Source: numba
Followup-For: Bug #994294
numba test options give a better more detail
experimental_armel-dchroot$ python3 -m numba.runtests --log
DEBUG:numba.core.byteflow:bytecode dump:
> 0 NOP(arg=None, lineno=38)
2 LOAD_FAST(arg=0, lineno=38)
4 LOAD_FAST(arg=1, lineno=38)
6 BINARY_ADD(arg=None, lineno=38)
8 RETURN_VALUE(arg=None, lineno=38)
DEBUG:numba.core.byteflow:pending: deque([State(pc_initial=0 nstack_initial=0)])
DEBUG:numba.core.byteflow:stack: []
DEBUG:numba.core.byteflow:dispatch pc=0, inst=NOP(arg=None, lineno=38)
DEBUG:numba.core.byteflow:stack []
DEBUG:numba.core.byteflow:dispatch pc=2, inst=LOAD_FAST(arg=0, lineno=38)
DEBUG:numba.core.byteflow:stack []
DEBUG:numba.core.byteflow:dispatch pc=4, inst=LOAD_FAST(arg=1, lineno=38)
DEBUG:numba.core.byteflow:stack ['$a2.0']
DEBUG:numba.core.byteflow:dispatch pc=6, inst=BINARY_ADD(arg=None, lineno=38)
DEBUG:numba.core.byteflow:stack ['$a2.0', '$b4.1']
DEBUG:numba.core.byteflow:dispatch pc=8, inst=RETURN_VALUE(arg=None, lineno=38)
DEBUG:numba.core.byteflow:stack ['$6binary_add.2']
DEBUG:numba.core.byteflow:end state. edges=[]
DEBUG:numba.core.byteflow:-------------------------Prune
PHIs-------------------------
DEBUG:numba.core.byteflow:Used_phis: defaultdict(<class 'set'>,
{State(pc_initial=0 nstack_initial=0): set()})
DEBUG:numba.core.byteflow:defmap: {}
DEBUG:numba.core.byteflow:phismap: defaultdict(<class 'set'>, {})
DEBUG:numba.core.byteflow:changing phismap: defaultdict(<class 'set'>, {})
DEBUG:numba.core.byteflow:keep phismap: {}
DEBUG:numba.core.byteflow:new_out: defaultdict(<class 'dict'>, {})
DEBUG:numba.core.byteflow:----------------------DONE Prune
PHIs-----------------------
DEBUG:numba.core.byteflow:block_infos State(pc_initial=0 nstack_initial=0):
AdaptBlockInfo(insts=((0, {}), (2, {'res': '$a2.0'}), (4, {'res': '$b4.1'}),
(6, {'lhs': '$a2.0', 'rhs': '$b4.1', 'res': '$6binary_add.2'}), (8, {'retval':
'$6binary_add.2', 'castval': '$8return_value.3'})), outgoing_phis={},
blockstack=(), active_try_block=None, outgoing_edgepushed={})
DEBUG:numba.core.interpreter:label 0:
a = arg(0, name=a) ['a']
b = arg(1, name=b) ['b']
$6binary_add.2 = a + b ['$6binary_add.2', 'a', 'b']
$8return_value.3 = cast(value=$6binary_add.2) ['$6binary_add.2',
'$8return_value.3']
return $8return_value.3 ['$8return_value.3']
DEBUG:numba.core.ssa:==== SSA block analysis pass on 0
DEBUG:numba.core.ssa:Running <numba.core.ssa._GatherDefsHandler object at
0xae276c70>
DEBUG:numba.core.ssa:on stmt: a = arg(0, name=a)
DEBUG:numba.core.ssa:on stmt: b = arg(1, name=b)
DEBUG:numba.core.ssa:on stmt: $6binary_add.2 = a + b
DEBUG:numba.core.ssa:on stmt: $8return_value.3 = cast(value=$6binary_add.2)
DEBUG:numba.core.ssa:on stmt: return $8return_value.3
DEBUG:numba.core.ssa:defs defaultdict(<class 'list'>,
{'$6binary_add.2': [<numba.core.ir.Assign object at 0xae27c0a0>],
'$8return_value.3': [<numba.core.ir.Assign object at 0xae27c118>],
'a': [<numba.core.ir.Assign object at 0xae27c298>],
'b': [<numba.core.ir.Assign object at 0xae27c6d0>]})
DEBUG:numba.core.ssa:SSA violators set()
LLVM ERROR: Symbol not found: __sync_fetch_and_add_4
So, the error is coming from numba.core.ssa
