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Re: [PATCH] Fix DCE REG_LIBCALL note moving from noop move insns (PR rtl-optimization/33644)
On Fri, Oct 19, 2007 at 07:23:05PM +0200, Paolo Bonzini wrote:
> >If we want to change the meaning or the interpretation to clean this up,
> >I'm all for it, but I think it's too late to do that for 4.3.
> I don't think that this is 4.3 material anyway, except for Eric's DCE patch.
The removal of libcall notes from TLS sequences surely is not 4.3 material.
But not DCEing CONST_OR_PURE_CALL_P calls or insns with UNSPECs inside of
PARALLELs is IMHO a regression from 4.2 and as such should be fixed.