Perf demo

nemesissoft · Sep 23, 2024 · c0c0395 · c0c0395
1 parent b7772ce
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diff --git a/Benchmarks/BestPractices/CodeGen.cs b/Benchmarks/BestPractices/CodeGen.cs
diff --git a/Benchmarks/BestPractices/Demo.md b/Benchmarks/BestPractices/Demo.md
@@ -35,10 +35,63 @@ BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args, config);
 1. [BenchmarkInput.cs](https://github.com/nemesissoft/Nemesis.TextParsers/blob/ef14ecc52ac0275324b70e8e89a32192d6d734a7/Benchmarks/Helpers/BenchmarkInput.cs#L5)
 
 # Samples 
-- 
-- 
+- [StringConcat](https://github.com/nemesissoft/Nemesis.TextParsers/blob/b7772ce4fe66381d301ad46213f67c077d35ae89/Benchmarks/StringConcatBench.cs#L53)
+- [Generator](https://github.com/nemesissoft/Nemesis.TextParsers/blob/b7772ce4fe66381d301ad46213f67c077d35ae89/Benchmarks/BestPractices/GeneratorBench.cs#L16)
+- [Nullable](https://github.com/nemesissoft/Nemesis.TextParsers/blob/b7772ce4fe66381d301ad46213f67c077d35ae89/Benchmarks/BestPractices/Nullable.cs#L12)
+- [Boxing](https://github.com/nemesissoft/Nemesis.TextParsers/blob/b7772ce4fe66381d301ad46213f67c077d35ae89/Benchmarks/BestPractices/Boxing.cs#L12)
+- [BoxingUnsafe](https://github.com/nemesissoft/Nemesis.TextParsers/blob/b7772ce4fe66381d301ad46213f67c077d35ae89/Benchmarks/BestPractices/BoxingUnsafe.cs#L12)
+- [BoundsCheck](https://github.com/nemesissoft/Nemesis.TextParsers/blob/b7772ce4fe66381d301ad46213f67c077d35ae89/Benchmarks/BestPractices/BoundsCheck.cs#L20)
+- [EnumParser](https://github.com/nemesissoft/Nemesis.TextParsers/blob/b7772ce4fe66381d301ad46213f67c077d35ae89/Benchmarks/EnumBenchmarks/EnumParserBench_CodeGen.cs#L30)
+- [Linq](https://github.com/nemesissoft/Nemesis.TextParsers/blob/main/Benchmarks/LinqBench/Linq_WhereAndFirst_Vs_First.cs)
+- [MultiKeyDictionary](https://github.com/nemesissoft/Nemesis.TextParsers/blob/b7772ce4fe66381d301ad46213f67c077d35ae89/Benchmarks/Collections/MultiKeyDictionaryBench.cs#L15)
 - [Kafka deser](https://michalbrylka.github.io/posts/kafka-protobuf-deserializer/)
 
+# CodeGen
+[Compiler explorer](https://godbolt.org/)
+```csharp
+internal class CodeGen
+{
+    static bool IsEven(int i) => (i % 2) == 0;
+}  
+```
+
+```assembly
+; mono:
+; Program:IsEven(System.Int32):System.Boolean:
+       sub      rsp, 8
+       mov      [rsp], r15
+       mov      r15, rdi
+       mov      rcx, r15
+       shr      ecx, 1Fh
+       mov      rax, r15
+       add      eax, ecx
+       and      rax, 1
+       sub      eax, ecx
+       test     eax, eax
+       sete     al
+       movzx    rax, al
+       mov      r15, [rsp]
+       add      rsp, 8
+       ret
+
+; 6.0
+; Program:IsEven(int):bool:
+       test     dil, 1
+       sete     al
+       movzx    rax, al
+       ret  
+
+; 8.0
+; Program:IsEven(int):bool (FullOpts):
+G_M20272_IG01:  ;; offset=0x0000
+G_M20272_IG02:  ;; offset=0x0000
+       mov      eax, edi
+       not      eax
+       and      eax, 1
+G_M20272_IG03:  ;; offset=0x0007
+       ret  
+```
+
 
 # Best practices
 1. Lower error == better predictability

diff --git a/Benchmarks/BestPractices/EnumParserBench_CodeGen.cs b/Benchmarks/BestPractices/EnumParserBench_CodeGen.cs
diff --git a/Benchmarks/BestPractices/LinqAllBench.cs b/Benchmarks/BestPractices/LinqAllBench.cs
diff --git a/Benchmarks/BestPractices/MultiKeyDictionaryBench.cs b/Benchmarks/BestPractices/MultiKeyDictionaryBench.cs
diff --git a/Benchmarks/BestPractices/StringConcatBench.cs b/Benchmarks/BestPractices/StringConcatBench.cs