https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83375
Bug ID: 83375
Summary: partitioner partitions static arrays with label
references
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: andi-gcc at firstfloor dot org
CC: marxin at gcc dot gnu.org
Target Milestone: ---
Created attachment 42842
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42842&action=edit
test case
I thought there was already a bug for this, but can't find it right now.
When &&labels are put into static arrays the LTO partitioner can put the static
into a different partition, which causes an assembler error because the code
labels are local.
This breaks Linux kernel LTO builds.
See attached test case.
I think ipa-comdats should put the function and the static into the same
partition, but for some reason it doesn't work.
Attached test case shows the problem with -flto-partition=1to1 -flto -O2
