[Bug tree-optimization/66070] New: cc1 gets killed by OOM killer

["steffen at hauihau dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66070

            Bug ID: 66070
           Summary: cc1 gets killed by OOM killer
           Product: gcc
           Version: 5.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: steffen at hauihau dot de
  Target Milestone: ---

Created attachment 35496
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35496&action=edit
preprocessed source

Compiling a 32 bit version libaacplus 2.0.2 failed after some time because the
lto1 process for one of the ltrans portions gets killed by the kernel OOM
killer. I've then disabled LTO for the build and detected, that the cc1 process
compiling fram_gen.c gets also killed by the OOM killer. I went on by lastly
disabling graphite and the file compiled fine independent of LTO enabled or
disabled.

Here is the cmdline which leads to the OOM invocation (LTO disabled):
gcc -m32 -march=native -O2 -pipe -ggdb -floop-interchange -floop-strip-mine
-floop-block -ftree-loop-distribution -fira-loop-pressure -ftree-vectorize
-ftree-loop-linear -flto=5 -fuse-linker-plugin -fno-lto -c fram_gen.i  -fPIC
-DPIC -o /dev/null

Please let me know if and how I can help you further.