The IFN_GOMP_SIMD_LANE code in vectorizable_call is essentially a
duplicate of
the code in vectorizable_live_operation. They both replace all uses
outside the
loop with the constant VF - 1.

Note that my patch to vectorize inductions that are live after the loop
will
also remove the IFN_GOMP_SIMD_LANE code in vectorizable_live_operation.

This patch is required in order for the follow on optimisation (No need to
Vectorise simple only-live stmts) to work.

Tested with libgomp on x86 and aarch64

gcc/
    * tree-vect-stmts.c (vectorizable_call) Remove GOMP_SIMD_LANE code.

Alan.