[dev.ssa] cmd/compile/internal/gc: handle local function declarations
[dev.ssa] cmd/compile/internal/gc: handle local function declarations

They are already handled by the frontend, we just need to
skip them when we see them in ssa.

Change-Id: I309d91552f96a761f8d429a2cab3a47d200ca9e5
Reviewed-on: https://go-review.googlesource.com/14341
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

ImJasonH/go,vsekhar/elastic-go,goodlang/good,Samurais/go,miolini/go,ganboing/go-esx,mwhudson/go,akutz/go,polyverse-security/go,momchil-velikov/go,ImJasonH/go,ganboing/go-esx,vanloswang/go,vanloswang/go,mwhudson/go,vanloswang/go,vanloswang/go,miolini/go,linux-on-ibm-z/go,ganboing/go-esx,4ad/go,Samurais/go,polyverse-security/go,4ad/go,miolini/go,theif519/go,polyverse-security/go,goodlang/good,4ad/go,linux-on-ibm-z/go,derekmarcotte/go,ganboing/go-esx,CAFxX/go,4ad/go,vanloswang/go,josharian/go,ImJasonH/go,josharian/go,nawawi/go,akutz/go,theif519/go,binarycrusader/go,ganboing/go-esx,suncycheng/go,suncycheng/go,mwhudson/go,goodlang/good,vsekhar/elastic-go,momchil-velikov/go,miolini/go,ImJasonH/go,Cofyc/go,mwhudson/go,theif519/go,cloudflare/go,codestation/go,golang/go,polyverse-security/go,miolini/go,cloudflare/go,Samurais/go,josharian/go,Cofyc/go,akutz/go,christopher-henderson/Go,momchil-velikov/go,derekmarcotte/go,goodlang/good,cloudflare/go,theif519/go,binarycrusader/go,ImJasonH/go,derekmarcotte/go,codestation/go,suncycheng/go,codestation/go,golang/go,suncycheng/go,CAFxX/go,theif519/go,josharian/go,linux-on-ibm-z/go,goodlang/good,golang/go,momchil-velikov/go,binarycrusader/go,suncycheng/go,Samurais/go,mwhudson/go,golang/go,miolini/go,akutz/go,cloudflare/go,nawawi/go,CAFxX/go,polyverse-security/go,akutz/go,Cofyc/go,nawawi/go,vsekhar/elastic-go,josharian/go,linux-on-ibm-z/go,codestation/go,josharian/go,codestation/go,Cofyc/go,4ad/go,golang/go,linux-on-ibm-z/go,cloudflare/go,golang/go,josharian/go,theif519/go,cloudflare/go,ganboing/go-esx,momchil-velikov/go,golang/go,derekmarcotte/go,4ad/go,ImJasonH/go,akutz/go,vsekhar/elastic-go,codestation/go,vanloswang/go,derekmarcotte/go,CAFxX/go,vsekhar/elastic-go,cloudflare/go,ImJasonH/go,nawawi/go,vsekhar/elastic-go,akutz/go,ganboing/go-esx,vanloswang/go,akutz/go,derekmarcotte/go,mwhudson/go,binarycrusader/go,4ad/go,theif519/go,ImJasonH/go,CAFxX/go,CAFxX/go,ganboing/go-esx,CAFxX/go,goodlang/good,nawawi/go,binarycrusader/go,theif519/go,Samurais/go,suncycheng/go,momchil-velikov/go,Cofyc/go,miolini/go,nawawi/go,codestation/go,binarycrusader/go,binarycrusader/go,cloudflare/go,Samurais/go,vsekhar/elastic-go,mwhudson/go,momchil-velikov/go,Samurais/go,mwhudson/go,josharian/go,Samurais/go,vsekhar/elastic-go,Cofyc/go,Cofyc/go,goodlang/good,CAFxX/go,suncycheng/go,polyverse-security/go,miolini/go,codestation/go,derekmarcotte/go,4ad/go,polyverse-security/go,suncycheng/go,goodlang/good,linux-on-ibm-z/go,vanloswang/go,nawawi/go,binarycrusader/go,linux-on-ibm-z/go,linux-on-ibm-z/go,nawawi/go,Cofyc/go,momchil-velikov/go,polyverse-security/go,golang/go,derekmarcotte/go