llvm-project

bded7e9e - [AArch64][GISel] Fix computeKnownBits through a COPY with different fixed-width vector types (#179123)

[AArch64][GISel] Fix computeKnownBits through a COPY with different fixed-width vector types (#179123) Fix an assertion in known bits through a COPY by making computeKnownBits length-aware for different fixed width vectors. If the lengths of the vectors are different all lanes are demanded. Fixes #178242