regex ir opt is done, thinking about source gen

StgSharp.RegularAnalysis/Text/RegexAnalyzer.IROptimize.cs

@@ -92,7 +92,13 @@ namespace StgSharp.RegularAnalysis.Text
                         process_count += result;
                     }
                     opt_count++;
-                } else if (opt_win_sp[0] is RegexTryIR{ IsFullyOptimized:false} try_ir)
+                } else if (opt_win_sp[0] is IRegexComplex { IsFullyOptimized: true } skip)
+                {
+                    int count = skip.CommandCount;
+                    process_count += count + 1;
+                    Span<RegexIR> opt_block = origin_span.Slice(index, count + 1);
+                    opt_ir.AddRange(opt_block);
+                } else if (opt_win_sp[0] is RegexTryIR { IsFullyOptimized: false } try_ir)
                 {
                     process_count++;
                     int cmd_cnt = try_ir.CommandCount;
@@ -125,6 +131,35 @@ namespace StgSharp.RegularAnalysis.Text
                 opt_ir.Clear();
                 goto opt_cycle;
             }
+            /**/
+            (origin_ir, opt_ir) = (opt_ir, origin_ir);
+            opt_ir.Clear();
+            index = 0;
+            origin_span = CollectionsMarshal.AsSpan(origin_ir);
+            do
+            {
+                int process_count = 0;
+                int last = int.Min(origin_span.Length, index + 8);
+                origin_span[index..last].CopyTo(opt_win_sp);
+
+                if (opt_win_sp[0] is IRegexComplex { IsFullyOptimized: true } skip)
+                {
+                    int count = skip.CommandCount;
+                    process_count += count + 1;
+                    Span<RegexIR> opt_block = origin_span.Slice(index, count + 1);
+                    opt_ir.AddRange(opt_block);
+                } else if (TryReplaceDotStar(opt_win_sp, opt_ir) >= 0)
+                {
+                    process_count++;
+                } else
+                {
+                    opt_ir.Add(opt_win_sp[0]);
+                    process_count++;
+                }
+
+                index += process_count;
+            } while (index < origin_ir.Count);
+            /**/
             optIR = opt_ir;
         }
 
@@ -144,7 +179,7 @@ namespace StgSharp.RegularAnalysis.Text
                            List<RegexIR> opt
         )
         {
-            const int falttern_size = 32;
+            const int flatten_size = 32;
             RegexIR ir = window[0];
             if (ir is not RegexCountSeqIR seq) {
                 return -1;
@@ -156,10 +191,10 @@ namespace StgSharp.RegularAnalysis.Text
             }
             string pattern = seq.Sequence;
             int pattern_size = pattern.Length;
-            if (pattern_size > falttern_size) {
+            if (pattern_size > flatten_size) {
                 opt.Add(ir);
             }
-            int min_expand = falttern_size / pattern_size;
+            int min_expand = flatten_size / pattern_size;
             min_expand = int.Min(min_expand, min);
             string expand = string.Concat(Enumerable.Repeat(pattern, min_expand));
             int new_min = min / min_expand;
@@ -210,6 +245,33 @@ namespace StgSharp.RegularAnalysis.Text
 
             #endregion
 
+        private static int TryReplaceDotStar(
+                           Span<RegexIR> window,
+                           List<RegexIR> opt
+        )
+        {
+            if (window[0] is not RegexCountSetIR { IsDotStar: true } dot) {
+                return -1;
+            }
+            if (dot.IsGreedy)
+            {
+                RegexFindComplexIR find = new(false, -1)
+                {
+                    IsFullyOptimized = true
+                };
+                opt.Add(find);
+                return 0;
+            } else
+            {
+                RegexFindComplexIR find = new(true, -1)
+                {
+                    IsFullyOptimized = true
+                };
+                opt.Add(find);
+                return 0;
+            }
+        }
+
         internal class RegexInfo
         {
 
@@ -323,7 +385,7 @@ namespace StgSharp.RegularAnalysis.Text
         ///
         /// </param>
         /// <returns>
-        ///   Negative if cannot opt, 0 if match sucessfully, positive if meets an IRgexComplex
+        ///   Negative if cannot opt, 0 if match successfully, positive if meets an IRegexComplex
         ///   interface, need to call TryExpandComplexPlus
         /// </returns>
         private static int TryExpandPlus(