[Bug target/72851] New: [6/7 Regression] memory hog with -O3 on s390x-linux-gnu

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72851

            Bug ID: 72851
           Summary: [6/7 Regression] memory hog with -O3 on
                    s390x-linux-gnu
           Product: gcc
           Version: 6.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at gcc dot gnu.org
  Target Milestone: ---

Created attachment 39087
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39087&action=edit
preprocessed source

seen with the gcc-6-branch and trunk 20160804

gcc -g -O3 -std=c99 -fPIC -pthread -c des.i

allocates all available memory, and then is killed. Workaround is to build with
-O2.