https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106943
Bug ID: 106943
Summary: GCC building clang/llvm with LTO flags causes ICE in
clang
Product: gcc
Version: 12.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: immoloism at googlemail dot com
Target Milestone: ---
Created attachment 53574
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53574&action=edit
ICE error
I've found an interesting ICE which only occurs when LTO flags are turned on in
GCC while building clang and llvm while compiling compiler-rt-sanitizers. If I
rebuild clang/llvm without the flto cflags then the bug does not appear.
CFLAGS used to build clang/llvm "-march=native -O2 -pipe -fgraphite-identity
-floop-nest-optimize -flto=8 -fuse-linker-plugin -falign-functions=32"
This is the first time I've run into anything like this so please ask if any
other files or tests will help you identify the cause and I'd be happy to
oblige.
I have reported this to the LLVM team and they believe this could be an issue
your end so hopefully you have some ideas to add.
