[PATCH] D95929: [CSSPGO][llvm-profgen] Add brackets for context id to support extended binary format

[Lei Wang via Phabricator via llvm-commits]

wlei added inline comments.


================
Comment at: llvm/tools/llvm-profgen/ProfileGenerator.h:70
     // Enable context-sensitive functionalities in SampleProf
     FunctionSamples::ProfileIsCS = true;
     for (const auto &BI : BinarySampleCounters) {
----------------
wlei wrote:
> hoy wrote:
> > This should be removed since now every context has brackets.
> It seems it also depends on this variable, see the code below. I saw your previous patch set it in the `SampleProfReader ` but llvm-profgen only use the `SampleProfWriter`.
> 
> ```
>   /// Return function name with context.
>   StringRef getNameWithContext(bool WithBracket = false) const {
>     return FunctionSamples::ProfileIsCS
>                ? Context.getNameWithContext(WithBracket)
>                : Name;
>   }
> ```
> 
> I can understand we should automatically detect this, so how about to change the `Writer` to add some detection, say if the name has the bracket then set the `ProfileIsCS`?
> 
> 
Seems there aren't a central place in `Writer` to detect it, the `write` function is override by different format.
or how about code like this,  we ensure the `Context` is always valid for CS profile, right?
```
  StringRef getNameWithContext(bool WithBracket = false) const {
    return Context.getNameWithContext().size()?
            Context.getNameWithContext(WithBracket) : Name ;
```


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D95929/new/

https://reviews.llvm.org/D95929