On Fri, Jan 13, 2023 at 08:25:01PM +0100, Jakub Jelinek via Gcc-patches wrote:
> alignment is 256, which is not <= 16 * BITS_PER_UNIT.
> type is pst_uniform4 with user alignment of 32 bytes:
> struct pst_uniform4
> {
> fixed_int32_t a __attribute__((aligned(SVE_BYTES * 2)));
> fixed_int32_t b[3] __attribute__((aligned(SVE_BYTES * 2)));
> fixed_int32_t c __attribute__((aligned(SVE_BYTES * 2)));
> };
> and with -march=armv8.2-a+sve -msve-vector-bits=128
> __ARM_FEATURE_SVE_BITS and therefore SVE_BYTES is 128 and so
> the alignment seems requested.
typedef __SVInt32_t fixed_int32_t __attribute__ ((arm_sve_vector_bits (128)));
struct A { fixed_int32_t a[3] __attribute__((aligned((128 / 8) * 2))); };
void foo (struct A x) {}
-march=armv8.2-a+sve -O -msve-vector-bits=128
reproduces it too.
Jakub
