llvm-project

cb85dfeb - [VPlan] Skip shl->mul SCEV rewrite for out-of-range shift amounts. (#204921)

[VPlan] Skip shl->mul SCEV rewrite for out-of-range shift amounts. (#204921) getSCEVExprForVPValue rewrites `shl x, c` as `x * (1 << c)` using ScalarEvolution::getPowerOfTwo, which asserts that the power is less than the type's bit width. Only perform the rewrite when the shift amount is less than the operand's bit width, to avoid assertion.