llvm-project

f3341941 - [BasicAA] Use KnownBits trailing zeros to boost GCD in modular aliasing check (#187297)

[BasicAA] Use KnownBits trailing zeros to boost GCD in modular aliasing check (#187297) If a GEP variable index V has known trailing zeros, shift ScaleForGCD left by that amount to capture the larger stride. This helps patterns like `and %x, -Align` that GetLinearExpression cannot fold into Scale.