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View of /branches/vis15/src/compiler/TODO

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Revision 4634 - (download) (annotate)
Mon Sep 26 19:52:32 2016 UTC (2 years, 10 months ago) by jhr
File size: 2246 byte(s)
  update TODO list
========================================================
Test case failures:
============================

ertest/test2/gradient2-x3: bad result
**[compare with tests/synthetic/grad_inner_d2]**

========================================================
High-priority things to fix:
============================

code generation for const variables

test eigen* operations

Parallel target:
  - parallel version of strand_array abstraction in runtime
  - new, die
  - queries
  - start methods
  - parallel reduction

========================================================
Medium-priority things to fix:
============================

Name-mangle Diderot identifiers that have non-ASCII
characters in their names (e.g., greek letters)

Support for map-reduce fusion

Support for variance

Direct dynamic sequence initialization from E_Seq

Mechanism to dump basis library for documentation purposes

Improve parallel runtime in various ways:
  1) pre-allocate workers into a worker pool
  2) more efficient barrier sync and spin locks

Apply value numbering to globals to eliminate redundancy (e.g., inside3 test).

Support vector arguments to user functions and strand-creation

Bad propagation of error type leads to an extra error message
Also, when overloading fails, we should print a list of candidates
(see bug008.diderot).

Better naming of meta variables in types when printing error messages.

Code generation improvements:
  complex conditionals
  more use of vector arithmetic
  constant propagation

Allow field definitions at strand scope; to do so means that we need
to prune them away later (since fields don't have a runtime
representation).  We will also need to introduce new shadow
parameters when the field is defined in terms of a parameter.
E.g.,
	strand S (real r) { field#2(3)[] G = r*F; ... }

========================================================
Low-priority things to fix:
============================

Typechecker overhaul: use poly-types for basis, but mono-types for
typechecking expressions (e.g., SimpleTypes).  Use matching instead
of unification.  This approach would require passing the expected type
down into expression checking, but would allow a richer notation for
poly types (e.g., min constraints).


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