aarch64: Mark __builtin_aarch64_im_lane_boundsi as leaf and nothrow [PR117665]

aarch64: Mark __builtin_aarch64_im_lane_boundsi as leaf and nothrow [PR117665]

__builtin_aarch64_im_lane_boundsi is known not to throw or call back into another
function since it will either folded into an NOP or will produce a compiler error.

This fixes the ICE by fixing the missed optimization. It does not fix the underlying
issue with fold_marked_statements; which I filed as PR 117668.

Built and tested for aarch64-linux-gnu.

	PR target/117665

gcc/ChangeLog:

	* config/aarch64/aarch64-builtins.cc (aarch64_init_simd_builtin_functions):
	Pass nothrow and leaf as attributes to aarch64_general_add_builtin for
	__builtin_aarch64_im_lane_boundsi.

gcc/testsuite/ChangeLog:

	* g++.target/aarch64/lane-bound-1.C: New test.
	* gcc.target/aarch64/lane-bound-3.c: New test.

Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>