https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63870
--- Comment #1 from Alan Lawrence <alan.lawrence at arm dot com> --- Same problem on AArch64, although the error messages are a little different (and varied) - this is following r217440 which provides some improvement in some cases: $ /work/alalaw01/sbuild/install/bin/aarch64-none-elf-gcc -c -O2 neon_const_range_tests/* In file included from neon_const_range_tests/vld1.c:2:0: /work/alalaw01/sbuild/install/lib/gcc/aarch64-none-elf/5.0.0/include/arm_neon.h: In function 'f_vld1_lane': /work/alalaw01/sbuild/install/lib/gcc/aarch64-none-elf/5.0.0/include/arm_neon.h:658:10: error: lane -1 out of range 0 - 7 return __aarch64_vset_lane_any (__vec, __index, __elem, 8); ^ In file included from neon_const_range_tests/vld4.c:2:0: /work/alalaw01/sbuild/install/lib/gcc/aarch64-none-elf/5.0.0/include/arm_neon.h: In function 'f_vld4_lane': /work/alalaw01/sbuild/install/lib/gcc/aarch64-none-elf/5.0.0/include/arm_neon.h:18111:1: error: lane -1 out of range 0 - 15 __LD4_LANE_FUNC (int8x8x4_t, int8x8_t, int8x16x4_t, int8_t, v16qi, qi, s8, ^ /tmp/ccKedD22.s: Assembler messages: /tmp/ccKedD22.s:9: Error: register element index out of range 0 to 7 at operand 3 -- `mul v0.8h,v0.8h,v1.h[-1]' /tmp/ccKedD22.s: Assembler messages: /tmp/ccKedD22.s:10: Error: immediate value out of range 1 to 8 at operand 3 -- `shrn v0.8b,v0.8h,9'