Single digits is a huge improvement. This is single digits across billions of programs with no change on their part. In the email Google claimed single digit im

Single digits is a huge improvement. This is single digits across billions of programs with no change on their part. In the email Google claimed single digit improvements and I'm sure they are thrilled. 1% CPU savings across Google is many, many millions of dollars a year. If you contribute a 1% CPU savings change to GCC or LLVM you would have a very hard time being carbon-positive over your lifespan.