Fangrui Song 2131115be5 [InstCombine] Drop Range attribute when simplifying 'fshl' based on demanded bits (#124429) ...

When simplifying operands based on demanded bits, the return value range
of llvm.fshl might change. Keeping the Range attribute might cause
llvm.fshl to generate a poison and lead to miscompile. Drop the Range
attribute similar to `dropPosonGeneratingFlags` elsewhere.

Fix #124387

2025-01-25 13:35:11 -08:00

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