[Bug target/102260] New: amdgcn offload compiler fails to configure, not matching target directive's target id

[Bug target/102260] New: amdgcn offload compiler fails to configure, not matching target directive's target id

[doko at debian dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102260

            Bug ID: 102260
           Summary: amdgcn offload compiler fails to configure, not
                    matching target directive's target id
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: doko at debian dot org
  Target Milestone: ---

building the amdgcn offload compiler using the current trunk fails with newer
LLVM versions (used as the "binutils). LLVM 9 is known to work, LLVM 10 to 13
don't work, with LLVM 13 bailing outin the libgcc gfx900 configure:

configure:3566: /packages/gcc/snap/gcc-snapshot-20210909/build-gcn/./gcc/xgcc
-B/packages/gcc/snap/gcc-snapshot-20210909/build-gc
n/./gcc/ -nostdinc
-B/packages/gcc/snap/gcc-snapshot-20210909/build-gcn/amdgcn-amdhsa/gfx900/newlib/
-isystem /packages/gcc/snap/
gcc-snapshot-20210909/build-gcn/amdgcn-amdhsa/gfx900/newlib/targ-include
-isystem /packages/gcc/snap/gcc-snapshot-20210909/src-gc
n/newlib/libc/include -B/usr/lib/gcc-snapshot/amdgcn-amdhsa/bin/
-B/usr/lib/gcc-snapshot/amdgcn-amdhsa/lib/ -isystem /usr/lib/gcc
-snapshot/amdgcn-amdhsa/include -isystem
/usr/lib/gcc-snapshot/amdgcn-amdhsa/sys-include  -march=gfx900 -o conftest -g
-O2   conf
test.c  >&5
/tmp/ccuvyB8E.s:1:17: error: .amdgcn_target directive's target id
amdgcn-unknown-amdhsa--gfx900 does not match the specified targ
et id amdgcn-unknown-amdhsa--gfx900:xnack-
        .amdgcn_target "amdgcn-unknown-amdhsa--gfx900"
                       ^

[Bug target/102260] amdgcn offload compiler fails to configure, not matching target directive's target id

[ams at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102260

Andrew Stubbs <ams at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2021-09-09
     Ever confirmed|0                           |1
           Assignee|unassigned at gcc dot gnu.org      |ams at gcc dot gnu.org

--- Comment #1 from Andrew Stubbs <ams at gcc dot gnu.org> ---
In addition to changing the amdgcn_target syntax in LLVM 13, the LLVM GCN guys
have also renamed the "sram-ecc" attribute to "sramecc" on the CLI, and have
not provided any backwards compatibility for either change.

These are not helpful decisions and will require configure tests in GCC to
support all the variations. :-(

I'm working on it.

[Bug target/102260] amdgcn offload compiler fails to configure, not matching target directive's target id

[doko at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102260

Matthias Klose <doko at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED
                 CC|                            |doko at gcc dot gnu.org

--- Comment #2 from Matthias Klose <doko at gcc dot gnu.org> ---
closing this one, LLVM 15, 16, 17 are known to work