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stage2: implement slice_ptr

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This commit is contained in:
Jakub Konka 2022-01-04 18:24:01 +01:00
parent 2b77775cbb
commit f01e6eec56
1 changed files with 19 additions and 7 deletions
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26
src/arch/x86_64/CodeGen.zig
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@ -1255,10 +1255,18 @@ fn airWrapErrUnionErr(self: *Self, inst: Air.Inst.Index) !void {
fn airSlicePtr(self: *Self, inst: Air.Inst.Index) !void {
const ty_op = self.air.instructions.items(.data)[inst].ty_op;
const result: MCValue = if (self.liveness.isUnused(inst))
.dead
else
return self.fail("TODO implement slice_ptr for {}", .{self.target.cpu.arch});
const result: MCValue = if (self.liveness.isUnused(inst)) .dead else result: {
const operand = try self.resolveInst(ty_op.operand);
const dst_mcv: MCValue = blk: {
switch (operand) {
.stack_offset => |off| {
break :blk MCValue{ .stack_offset = off };
},
else => return self.fail("TODO implement slice_ptr for {}", .{operand}),
}
};
break :result dst_mcv;
};
return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
}
@ -1266,9 +1274,13 @@ fn airSliceLen(self: *Self, inst: Air.Inst.Index) !void {
const ty_op = self.air.instructions.items(.data)[inst].ty_op;
const result: MCValue = if (self.liveness.isUnused(inst)) .dead else result: {
const operand = try self.resolveInst(ty_op.operand);
const dst_mcv: MCValue = switch (operand) {
.stack_offset => |off| MCValue{ .stack_offset = off + 8 },
else => return self.fail("TODO implement slice_len for {}", .{operand}),
const dst_mcv: MCValue = blk: {
switch (operand) {
.stack_offset => |off| {
break :blk MCValue{ .stack_offset = off + 8 };
},
else => return self.fail("TODO implement slice_len for {}", .{operand}),
}
};
break :result dst_mcv;
};