[wasm] Reduce amount of exception filtering in code reached from Blazor template

[radekdoulik]

Exception filtering on wasm is slow, because we cannot unwind stack and thus need to switch from AOT to interpreter for parts of the code.

Try to reduce amount of exception filtering in parts of our libraries, which are used in Blazor template. In the linked assemblies we have currently 9 filter blocks:

Microsoft.Extensions.DependencyInjection.dll.dis.txt:      IL_0033:  endfilter
System.Net.Http.dll.dis.txt:      IL_0058:  endfilter
System.Private.CoreLib.dll.dis.txt:      IL_0048:  endfilter
System.Private.CoreLib.dll.dis.txt:      IL_0079:  endfilter
System.Private.CoreLib.dll.dis.txt:        IL_00e1:  endfilter
System.Private.CoreLib.dll.dis.txt:        IL_0042:  endfilter
System.Text.Json.dll.dis.txt:      IL_0148:  endfilter
System.Text.Json.dll.dis.txt:      IL_0183:  endfilter
System.Text.Json.dll.dis.txt:      IL_002e:  endfilter

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Issue Details

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Exception filtering on wasm is slow, because we cannot unwind stack and thus need to switch from AOT to interpreter for parts of the code.

Try to reduce amount of exception filtering in parts of our libraries, which are used in Blazor template. In the linked assemblies we have currently 9 filter blocks:

Microsoft.Extensions.DependencyInjection.dll.dis.txt:      IL_0033:  endfilter
System.Net.Http.dll.dis.txt:      IL_0058:  endfilter
System.Private.CoreLib.dll.dis.txt:      IL_0048:  endfilter
System.Private.CoreLib.dll.dis.txt:      IL_0079:  endfilter
System.Private.CoreLib.dll.dis.txt:        IL_00e1:  endfilter
System.Private.CoreLib.dll.dis.txt:        IL_0042:  endfilter
System.Text.Json.dll.dis.txt:      IL_0148:  endfilter
System.Text.Json.dll.dis.txt:      IL_0183:  endfilter
System.Text.Json.dll.dis.txt:      IL_002e:  endfilter

Author:	radekdoulik
Assignees:	radekdoulik
Labels:	arch-wasm
Milestone:	Future

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Issue Details

---

Exception filtering on wasm is slow, because we cannot unwind stack and thus need to switch from AOT to interpreter for parts of the code.

Try to reduce amount of exception filtering in parts of our libraries, which are used in Blazor template. In the linked assemblies we have currently 9 filter blocks:

Microsoft.Extensions.DependencyInjection.dll.dis.txt:      IL_0033:  endfilter
System.Net.Http.dll.dis.txt:      IL_0058:  endfilter
System.Private.CoreLib.dll.dis.txt:      IL_0048:  endfilter
System.Private.CoreLib.dll.dis.txt:      IL_0079:  endfilter
System.Private.CoreLib.dll.dis.txt:        IL_00e1:  endfilter
System.Private.CoreLib.dll.dis.txt:        IL_0042:  endfilter
System.Text.Json.dll.dis.txt:      IL_0148:  endfilter
System.Text.Json.dll.dis.txt:      IL_0183:  endfilter
System.Text.Json.dll.dis.txt:      IL_002e:  endfilter

Author:	radekdoulik
Assignees:	radekdoulik
Labels:	arch-wasm, area-Interop-mono, area-VM-meta-mono
Milestone:	Future

[stephentoub]

This was discussed here:
#47197 (comment)
To quote @jkotas: "Undoing use of exception filters sounds like a step backward to me."