[PATCH] D87448: [CodeGen] [WinException] Only produce handler data at the end of the function if needed

[Hans Wennborg via Phabricator via llvm-commits]

hans added a comment.

Thanks for the pointers!



================
Comment at: llvm/lib/MC/MCStreamer.cpp:695
 
+  CurrentProcWinFrameInfoStart = WinFrameInfos.size();
   WinFrameInfos.emplace_back(
----------------
mstorsjo wrote:
> hans wrote:
> > When I first saw this variable name I thought it was some kind of offset. But now I see it's really an index into WinFrameInfos.
> > 
> > Maybe CurrentProcWinFrameInfoIndex would be a better name? And should it be initialized to -1 or some other invalid value rather than 0, since I assume it should always be set here before it's used?
> Initializing to -1 should be fine, this is pretty tightly checked to be called in pairs only.
> 
> I can change the name, but it isn't necessarily the index of one single frame, but the start index to a range of frames, from startindex to the end of the vector.
Maybe StartIndex, then? Or just leave as it is I suppose, it becomes clear when looking at how it's used.


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