Darshan Bhat 901e543c15 [mlir][Math] Fix math-expand-ops crash on math.ctlz with index type (#181539) ...

Fixes #179847
math.ctlz expansion called getIntOrFloatBitWidth() on the operand type
without checking. Index type has no fixed bitwidth and is not int/float,
so the assertion in Type::getIntOrFloatBitWidth() could fire.

- In convertCtlzOp, bail out with notifyMatchFailure when the element
type is not integer or float, so expansion is only applied to types with
a defined bitwidth.
- Add a test in expand-math.mlir that math.ctlz on index is left
unchanged by the pass (no crash, op preserved).

2026-02-15 23:56:44 +00:00

33 KiB

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