llvm-project

7fad49b1 - [AArch64][SVE] Prefer FMOV for scalar insert into first element of zero. (#187236)

[AArch64][SVE] Prefer FMOV for scalar insert into first element of zero. (#187236) Currently, when inserting a scalar into the first element of a zero-initialised scalable vector, we zero the register explicitly and emit a predicated move. However, an FMOV should be preferable as it implicitly zeros the upper bits of the destination.