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Are throw helpers really more efficient?
Type of issue
Typo
Description
From https://learn.microsoft.com/en-us/dotnet/core/whats-new/dotnet-8/sdk#code-analysis
Throw helpers are simpler and more efficient than an if block constructing a new exception instance.
Having look at https://github.com/dotnet/runtime/blob/5535e31a712343a63f5d7d796cd874e563e5ac14/src/libraries/System.Private.CoreLib/src/System/ArgumentNullException.cs, I see that in order to throw 2 methods are called and no optimization which could be more efficient than simple if-then construct.
Page URL
https://learn.microsoft.com/en-us/dotnet/core/whats-new/dotnet-8/sdk
Content source URL
https://github.com/dotnet/docs/blob/main/docs/core/whats-new/dotnet-8/sdk.md
Document Version Independent Id
2dd1bc19-cfa0-3d7d-4931-1f0f4fefac12
Article author
@gewarren
Metadata
- ID: 0b25da3d-7bbf-d16d-3caf-e56923fe9716
- Service: dotnet-fundamentals
I see that in order to throw 2 methods are called
At runtime the JIT will inline the method.
On the other side the JIT sees that the Throw-method does not return, so it won't inline that method too
Further on the plus-side is the use of CallerArgumentExpression which can be coded in other ways to achieve the same effect.
Aha, I did not see inlining annotations. I believe what you say. Nonetheless in the end it is not more effecient, right?