Commit b4b7a404cf

@@ -611,7 +611,7 @@ fn genBody(self: *Self, body: []const Air.Inst.Index) InnerError!void {
             .ctz             => try self.airCtz(inst),
             .popcount        => try self.airPopcount(inst),
             .byte_swap       => @panic("TODO try self.airByteSwap(inst)"),
-            .bit_reverse     => @panic("TODO try self.airBitReverse(inst)"),
+            .bit_reverse     => try self.airBitReverse(inst),
             .tag_name        => try self.airTagName(inst),
             .error_name      => try self.airErrorName(inst),
             .splat           => try self.airSplat(inst),
@@ -1090,6 +1090,12 @@ fn airBitCast(self: *Self, inst: Air.Inst.Index) !void {
     return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
 }
 
+fn airBitReverse(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 airBitReverse for {}", .{self.target.cpu.arch});
+    return self.finishAir(inst, result, .{ ty_op.operand, .none, .none });
+}
+
 fn airBlock(self: *Self, inst: Air.Inst.Index) !void {
     try self.blocks.putNoClobber(self.gpa, inst, .{
         // A block is a setup to be able to jump to the end.