Minutes_2019_03_26 - numba/numba GitHub Wiki

Attendees: Ehsan, Val, Siu, Stuart, Todd

0. Feature Discussion

0.43.1 release
- Any confirmation or complaints?
  - umap ok
- Proceed to tag today?
  - xfail ediff1d test, then tag
Anton's aliasing problem...
- np.shares_memory and np.may_share_memory possible functions to help.
- need intrinsic to get data pointer for pointer-arithmetic
- ctypes ary.ctypes.data : intp? val help
- example:
```
def kernel(*args):
     if no_alias(*args):
         optimal(*args)
     else:
         not_optimal(*args)
```
func_ir.get_definitions() problems
- problem example:
```
def doit(x):
    return x

def bar(pred):
    if pred:
        foo = True
    else:
        foo = False
    # do something with foo
    return doit(foo)
```
- new variable names for foo in different branches
- basically going towards SSA
- this will fix many issues
- hint: interpreter.py and dominator tree & dominance frontier

#3898 - np.ediff1d stricter type checking than numpy
- will depend on numpy fixing it up
#3896 - More than one definition bug
- why we need SSA
#3895 - Initialization of lists and a scalar on the same line fails
- TODO: try dropping the asserts in typeinfer
#3891 - Implement swapaxes
#3889 - Numba 0.43.1 RC checklist
#3888 - np.random.choice doesn't adhere to np.random.seed inside of numba
- there's a open PR to fix this

#3901 - Wrap conditionals in truth to create predicates.
- WIP
#3900 - [WIP] Fix 3457 :: Implements np.repeat
#3899 - WIP: Support for np.quantile and np.nanquantile
#3897 - Fixes numba#3888.
- choice seed problem. need tests
#3894 - Fix array inliner for multiple array definition.
- ready to merge
- "hide" the issue. need the SSA
#3893 - Fix casting in namedtuple ctor.
- Siu is reviewing
#3890 - WIP: Add support for np.delete
#3887 - Add tolerance to network errors by permitting conda to retry