https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80159
Bug ID: 80159
Summary: [7 regression] gcc takes very link time with -Os
Product: gcc
Version: 7.0.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: ipa
Assignee: unassigned at gcc dot gnu.org
Reporter: arnd at linaro dot org
Target Milestone: ---
Created attachment 41032
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41032&action=edit
linux/fs/eventpoll.c, preprocessed, compressed
After upgrading to r246365 and doing a few hundred linux kernel builds, I ran
into one file that apparently never completes the compilation. I've verified
the problem still exists on r246414.
To reproduce with an x86 compiler:
cc1 -m32 -Os -Wall -fno-strict-aliasing -Wno-attributes -Wno-unused-parameter
-Wno-sign-compare -Wno-pointer-sign eventpoll.i
Compilation stops after this output:
Performing interprocedural optimizations
<*free_lang_data> <visibility> <build_ssa_passes> <opt_local_passes>
<targetclone> <free-inline-summary> <whole-program> <profile_estimate> <icf>
<devirt> <cp> <inline> <pure-const> <static-var> <single-use>
<comdats>Assembling functions:
<materialize-all-clones> <simdclone> ep_item_poll epi_rcu_free list_add_tail
ep_ptable_queue_proc __list_del_entry ep_wakeup_source ep_destroy_wakeup_source
ep_poll_wakeup_proc rcu_read_lock rcu_read_unlock clear_tfile_check_list
ep_unregister_pollwait.isra.14 ep_read_events_proc list_add ep_send_events_proc
