Efficient filtered functions in Evd. We test that a filter is actually different from the identity before trying to compute filtered env/hyps.
Efficient filtered functions in Evd. We test that a filter is actually
different from the identity before trying to compute filtered env/hyps.

According to profiling, it seems that the filter operation is NEVER taken,
that is, all filters that reach toplevel are dummy. There is surely something
to do here...

git-svn-id: 44dc50bdcc0f5d1a212c497508dc9452e0b35e2b@16960 85f007b7-540e-0410-9357-904b9bb8a0f7

maximedenes/coq,barras/coq,pirapira/coq2rust,TOSPIO/coq,mattam82/coq,Zimmi48/coq,ppedrot/coq,maximedenes/coq,amintimany/coq,coq/coq,letouzey/coq-wip,aspiwack/coq,herbelin/github-coq,jpdeplaix/coq,pirapira/coq2rust,william-lawvere/coq,mattam82/coq,silene/coq,Zimmi48/coq,coq/coq,Matafou/coq,ppedrot/coq,jpdeplaix/coq,Ptival/coq,amintimany/coq,aspiwack/coq,silene/coq,william-lawvere/coq,aspiwack/coq,ale-f/coq,TheTypoMaster/coq,silene/coq,ale-f/coq,pirapira/coq2rust,jpdeplaix/coq,ejgallego/coq,gares/coq,Ptival/coq,Matafou/coq,Lionel-Rieg/coq,ejgallego/coq,pirbo/coq,mlasson/coq,Zimmi48/coq,mlasson/coq,SkySkimmer/coq,Zimmi48/coq,gares/coq,shindere/coq,TOSPIO/coq,gares/coq,mlasson/coq,letouzey/coq-wip,herbelin/github-coq,TheTypoMaster/coq,gmalecha/coq,8l/coq,8l/coq,gmalecha/coq,maximedenes/coq,ejgallego/coq,ppedrot/coq,Ptival/coq,herbelin/github-coq,JasonGross/coq,mattam82/coq,Matafou/coq,asr/coq,Lionel-Rieg/coq,asr/coq,coq/coq,JasonGross/coq,pirbo/coq,shindere/coq,maximedenes/coq,8l/coq,JasonGross/coq,gares/coq,asr/coq,ppedrot/coq,SkySkimmer/coq,letouzey/coq-wip,letouzey/coq-wip,gmalecha/coq,barras/coq,coq/coq,amintimany/coq,Lionel-Rieg/coq,ejgallego/coq,pirbo/coq,TOSPIO/coq,ale-f/coq,shindere/coq,JasonGross/coq,SkySkimmer/coq,maximedenes/coq,SkySkimmer/coq,letouzey/coq-wip,william-lawvere/coq,ppedrot/coq,barras/coq,TheTypoMaster/coq,gares/coq