https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100208
Bug ID: 100208
Summary: amdgcn fails to build with llvm-mc from llvm12
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
It fails configuring the target libgcc for the gfx908 multilib like
configure:3566:
/home/abuild/rpmbuild/BUILD/gcc-11.0.1+git10/obj-x86_64-suse-linux/./gcc/xgcc
-B/home/abuild/rpmbuild/BUILD/gcc-11.0.1+git10/obj-x86_64-suse-linux/./gcc/
-nostdinc
-B/home/abuild/rpmbuild/BUILD/gcc-11.0.1+git10/obj-x86_64-suse-linux/amdgcn-amdhsa/gfx908/newlib/
-isystem
/home/abuild/rpmbuild/BUILD/gcc-11.0.1+git10/obj-x86_64-suse-linux/amdgcn-amdhsa/gfx908/newlib/targ-include
-isystem /home/abuild/rpmbuild/BUILD/gcc-11.0.1+git10/newlib/libc/include
-B/usr/amdgcn-amdhsa/bin/ -B/usr/amdgcn-amdhsa/lib/ -isystem
/usr/amdgcn-amdhsa/include -isystem /usr/amdgcn-amdhsa/sys-include
-march=gfx908 -o conftest -g -O2 conftest.c >&5
/tmp/ccAA4X08.s:1:17: error: target must match options
.amdgcn_target "amdgcn-unknown-amdhsa--gfx908+sram-ecc"
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
configure:3569: $? = 1
...
configure:3824: error: cannot compute suffix of object files: cannot compile
See `config.log' for more details
The other multilibs seem to configure fine. It works when using llvm-mc from
llvm11. The gcc-10 branch also seems fine since it doesn't have this
particular multilib.
