yzhliu commented on a change in pull request #5618:
URL: https://github.com/apache/incubator-tvm/pull/5618#discussion_r446359262
##########
File path: python/tvm/testing.py
##########
@@ -188,5 +189,96 @@ def assert_prim_expr_equal(lhs, rhs):
raise ValueError("{} and {} are not equal".format(lhs, rhs))
+def check_bool_expr_is_true(bool_expr, vranges, cond=None):
+ """ Check that bool_expr holds given the condition cond
+ for every value of free variables from vranges.
+
+ Parameters
+ ----------
+ bool_expr : tvm.ir.expr.PrimExpr
+ Boolean expression to check
+ vranges: Dict[tvm.tir.expr.Var, tvm.ir.Range]
+ Free variables and their ranges
+ cond: tvm.ir.expr.PrimExpr
+ extra conditions needs to be satisfied.
+ """
+ if cond is not None:
+ bool_expr = tvm.te.any(tvm.tir.Not(cond), bool_expr)
Review comment:
for example, `2x > 4y` solves to `x > 2y` given x \in (0, 10), y \in (0,
10)
It essentially creates iterations
```python
for x in range(10):
for y in range(10):
assert !(2x > 4y) || (x > 2y)
```
I'll add the above to the comments
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