On Jun 22, 2017, Alexandre Oliva <aol...@redhat.com> wrote: > The patch below (is this what you meant?) fixes the PR testcase, and the > new else block doesn't get exercised in an x86_64-linux-gnu bootstrap.
Err, I misdescribed the situation. It's not that it doesn't get exercised, it's that this new block doesn't make any noticeable difference in the generated code. I checked that by adding a new option in common.opt, running the new block conditionally on the new option, building stage1 host normally, then continuing bootstrap with GCC_COMPARE_DEBUG=-fthe-new-option set in the environment, building target libs and stage2 build and host like that. GCC_COMPARE_DEBUG, like -fcompare-debug, checks that the compiler dumps at final are the same. -- Alexandre Oliva, freedom fighter http://FSFLA.org/~lxoliva/ You must be the change you wish to see in the world. -- Gandhi Be Free! -- http://FSFLA.org/ FSF Latin America board member Free Software Evangelist|Red Hat Brasil GNU Toolchain Engineer
