Craig Topper e620eac75e [SelectionDAG][RISCV][SVE] Harden fixed offset version of ComputeValueVTs against scalable offsets. ...

Use getFixedValue instead of getKnownMinValue to convert TypeSize
to uint64_t. I believe this would have caught the bug fixed by
D157872.

To prevent false failures, I had to treat a scalable 0 as if it
is fixed value.

Reviewed By: paulwalker-arm

Differential Revision: https://reviews.llvm.org/D158115

2023-08-21 10:36:17 -07:00

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