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compiler: Patch Guards.simplify_and #2334

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Mar 18, 2024
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compiler: Patch Guards.simplify_and #2334

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15 changes: 10 additions & 5 deletions devito/ir/support/guards.py
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Original file line number Diff line number Diff line change
Expand Up @@ -296,11 +296,16 @@ def simplify_and(relation, v):
for a in candidates:
if a.lhs is v.lhs:
covered = True
if type(a) in (Gt, Ge) and v.rhs > a.rhs:
new_args.append(v)
elif type(a) in (Lt, Le) and v.rhs < a.rhs:
new_args.append(v)
else:
try:
if type(a) in (Gt, Ge) and v.rhs > a.rhs:
new_args.append(v)
elif type(a) in (Lt, Le) and v.rhs < a.rhs:
new_args.append(v)
else:
new_args.append(a)
except TypeError:
# E.g., `v.rhs = const + z_M` and `a.rhs = z_M`, so the inequalities
# above are not evaluable to True/False
new_args.append(a)
else:
new_args.append(a)
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