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stage2: sparc64: Implement airStructFieldPtrIndex

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This commit is contained in:
Koakuma
2022-05-15 10:20:35 +07:00
parent 26116211ec
commit 77eef33c04
1 changed files with 46 additions and 4 deletions
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50
src/arch/sparc64/CodeGen.zig
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@@ -623,10 +623,10 @@ fn genBody(self: *Self, body: []const Air.Inst.Index) InnerError!void {
.atomic_store_release => @panic("TODO try self.airAtomicStore(inst, .Release)"),
.atomic_store_seq_cst => @panic("TODO try self.airAtomicStore(inst, .SeqCst)"),
.struct_field_ptr_index_0 => @panic("TODO try self.airStructFieldPtrIndex(inst, 0)"),
.struct_field_ptr_index_1 => @panic("TODO try self.airStructFieldPtrIndex(inst, 1)"),
.struct_field_ptr_index_2 => @panic("TODO try self.airStructFieldPtrIndex(inst, 2)"),
.struct_field_ptr_index_3 => @panic("TODO try self.airStructFieldPtrIndex(inst, 3)"),
.struct_field_ptr_index_0 => try self.airStructFieldPtrIndex(inst, 0),
.struct_field_ptr_index_1 => try self.airStructFieldPtrIndex(inst, 1),
.struct_field_ptr_index_2 => try self.airStructFieldPtrIndex(inst, 2),
.struct_field_ptr_index_3 => try self.airStructFieldPtrIndex(inst, 3),
.field_parent_ptr => @panic("TODO try self.airFieldParentPtr(inst)"),
@@ -1452,6 +1452,12 @@ fn airStore(self: *Self, inst: Air.Inst.Index) !void {
return self.finishAir(inst, .dead, .{ bin_op.lhs, bin_op.rhs, .none });
}
fn airStructFieldPtrIndex(self: *Self, inst: Air.Inst.Index, index: u8) !void {
const ty_op = self.air.instructions.items(.data)[inst].ty_op;
const result = try self.structFieldPtr(inst, ty_op.operand, index);
return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
}
fn airSwitch(self: *Self, inst: Air.Inst.Index) !void {
_ = self;
_ = inst;
@@ -2987,6 +2993,42 @@ fn store(self: *Self, ptr: MCValue, value: MCValue, ptr_ty: Type, value_ty: Type
}
}
fn structFieldPtr(self: *Self, inst: Air.Inst.Index, operand: Air.Inst.Ref, index: u32) !MCValue {
return if (self.liveness.isUnused(inst)) .dead else result: {
const mcv = try self.resolveInst(operand);
const ptr_ty = self.air.typeOf(operand);
const struct_ty = ptr_ty.childType();
const struct_field_offset = @intCast(u32, struct_ty.structFieldOffset(index, self.target.*));
switch (mcv) {
.ptr_stack_offset => |off| {
break :result MCValue{ .ptr_stack_offset = off - struct_field_offset };
},
else => {
const offset_reg = try self.copyToTmpRegister(ptr_ty, .{
.immediate = struct_field_offset,
});
const offset_reg_lock = self.register_manager.lockRegAssumeUnused(offset_reg);
defer self.register_manager.unlockReg(offset_reg_lock);
const addr_reg = try self.copyToTmpRegister(ptr_ty, mcv);
const addr_reg_lock = self.register_manager.lockRegAssumeUnused(addr_reg);
defer self.register_manager.unlockReg(addr_reg_lock);
const dest = try self.binOp(
.add,
null,
.{ .register = addr_reg },
.{ .register = offset_reg },
Type.usize,
Type.usize,
);
break :result dest;
},
}
};
}
fn truncRegister(
self: *Self,
operand_reg: Register,