[dev.ssa] cmd/compile: log progs during ssa codegen
[dev.ssa] cmd/compile: log progs during ssa codegen

This is helpful when debugging generated code.

Change-Id: I268efa3593a03bb2c4e9f07d9034c004cd40df41
Reviewed-on: https://go-review.googlesource.com/13099
Reviewed-by: Keith Randall <8c99c3a9284e493be632950b84cd789d08ed3e9d@golang.org>

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