.cpu.arch.ptrBitWidth() / 8);
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llvm_args.appendAssumeCapacity(load_inst);
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}
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},
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.multiple_llvm_float => {
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const arg = args[it.zig_index - 1];
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const param_ty = self.air.typeOf(arg);
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const llvm_floats = it.llvm_types_buffer[0..it.llvm_types_len];
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const llvm_arg = try self.resolveInst(arg);
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const is_by_ref = isByRef(param_ty);
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const arg_ptr = if (is_by_ref) llvm_arg else p: {
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const p = self.buildAlloca(llvm_arg.typeOf(), null);
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const store_inst = self.builder.buildStore(llvm_arg, p);
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store_inst.setAlignment(param_ty.abiAlignment(target));
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break :p p;
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};
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var field_types_buf: [8]*llvm.Type = undefined;
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const field_types = field_types_buf[0..llvm_floats.len];
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for (llvm_floats) |float_bits, i| {
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switch (float_bits) {
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64 => field_types[i] = self.dg.context.doubleType(),
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80 => field_types[i] = self.dg.context.x86FP80Type(),
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else => {},
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}
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}
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const floats_llvm_ty = self.dg.context.structType(field_types.ptr, @intCast(c_uint, field_types.len), .False);
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const casted_ptr = self.builder.buildBitCast(arg_ptr, floats_llvm_ty.pointerType(0), "");
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try llvm_args.ensureUnusedCapacity(it.llvm_types_len);
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for (llvm_floats) |_, i_usize| {
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const i = @intCast(c_uint, i_usize);
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const field_ptr = self.builder.buildStructGEP(floats_llvm_ty, casted_ptr, i, "");
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const load_inst = self.builder.buildLoad(field_types[i], field_ptr, "");
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const field_ptr = self.builder.buildStructGEP(llvm_ty, casted_ptr, i, "");
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const load_inst = self.builder.buildLoad(field_ty, field_ptr, "");
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load_inst.setAlignment(target.cpu.arch.ptrBitWidth() / 8);
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llvm_args.appendAssumeCapacity(load_inst);
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}
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@ -10473,7 +10377,7 @@ const ParamTypeIterator = struct {
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llvm_index: u32,
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target: std.Target,
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llvm_types_len: u32,
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llvm_types_buffer: [8]u16,
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llvm_types_buffer: [8]*llvm.Type,
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byval_attr: bool,
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const Lowering = union(enum) {
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@ -10481,8 +10385,7 @@ const ParamTypeIterator = struct {
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byval,
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byref,
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abi_sized_int,
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multiple_llvm_ints,
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multiple_llvm_float,
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multiple_llvm_types,
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slice,
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as_u16,
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float_array: u8,
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@ -10515,7 +10418,7 @@ const ParamTypeIterator = struct {
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it.zig_index += 1;
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return .no_bits;
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}
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const dg = it.dg;
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switch (it.fn_info.cc) {
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.Unspecified, .Inline => {
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it.zig_index += 1;
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@ -10584,28 +10487,28 @@ const ParamTypeIterator = struct {
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it.llvm_index += 1;
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return .byval;
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}
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var llvm_types_buffer: [8]u16 = undefined;
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var llvm_types_buffer: [8]*llvm.Type = undefined;
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var llvm_types_index: u32 = 0;
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for (classes) |class| {
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switch (class) {
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.integer => {
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llvm_types_buffer[llvm_types_index] = 64;
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llvm_types_buffer[llvm_types_index] = dg.context.intType(64);
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llvm_types_index += 1;
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},
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.sse => {
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llvm_types_buffer[llvm_types_index] = 64;
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llvm_types_buffer[llvm_types_index] = dg.context.doubleType();
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llvm_types_index += 1;
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},
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.sseup => {
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llvm_types_buffer[llvm_types_index] = 64;
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llvm_types_buffer[llvm_types_index] = dg.context.doubleType();
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llvm_types_index += 1;
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},
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.x87 => {
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llvm_types_buffer[llvm_types_index] = 80;
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llvm_types_buffer[llvm_types_index] = dg.context.x86FP80Type();
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llvm_types_index += 1;
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},
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.x87up => {
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llvm_types_buffer[llvm_types_index] = 80;
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llvm_types_buffer[llvm_types_index] = dg.context.x86FP80Type();
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llvm_types_index += 1;
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},
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.complex_x87 => {
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@ -10625,7 +10528,7 @@ const ParamTypeIterator = struct {
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it.llvm_types_len = llvm_types_index;
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it.llvm_index += llvm_types_index;
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it.zig_index += 1;
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return if (classes[0] == .integer) .multiple_llvm_ints else .multiple_llvm_float;
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return .multiple_llvm_types;
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},
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},
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.wasm32 => {
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@ -10649,8 +10552,8 @@ const ParamTypeIterator = struct {
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.byval => return .byval,
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.integer => {
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it.llvm_types_len = 1;
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it.llvm_types_buffer[0] = 64;
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return .multiple_llvm_ints;
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it.llvm_types_buffer[0] = dg.context.intType(64);
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return .multiple_llvm_types;
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},
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.double_integer => return Lowering{ .i64_array = 2 },
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}
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@ -851,8 +851,6 @@ pub inline fn expectOk(c_err: c_int) !void {
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/// Tests for Double + Char struct
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const DC = extern struct { v1: f64, v2: u8 };
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test "DC: Zig passes to C" {
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if (builtin.target.cpu.arch == .x86_64 and builtin.target.os.tag != .windows)
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return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isMIPS()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isRISCV()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isPPC()) return error.SkipZigTest;
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@ -866,8 +864,6 @@ test "DC: Zig returns to C" {
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try expectOk(c_assert_ret_DC());
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}
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test "DC: C passes to Zig" {
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if (builtin.target.cpu.arch == .x86_64 and builtin.target.os.tag != .windows)
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return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isMIPS()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isRISCV()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isPPC()) return error.SkipZigTest;
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@ -900,8 +896,7 @@ pub export fn zig_ret_DC() DC {
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const CFF = extern struct { v1: u8, v2: f32, v3: f32 };
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test "CFF: Zig passes to C" {
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if (builtin.target.cpu.arch.isX86() and builtin.target.os.tag != .windows)
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return error.SkipZigTest;
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if (builtin.target.cpu.arch == .x86) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isMIPS()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isPPC()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isPPC64()) return error.SkipZigTest;
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@ -914,8 +909,7 @@ test "CFF: Zig returns to C" {
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try expectOk(c_assert_ret_CFF());
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}
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test "CFF: C passes to Zig" {
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if (builtin.target.cpu.arch.isX86() and builtin.target.os.tag != .windows)
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return error.SkipZigTest;
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if (builtin.target.cpu.arch == .x86) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isMIPS()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isPPC()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isPPC64()) return error.SkipZigTest;
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@ -950,8 +944,7 @@ pub export fn zig_ret_CFF() CFF {
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const PD = extern struct { v1: ?*anyopaque, v2: f64 };
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test "PD: Zig passes to C" {
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if (builtin.target.cpu.arch.isX86() and builtin.target.os.tag != .windows)
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return error.SkipZigTest;
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if (builtin.target.cpu.arch == .x86) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isMIPS()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isPPC()) return error.SkipZigTest;
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if (comptime builtin.cpu.arch.isPPC64()) return error.SkipZigTest;
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|
|
@ -964,8 +957,7 @@ test "PD: Zig returns to C" {
|
|||
try expectOk(c_assert_ret_PD());
|
||||
}
|
||||
test "PD: C passes to Zig" {
|
||||
if (builtin.target.cpu.arch.isX86() and builtin.target.os.tag != .windows)
|
||||
return error.SkipZigTest;
|
||||
if (builtin.target.cpu.arch == .x86) return error.SkipZigTest;
|
||||
if (comptime builtin.cpu.arch.isMIPS()) return error.SkipZigTest;
|
||||
if (comptime builtin.cpu.arch.isPPC()) return error.SkipZigTest;
|
||||
if (comptime builtin.cpu.arch.isPPC64()) return error.SkipZigTest;
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue