https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81689
Bug ID: 81689
Summary: libgomp.c/target-link-1.c fails for nvptx: #pragma omp
target link not implemented
Product: gcc
Version: 8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libgomp
Assignee: unassigned at gcc dot gnu.org
Reporter: vries at gcc dot gnu.org
CC: jakub at gcc dot gnu.org
Target Milestone: ---
The error looks like:
...
ptxas /tmp/ccOmk7fK.o, line 102; error : State space mismatch between
instruction and address in instruction 'ld'^M
ptxas /tmp/ccOmk7fK.o, line 121; error : State space mismatch between
instruction and address in instruction 'ld'^M
ptxas /tmp/ccOmk7fK.o, line 126; error : State space mismatch between
instruction and address in instruction 'ld'^M
ptxas /tmp/ccOmk7fK.o, line 231; error : State space mismatch between
instruction and address in instruction 'ld'^M
ptxas /tmp/ccOmk7fK.o, line 252; error : State space mismatch between
instruction and address in instruction 'ld'^M
ptxas /tmp/ccOmk7fK.o, line 289; error : State space mismatch between
instruction and address in instruction 'ld'^M
ptxas /tmp/ccOmk7fK.o, line 294; error : State space mismatch between
instruction and address in instruction 'ld'^M
ptxas /tmp/ccOmk7fK.o, line 301; error : State space mismatch between
instruction and address in instruction 'ld'^M
ptxas /tmp/ccOmk7fK.o, line 102; error : Unknown symbol 'a_linkptr'^M
ptxas /tmp/ccOmk7fK.o, line 102; fatal : Label expected for forward reference
of 'a_linkptr'^M
ptxas fatal : Ptx assembly aborted due to errors^M
nvptx-as: ptxas returned 255 exit status^M
mkoffload: fatal error: x86_64-none-linux-gnu-accel-nvptx-none-gcc returned 1
exit status^M
compilation terminated.^M
...
The problem is that #pragma omp target link is not implemented for nvptx, as
mentioned before here (
https://gcc.gnu.org/ml/gcc-patches/2016-11/msg00972.html ):
...
With OpenMP/PTX offloading there are 5 additional failures in
check-target-libgomp:
<SNIP>
One with 'target link' (not implemented)
FAIL: libgomp.c/target-link-1.c (test for excess errors)
...
