Hi,
CC'd Thomas.
FYI the newly added file libgcc/strub.c of this patch (aka commit
r14-6201-gf0a90c7d7333fc )
causes that nvptx does not bootstrap, failing with:
./gcc/as -v -o strub.o strub.s
Verifying sm_30 code with sm_50 code generation.
ptxas -c -o /dev/null strub.o --gpu-name sm_50 -O0
ptxas strub.o, line 22; error : Arguments mismatch for instruction 'st'
ptxas strub.o, line 22; error : Unknown symbol '%frame'
ptxas strub.o, line 37; error : Arguments mismatch for instruction 'setp'
ptxas strub.o, line 40; error : Arguments mismatch for instruction 'st'
ptxas strub.o, line 37; error : Unknown symbol '%frame'
ptxas strub.o, line 40; error : Unknown symbol '%frame'
ptxas strub.o, line 59; error : Arguments mismatch for instruction 'mov'
ptxas strub.o, line 67; error : Arguments mismatch for instruction 'setp'
ptxas strub.o, line 59; error : Unknown symbol '%stack'
ptxas strub.o, line 67; error : Unknown symbol '%stack'
ptxas fatal : Ptx assembly aborted due to errors
nvptx-as: ptxas returned 255 exit status
That's
.visible .func __strub_enter (.param.u64 %in_ar0)
{
.reg.u64 %ar0;
ld.param.u64 %ar0, [%in_ar0];
.reg.u64 %r23;
mov.u64 %r23, %ar0;
st.u64 [%r23], %frame;
...
setp.le.u64 %r26, %r25, %frame;
...
Tobias
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