mirror of
https://github.com/ziglang/zig.git
synced 2026-02-13 12:59:04 +00:00
stage2: implement airArrayToSlice for x86_64
* implement `genSetStack` for `ptr_stack_offset` * handle `ptr_add` * implement storing from register into pointer in register * split alignment and array tests into those that pass on x86_64 and those that do not * pass more tests on x86_64
This commit is contained in:
Jakub Konka
parent
79628d48a4
commit
9b715cb462
@ -1659,6 +1659,18 @@ fn store(self: *Self, ptr: MCValue, value: MCValue, ptr_ty: Type, value_ty: Type
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},
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}
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},
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.register => |src_reg| {
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const abi_size = value_ty.abiSize(self.target.*);
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_ = try self.addInst(.{
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.tag = .mov,
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.ops = (Mir.Ops{
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.reg1 = reg.to64(),
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.reg2 = registerAlias(src_reg, @intCast(u32, abi_size)),
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.flags = 0b10,
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}).encode(),
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.data = .{ .imm = 0 },
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});
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},
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else => |other| {
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return self.fail("TODO implement set pointee with {}", .{other});
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},
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@ -1822,7 +1834,7 @@ fn genBinMathOp(self: *Self, inst: Air.Inst.Index, op_lhs: Air.Inst.Ref, op_rhs:
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const dst_ty = self.air.typeOfIndex(inst);
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const air_tags = self.air.instructions.items(.tag);
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switch (air_tags[inst]) {
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.add, .addwrap => try self.genBinMathOpMir(.add, dst_ty, .unsigned, dst_mcv, src_mcv),
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.add, .addwrap, .ptr_add => try self.genBinMathOpMir(.add, dst_ty, .unsigned, dst_mcv, src_mcv),
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.bool_or, .bit_or => try self.genBinMathOpMir(.@"or", dst_ty, .unsigned, dst_mcv, src_mcv),
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.bool_and, .bit_and => try self.genBinMathOpMir(.@"and", dst_ty, .unsigned, dst_mcv, src_mcv),
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.sub, .subwrap => try self.genBinMathOpMir(.sub, dst_ty, .unsigned, dst_mcv, src_mcv),
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@ -3125,7 +3137,6 @@ fn setRegOrMem(self: *Self, ty: Type, loc: MCValue, val: MCValue) !void {
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fn genSetStack(self: *Self, ty: Type, stack_offset: u32, mcv: MCValue) InnerError!void {
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switch (mcv) {
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.dead => unreachable,
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.ptr_stack_offset => unreachable,
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.ptr_embedded_in_code => unreachable,
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.unreach, .none => return, // Nothing to do.
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.undef => {
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@ -3241,7 +3252,9 @@ fn genSetStack(self: *Self, ty: Type, stack_offset: u32, mcv: MCValue) InnerErro
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}
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return self.fail("TODO implement memcpy for setting stack from {}", .{mcv});
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},
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.stack_offset => |off| {
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.ptr_stack_offset,
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.stack_offset,
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=> |off| {
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if (stack_offset == off) {
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// Copy stack variable to itself; nothing to do.
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return;
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@ -3618,10 +3631,16 @@ fn airBitCast(self: *Self, inst: Air.Inst.Index) !void {
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fn airArrayToSlice(self: *Self, inst: Air.Inst.Index) !void {
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const ty_op = self.air.instructions.items(.data)[inst].ty_op;
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const result: MCValue = if (self.liveness.isUnused(inst))
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.dead
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else
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return self.fail("TODO implement airArrayToSlice for {}", .{self.target.cpu.arch});
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const ptr_ty = self.air.typeOf(ty_op.operand);
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const ptr = try self.resolveInst(ty_op.operand);
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const result: MCValue = if (self.liveness.isUnused(inst)) .dead else blk: {
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const stack_offset = try self.allocMem(inst, 16, 16);
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const array_ty = ptr_ty.childType();
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const array_len = array_ty.arrayLenIncludingSentinel();
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try self.genSetStack(Type.initTag(.usize), stack_offset + 8, ptr);
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try self.genSetStack(Type.initTag(.u64), stack_offset + 16, .{ .immediate = array_len });
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break :blk .{ .stack_offset = stack_offset };
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};
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return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
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}
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@ -17,195 +17,201 @@ test {
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_ = @import("behavior/bugs/655.zig");
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_ = @import("behavior/bool.zig");
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if (builtin.zig_backend != .stage2_arm and builtin.zig_backend != .stage2_x86_64) {
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// Tests that pass for stage1, llvm backend, C backend, wasm backend.
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_ = @import("behavior/align.zig");
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_ = @import("behavior/array.zig");
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_ = @import("behavior/basic.zig");
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_ = @import("behavior/bitcast.zig");
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_ = @import("behavior/bugs/624.zig");
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_ = @import("behavior/bugs/704.zig");
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_ = @import("behavior/bugs/1486.zig");
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_ = @import("behavior/bugs/2692.zig");
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_ = @import("behavior/bugs/2889.zig");
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_ = @import("behavior/bugs/3046.zig");
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_ = @import("behavior/bugs/3586.zig");
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_ = @import("behavior/bugs/4560.zig");
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_ = @import("behavior/bugs/4769_a.zig");
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_ = @import("behavior/bugs/4769_b.zig");
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_ = @import("behavior/bugs/4954.zig");
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_ = @import("behavior/byval_arg_var.zig");
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_ = @import("behavior/call.zig");
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_ = @import("behavior/cast.zig");
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_ = @import("behavior/defer.zig");
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_ = @import("behavior/enum.zig");
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_ = @import("behavior/error.zig");
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_ = @import("behavior/for.zig");
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_ = @import("behavior/generics.zig");
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_ = @import("behavior/if.zig");
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_ = @import("behavior/import.zig");
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_ = @import("behavior/incomplete_struct_param_tld.zig");
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_ = @import("behavior/inttoptr.zig");
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_ = @import("behavior/member_func.zig");
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_ = @import("behavior/null.zig");
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_ = @import("behavior/optional.zig");
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_ = @import("behavior/pointers.zig");
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_ = @import("behavior/ptrcast.zig");
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_ = @import("behavior/ref_var_in_if_after_if_2nd_switch_prong.zig");
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_ = @import("behavior/src.zig");
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_ = @import("behavior/struct.zig");
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_ = @import("behavior/this.zig");
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_ = @import("behavior/truncate.zig");
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_ = @import("behavior/try.zig");
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_ = @import("behavior/undefined.zig");
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_ = @import("behavior/underscore.zig");
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_ = @import("behavior/usingnamespace.zig");
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_ = @import("behavior/void.zig");
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_ = @import("behavior/while.zig");
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if (builtin.zig_backend != .stage2_arm) {
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// Tests that pass for stage1, llvm backend, C backend, wasm backend and x86_64 backend.
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_ = @import("behavior/align_simple.zig");
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_ = @import("behavior/array_simple.zig");
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if (builtin.zig_backend != .stage2_wasm) {
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// Tests that pass for stage1, llvm backend, C backend
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_ = @import("behavior/cast_int.zig");
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_ = @import("behavior/int128.zig");
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_ = @import("behavior/translate_c_macros.zig");
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if (builtin.zig_backend != .stage2_arm and builtin.zig_backend != .stage2_x86_64) {
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// Tests that pass for stage1, llvm backend, C backend, wasm backend.
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_ = @import("behavior/align.zig");
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_ = @import("behavior/array.zig");
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_ = @import("behavior/basic.zig");
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_ = @import("behavior/bitcast.zig");
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_ = @import("behavior/bugs/624.zig");
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_ = @import("behavior/bugs/704.zig");
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_ = @import("behavior/bugs/1486.zig");
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_ = @import("behavior/bugs/2692.zig");
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_ = @import("behavior/bugs/2889.zig");
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_ = @import("behavior/bugs/3046.zig");
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_ = @import("behavior/bugs/3586.zig");
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_ = @import("behavior/bugs/4560.zig");
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_ = @import("behavior/bugs/4769_a.zig");
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_ = @import("behavior/bugs/4769_b.zig");
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_ = @import("behavior/bugs/4954.zig");
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_ = @import("behavior/byval_arg_var.zig");
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_ = @import("behavior/call.zig");
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_ = @import("behavior/cast.zig");
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_ = @import("behavior/defer.zig");
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_ = @import("behavior/enum.zig");
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_ = @import("behavior/error.zig");
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_ = @import("behavior/for.zig");
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_ = @import("behavior/generics.zig");
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_ = @import("behavior/if.zig");
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_ = @import("behavior/import.zig");
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_ = @import("behavior/incomplete_struct_param_tld.zig");
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_ = @import("behavior/inttoptr.zig");
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_ = @import("behavior/member_func.zig");
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_ = @import("behavior/null.zig");
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_ = @import("behavior/optional.zig");
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_ = @import("behavior/pointers.zig");
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_ = @import("behavior/ptrcast.zig");
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_ = @import("behavior/ref_var_in_if_after_if_2nd_switch_prong.zig");
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_ = @import("behavior/src.zig");
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_ = @import("behavior/struct.zig");
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_ = @import("behavior/this.zig");
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_ = @import("behavior/truncate.zig");
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_ = @import("behavior/try.zig");
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_ = @import("behavior/undefined.zig");
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_ = @import("behavior/underscore.zig");
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_ = @import("behavior/usingnamespace.zig");
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_ = @import("behavior/void.zig");
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_ = @import("behavior/while.zig");
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if (builtin.zig_backend != .stage2_c) {
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// Tests that pass for stage1 and the llvm backend.
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_ = @import("behavior/align_llvm.zig");
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_ = @import("behavior/alignof.zig");
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_ = @import("behavior/array_llvm.zig");
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_ = @import("behavior/atomics.zig");
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_ = @import("behavior/basic_llvm.zig");
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_ = @import("behavior/bit_shifting.zig");
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_ = @import("behavior/bugs/394.zig");
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_ = @import("behavior/bugs/656.zig");
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_ = @import("behavior/bugs/1277.zig");
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_ = @import("behavior/bugs/1310.zig");
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_ = @import("behavior/bugs/1381.zig");
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_ = @import("behavior/bugs/1500.zig");
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_ = @import("behavior/bugs/1735.zig");
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_ = @import("behavior/bugs/1741.zig");
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_ = @import("behavior/bugs/2006.zig");
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_ = @import("behavior/bugs/2578.zig");
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_ = @import("behavior/bugs/3007.zig");
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_ = @import("behavior/bugs/3112.zig");
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_ = @import("behavior/bugs/3367.zig");
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_ = @import("behavior/bugs/7250.zig");
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_ = @import("behavior/bugs/9584.zig");
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_ = @import("behavior/cast_llvm.zig");
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_ = @import("behavior/enum_llvm.zig");
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_ = @import("behavior/error_llvm.zig");
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_ = @import("behavior/eval.zig");
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_ = @import("behavior/floatop.zig");
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_ = @import("behavior/fn.zig");
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_ = @import("behavior/generics_llvm.zig");
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_ = @import("behavior/math.zig");
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_ = @import("behavior/maximum_minimum.zig");
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_ = @import("behavior/merge_error_sets.zig");
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_ = @import("behavior/namespace_depends_on_compile_var.zig");
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_ = @import("behavior/null_llvm.zig");
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_ = @import("behavior/optional_llvm.zig");
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_ = @import("behavior/popcount.zig");
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_ = @import("behavior/saturating_arithmetic.zig");
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_ = @import("behavior/sizeof_and_typeof.zig");
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_ = @import("behavior/slice.zig");
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_ = @import("behavior/struct_llvm.zig");
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_ = @import("behavior/switch.zig");
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_ = @import("behavior/union.zig");
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_ = @import("behavior/widening.zig");
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if (builtin.zig_backend != .stage2_wasm) {
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// Tests that pass for stage1, llvm backend, C backend
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_ = @import("behavior/cast_int.zig");
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_ = @import("behavior/int128.zig");
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_ = @import("behavior/translate_c_macros.zig");
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if (builtin.zig_backend != .stage1) {
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// When all comptime_memory.zig tests pass, #9646 can be closed.
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// _ = @import("behavior/comptime_memory.zig");
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_ = @import("behavior/slice_stage2.zig");
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} else {
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// Tests that only pass for the stage1 backend.
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_ = @import("behavior/align_stage1.zig");
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if (builtin.os.tag != .wasi) {
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_ = @import("behavior/asm.zig");
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_ = @import("behavior/async_fn.zig");
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if (builtin.zig_backend != .stage2_c) {
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// Tests that pass for stage1 and the llvm backend.
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_ = @import("behavior/align_llvm.zig");
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_ = @import("behavior/alignof.zig");
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_ = @import("behavior/array_llvm.zig");
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_ = @import("behavior/atomics.zig");
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_ = @import("behavior/basic_llvm.zig");
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_ = @import("behavior/bit_shifting.zig");
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_ = @import("behavior/bugs/394.zig");
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_ = @import("behavior/bugs/656.zig");
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_ = @import("behavior/bugs/1277.zig");
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_ = @import("behavior/bugs/1310.zig");
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_ = @import("behavior/bugs/1381.zig");
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_ = @import("behavior/bugs/1500.zig");
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_ = @import("behavior/bugs/1735.zig");
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_ = @import("behavior/bugs/1741.zig");
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_ = @import("behavior/bugs/2006.zig");
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_ = @import("behavior/bugs/2578.zig");
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_ = @import("behavior/bugs/3007.zig");
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_ = @import("behavior/bugs/3112.zig");
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_ = @import("behavior/bugs/3367.zig");
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_ = @import("behavior/bugs/7250.zig");
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_ = @import("behavior/bugs/9584.zig");
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_ = @import("behavior/cast_llvm.zig");
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_ = @import("behavior/enum_llvm.zig");
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_ = @import("behavior/error_llvm.zig");
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_ = @import("behavior/eval.zig");
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_ = @import("behavior/floatop.zig");
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_ = @import("behavior/fn.zig");
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_ = @import("behavior/generics_llvm.zig");
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_ = @import("behavior/math.zig");
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_ = @import("behavior/maximum_minimum.zig");
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_ = @import("behavior/merge_error_sets.zig");
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_ = @import("behavior/namespace_depends_on_compile_var.zig");
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_ = @import("behavior/null_llvm.zig");
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_ = @import("behavior/optional_llvm.zig");
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_ = @import("behavior/popcount.zig");
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_ = @import("behavior/saturating_arithmetic.zig");
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_ = @import("behavior/sizeof_and_typeof.zig");
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_ = @import("behavior/slice.zig");
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_ = @import("behavior/struct_llvm.zig");
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_ = @import("behavior/switch.zig");
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_ = @import("behavior/union.zig");
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_ = @import("behavior/widening.zig");
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if (builtin.zig_backend != .stage1) {
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// When all comptime_memory.zig tests pass, #9646 can be closed.
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// _ = @import("behavior/comptime_memory.zig");
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_ = @import("behavior/slice_stage2.zig");
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} else {
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// Tests that only pass for the stage1 backend.
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_ = @import("behavior/align_stage1.zig");
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if (builtin.os.tag != .wasi) {
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_ = @import("behavior/asm.zig");
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_ = @import("behavior/async_fn.zig");
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}
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_ = @import("behavior/await_struct.zig");
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_ = @import("behavior/bitcast_stage1.zig");
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_ = @import("behavior/bitreverse.zig");
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_ = @import("behavior/bugs/421.zig");
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_ = @import("behavior/bugs/529.zig");
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_ = @import("behavior/bugs/718.zig");
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_ = @import("behavior/bugs/726.zig");
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_ = @import("behavior/bugs/828.zig");
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_ = @import("behavior/bugs/920.zig");
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_ = @import("behavior/bugs/1025.zig");
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_ = @import("behavior/bugs/1076.zig");
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_ = @import("behavior/bugs/1120.zig");
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_ = @import("behavior/bugs/1421.zig");
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_ = @import("behavior/bugs/1442.zig");
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_ = @import("behavior/bugs/1607.zig");
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_ = @import("behavior/bugs/1851.zig");
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_ = @import("behavior/bugs/1914.zig");
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_ = @import("behavior/bugs/2114.zig");
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_ = @import("behavior/bugs/3384.zig");
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_ = @import("behavior/bugs/3742.zig");
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_ = @import("behavior/bugs/3779.zig");
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_ = @import("behavior/bugs/4328.zig");
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_ = @import("behavior/bugs/5398.zig");
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_ = @import("behavior/bugs/5413.zig");
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_ = @import("behavior/bugs/5474.zig");
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_ = @import("behavior/bugs/5487.zig");
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_ = @import("behavior/bugs/6456.zig");
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_ = @import("behavior/bugs/6781.zig");
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_ = @import("behavior/bugs/7003.zig");
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_ = @import("behavior/bugs/7027.zig");
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_ = @import("behavior/bugs/7047.zig");
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_ = @import("behavior/bugs/10147.zig");
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_ = @import("behavior/byteswap.zig");
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_ = @import("behavior/call_stage1.zig");
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_ = @import("behavior/cast_stage1.zig");
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_ = @import("behavior/const_slice_child.zig");
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_ = @import("behavior/defer_stage1.zig");
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_ = @import("behavior/enum_stage1.zig");
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_ = @import("behavior/error_stage1.zig");
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_ = @import("behavior/eval_stage1.zig");
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_ = @import("behavior/field_parent_ptr.zig");
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_ = @import("behavior/floatop_stage1.zig");
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_ = @import("behavior/fn_stage1.zig");
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_ = @import("behavior/fn_delegation.zig");
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_ = @import("behavior/for_stage1.zig");
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_ = @import("behavior/if_stage1.zig");
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_ = @import("behavior/ir_block_deps.zig");
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_ = @import("behavior/math_stage1.zig");
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_ = @import("behavior/misc.zig");
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_ = @import("behavior/muladd.zig");
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_ = @import("behavior/null_stage1.zig");
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_ = @import("behavior/optional_stage1.zig");
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_ = @import("behavior/pointers_stage1.zig");
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_ = @import("behavior/popcount_stage1.zig");
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_ = @import("behavior/ptrcast_stage1.zig");
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_ = @import("behavior/reflection.zig");
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_ = @import("behavior/saturating_arithmetic_stage1.zig");
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_ = @import("behavior/select.zig");
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_ = @import("behavior/shuffle.zig");
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_ = @import("behavior/sizeof_and_typeof_stage1.zig");
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_ = @import("behavior/slice_stage1.zig");
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_ = @import("behavior/struct_contains_null_ptr_itself.zig");
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_ = @import("behavior/struct_contains_slice_of_itself.zig");
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_ = @import("behavior/struct_stage1.zig");
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_ = @import("behavior/switch_prong_err_enum.zig");
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_ = @import("behavior/switch_prong_implicit_cast.zig");
|
||||
_ = @import("behavior/switch_stage1.zig");
|
||||
_ = @import("behavior/truncate_stage1.zig");
|
||||
_ = @import("behavior/tuple.zig");
|
||||
_ = @import("behavior/type_stage1.zig");
|
||||
_ = @import("behavior/type_info_stage1.zig");
|
||||
_ = @import("behavior/typename.zig");
|
||||
_ = @import("behavior/union_stage1.zig");
|
||||
_ = @import("behavior/union_with_members.zig");
|
||||
_ = @import("behavior/var_args.zig");
|
||||
_ = @import("behavior/vector.zig");
|
||||
if (builtin.target.cpu.arch == .wasm32) {
|
||||
_ = @import("behavior/wasm.zig");
|
||||
}
|
||||
_ = @import("behavior/while_stage1.zig");
|
||||
_ = @import("behavior/translate_c_macros_stage1.zig");
|
||||
}
|
||||
_ = @import("behavior/await_struct.zig");
|
||||
_ = @import("behavior/bitcast_stage1.zig");
|
||||
_ = @import("behavior/bitreverse.zig");
|
||||
_ = @import("behavior/bugs/421.zig");
|
||||
_ = @import("behavior/bugs/529.zig");
|
||||
_ = @import("behavior/bugs/718.zig");
|
||||
_ = @import("behavior/bugs/726.zig");
|
||||
_ = @import("behavior/bugs/828.zig");
|
||||
_ = @import("behavior/bugs/920.zig");
|
||||
_ = @import("behavior/bugs/1025.zig");
|
||||
_ = @import("behavior/bugs/1076.zig");
|
||||
_ = @import("behavior/bugs/1120.zig");
|
||||
_ = @import("behavior/bugs/1421.zig");
|
||||
_ = @import("behavior/bugs/1442.zig");
|
||||
_ = @import("behavior/bugs/1607.zig");
|
||||
_ = @import("behavior/bugs/1851.zig");
|
||||
_ = @import("behavior/bugs/1914.zig");
|
||||
_ = @import("behavior/bugs/2114.zig");
|
||||
_ = @import("behavior/bugs/3384.zig");
|
||||
_ = @import("behavior/bugs/3742.zig");
|
||||
_ = @import("behavior/bugs/3779.zig");
|
||||
_ = @import("behavior/bugs/4328.zig");
|
||||
_ = @import("behavior/bugs/5398.zig");
|
||||
_ = @import("behavior/bugs/5413.zig");
|
||||
_ = @import("behavior/bugs/5474.zig");
|
||||
_ = @import("behavior/bugs/5487.zig");
|
||||
_ = @import("behavior/bugs/6456.zig");
|
||||
_ = @import("behavior/bugs/6781.zig");
|
||||
_ = @import("behavior/bugs/7003.zig");
|
||||
_ = @import("behavior/bugs/7027.zig");
|
||||
_ = @import("behavior/bugs/7047.zig");
|
||||
_ = @import("behavior/bugs/10147.zig");
|
||||
_ = @import("behavior/byteswap.zig");
|
||||
_ = @import("behavior/call_stage1.zig");
|
||||
_ = @import("behavior/cast_stage1.zig");
|
||||
_ = @import("behavior/const_slice_child.zig");
|
||||
_ = @import("behavior/defer_stage1.zig");
|
||||
_ = @import("behavior/enum_stage1.zig");
|
||||
_ = @import("behavior/error_stage1.zig");
|
||||
_ = @import("behavior/eval_stage1.zig");
|
||||
_ = @import("behavior/field_parent_ptr.zig");
|
||||
_ = @import("behavior/floatop_stage1.zig");
|
||||
_ = @import("behavior/fn_stage1.zig");
|
||||
_ = @import("behavior/fn_delegation.zig");
|
||||
_ = @import("behavior/for_stage1.zig");
|
||||
_ = @import("behavior/if_stage1.zig");
|
||||
_ = @import("behavior/ir_block_deps.zig");
|
||||
_ = @import("behavior/math_stage1.zig");
|
||||
_ = @import("behavior/misc.zig");
|
||||
_ = @import("behavior/muladd.zig");
|
||||
_ = @import("behavior/null_stage1.zig");
|
||||
_ = @import("behavior/optional_stage1.zig");
|
||||
_ = @import("behavior/pointers_stage1.zig");
|
||||
_ = @import("behavior/popcount_stage1.zig");
|
||||
_ = @import("behavior/ptrcast_stage1.zig");
|
||||
_ = @import("behavior/reflection.zig");
|
||||
_ = @import("behavior/saturating_arithmetic_stage1.zig");
|
||||
_ = @import("behavior/select.zig");
|
||||
_ = @import("behavior/shuffle.zig");
|
||||
_ = @import("behavior/sizeof_and_typeof_stage1.zig");
|
||||
_ = @import("behavior/slice_stage1.zig");
|
||||
_ = @import("behavior/struct_contains_null_ptr_itself.zig");
|
||||
_ = @import("behavior/struct_contains_slice_of_itself.zig");
|
||||
_ = @import("behavior/struct_stage1.zig");
|
||||
_ = @import("behavior/switch_prong_err_enum.zig");
|
||||
_ = @import("behavior/switch_prong_implicit_cast.zig");
|
||||
_ = @import("behavior/switch_stage1.zig");
|
||||
_ = @import("behavior/truncate_stage1.zig");
|
||||
_ = @import("behavior/tuple.zig");
|
||||
_ = @import("behavior/type_stage1.zig");
|
||||
_ = @import("behavior/type_info_stage1.zig");
|
||||
_ = @import("behavior/typename.zig");
|
||||
_ = @import("behavior/union_stage1.zig");
|
||||
_ = @import("behavior/union_with_members.zig");
|
||||
_ = @import("behavior/var_args.zig");
|
||||
_ = @import("behavior/vector.zig");
|
||||
if (builtin.target.cpu.arch == .wasm32) {
|
||||
_ = @import("behavior/wasm.zig");
|
||||
}
|
||||
_ = @import("behavior/while_stage1.zig");
|
||||
_ = @import("behavior/translate_c_macros_stage1.zig");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -3,36 +3,6 @@ const expect = std.testing.expect;
|
||||
const builtin = @import("builtin");
|
||||
const native_arch = builtin.target.cpu.arch;
|
||||
|
||||
var foo: u8 align(4) = 100;
|
||||
|
||||
test "global variable alignment" {
|
||||
comptime try expect(@typeInfo(@TypeOf(&foo)).Pointer.alignment == 4);
|
||||
comptime try expect(@TypeOf(&foo) == *align(4) u8);
|
||||
{
|
||||
const slice = @as(*[1]u8, &foo)[0..];
|
||||
comptime try expect(@TypeOf(slice) == *align(4) [1]u8);
|
||||
}
|
||||
{
|
||||
var runtime_zero: usize = 0;
|
||||
const slice = @as(*[1]u8, &foo)[runtime_zero..];
|
||||
comptime try expect(@TypeOf(slice) == []align(4) u8);
|
||||
}
|
||||
}
|
||||
|
||||
test "default alignment allows unspecified in type syntax" {
|
||||
try expect(*u32 == *align(@alignOf(u32)) u32);
|
||||
}
|
||||
|
||||
test "implicitly decreasing pointer alignment" {
|
||||
const a: u32 align(4) = 3;
|
||||
const b: u32 align(8) = 4;
|
||||
try expect(addUnaligned(&a, &b) == 7);
|
||||
}
|
||||
|
||||
fn addUnaligned(a: *align(1) const u32, b: *align(1) const u32) u32 {
|
||||
return a.* + b.*;
|
||||
}
|
||||
|
||||
test "implicitly decreasing slice alignment" {
|
||||
const a: u32 align(4) = 3;
|
||||
const b: u32 align(8) = 4;
|
||||
@ -42,18 +12,6 @@ fn addUnalignedSlice(a: []align(1) const u32, b: []align(1) const u32) u32 {
|
||||
return a[0] + b[0];
|
||||
}
|
||||
|
||||
test "@alignCast pointers" {
|
||||
var x: u32 align(4) = 1;
|
||||
expectsOnly1(&x);
|
||||
try expect(x == 2);
|
||||
}
|
||||
fn expectsOnly1(x: *align(1) u32) void {
|
||||
expects4(@alignCast(4, x));
|
||||
}
|
||||
fn expects4(x: *align(4) u32) void {
|
||||
x.* += 1;
|
||||
}
|
||||
|
||||
test "specifying alignment allows pointer cast" {
|
||||
try testBytesAlign(0x33);
|
||||
}
|
||||
@ -76,62 +34,9 @@ fn sliceExpects4(slice: []align(4) u32) void {
|
||||
slice[0] += 1;
|
||||
}
|
||||
|
||||
test "alignment of structs" {
|
||||
try expect(@alignOf(struct {
|
||||
a: i32,
|
||||
b: *i32,
|
||||
}) == @alignOf(usize));
|
||||
}
|
||||
|
||||
test "return error union with 128-bit integer" {
|
||||
try expect(3 == try give());
|
||||
}
|
||||
fn give() anyerror!u128 {
|
||||
return 3;
|
||||
}
|
||||
|
||||
test "alignment of >= 128-bit integer type" {
|
||||
try expect(@alignOf(u128) == 16);
|
||||
try expect(@alignOf(u129) == 16);
|
||||
}
|
||||
|
||||
test "alignment of struct with 128-bit field" {
|
||||
try expect(@alignOf(struct {
|
||||
x: u128,
|
||||
}) == 16);
|
||||
|
||||
comptime {
|
||||
try expect(@alignOf(struct {
|
||||
x: u128,
|
||||
}) == 16);
|
||||
}
|
||||
}
|
||||
|
||||
test "size of extern struct with 128-bit field" {
|
||||
try expect(@sizeOf(extern struct {
|
||||
x: u128,
|
||||
y: u8,
|
||||
}) == 32);
|
||||
|
||||
comptime {
|
||||
try expect(@sizeOf(extern struct {
|
||||
x: u128,
|
||||
y: u8,
|
||||
}) == 32);
|
||||
}
|
||||
}
|
||||
|
||||
test "@ptrCast preserves alignment of bigger source" {
|
||||
var x: u32 align(16) = 1234;
|
||||
const ptr = @ptrCast(*u8, &x);
|
||||
try expect(@TypeOf(ptr) == *align(16) u8);
|
||||
}
|
||||
|
||||
test "alignstack" {
|
||||
try expect(fnWithAlignedStack() == 1234);
|
||||
}
|
||||
|
||||
fn fnWithAlignedStack() i32 {
|
||||
@setAlignStack(256);
|
||||
return 1234;
|
||||
}
|
||||
|
||||
99
test/behavior/align_simple.zig
Normal file
99
test/behavior/align_simple.zig
Normal file
@ -0,0 +1,99 @@
|
||||
const std = @import("std");
|
||||
const expect = std.testing.expect;
|
||||
const builtin = @import("builtin");
|
||||
const native_arch = builtin.target.cpu.arch;
|
||||
|
||||
var foo: u8 align(4) = 100;
|
||||
|
||||
test "global variable alignment" {
|
||||
comptime try expect(@typeInfo(@TypeOf(&foo)).Pointer.alignment == 4);
|
||||
comptime try expect(@TypeOf(&foo) == *align(4) u8);
|
||||
{
|
||||
const slice = @as(*[1]u8, &foo)[0..];
|
||||
comptime try expect(@TypeOf(slice) == *align(4) [1]u8);
|
||||
}
|
||||
{
|
||||
var runtime_zero: usize = 0;
|
||||
const slice = @as(*[1]u8, &foo)[runtime_zero..];
|
||||
comptime try expect(@TypeOf(slice) == []align(4) u8);
|
||||
}
|
||||
}
|
||||
|
||||
test "default alignment allows unspecified in type syntax" {
|
||||
try expect(*u32 == *align(@alignOf(u32)) u32);
|
||||
}
|
||||
|
||||
test "implicitly decreasing pointer alignment" {
|
||||
const a: u32 align(4) = 3;
|
||||
const b: u32 align(8) = 4;
|
||||
try expect(addUnaligned(&a, &b) == 7);
|
||||
}
|
||||
|
||||
fn addUnaligned(a: *align(1) const u32, b: *align(1) const u32) u32 {
|
||||
return a.* + b.*;
|
||||
}
|
||||
|
||||
test "@alignCast pointers" {
|
||||
var x: u32 align(4) = 1;
|
||||
expectsOnly1(&x);
|
||||
try expect(x == 2);
|
||||
}
|
||||
fn expectsOnly1(x: *align(1) u32) void {
|
||||
expects4(@alignCast(4, x));
|
||||
}
|
||||
fn expects4(x: *align(4) u32) void {
|
||||
x.* += 1;
|
||||
}
|
||||
|
||||
test "alignment of structs" {
|
||||
try expect(@alignOf(struct {
|
||||
a: i32,
|
||||
b: *i32,
|
||||
}) == @alignOf(usize));
|
||||
}
|
||||
|
||||
test "alignment of >= 128-bit integer type" {
|
||||
try expect(@alignOf(u128) == 16);
|
||||
try expect(@alignOf(u129) == 16);
|
||||
}
|
||||
|
||||
test "alignment of struct with 128-bit field" {
|
||||
try expect(@alignOf(struct {
|
||||
x: u128,
|
||||
}) == 16);
|
||||
|
||||
comptime {
|
||||
try expect(@alignOf(struct {
|
||||
x: u128,
|
||||
}) == 16);
|
||||
}
|
||||
}
|
||||
|
||||
test "size of extern struct with 128-bit field" {
|
||||
try expect(@sizeOf(extern struct {
|
||||
x: u128,
|
||||
y: u8,
|
||||
}) == 32);
|
||||
|
||||
comptime {
|
||||
try expect(@sizeOf(extern struct {
|
||||
x: u128,
|
||||
y: u8,
|
||||
}) == 32);
|
||||
}
|
||||
}
|
||||
|
||||
test "@ptrCast preserves alignment of bigger source" {
|
||||
var x: u32 align(16) = 1234;
|
||||
const ptr = @ptrCast(*u8, &x);
|
||||
try expect(@TypeOf(ptr) == *align(16) u8);
|
||||
}
|
||||
|
||||
test "alignstack" {
|
||||
try expect(fnWithAlignedStack() == 1234);
|
||||
}
|
||||
|
||||
fn fnWithAlignedStack() i32 {
|
||||
@setAlignStack(256);
|
||||
return 1234;
|
||||
}
|
||||
15
test/behavior/array_simple.zig
Normal file
15
test/behavior/array_simple.zig
Normal file
@ -0,0 +1,15 @@
|
||||
const std = @import("std");
|
||||
const testing = std.testing;
|
||||
const expect = testing.expect;
|
||||
|
||||
test "array to slice" {
|
||||
const a: u32 align(4) = 3;
|
||||
const b: u32 align(8) = 4;
|
||||
const a_slice: []align(1) const u32 = @as(*const [1]u32, &a)[0..];
|
||||
const b_slice: []align(1) const u32 = @as(*const [1]u32, &b)[0..];
|
||||
try expect(a_slice[0] + b_slice[0] == 7);
|
||||
|
||||
const d: []const u32 = &[2]u32{ 1, 2 };
|
||||
const e: []const u32 = &[3]u32{ 3, 4, 5 };
|
||||
try expect(d[0] + e[0] + d[1] + e[1] == 10);
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user