For riscv64-linux target, first half of fix for
FAIL: gdb.base/gnu_vector.exp: call add_various_floatvecs
GCC gives vectors natural aligment based on total size, not element size,
bounded by the maximum supported type alignment.
gdb/
* riscv-tdep.c (BIGGEST_ALIGNMENT): New.
(riscv_type_alignment) <TYPE_CODE_ARRAY>: If TYPE_VECTOR, return min
of TYPE_LENGTH and BIGGEST_ALIGNMENT.
2018-11-14 Jim Wilson <jimw@sifive.com>
+ * riscv-tdep.c (BIGGEST_ALIGNMENT): New.
+ (riscv_type_alignment) <TYPE_CODE_ARRAY>: If TYPE_VECTOR, return min
+ of TYPE_LENGTH and BIGGEST_ALIGNMENT.
+
* riscv-tdep.c (riscv_call_arg_scalar_int): Use std::min when
setting len. New local align, set to max of arg align and xlen,
and pass to first riscv_assign_stack_location call.
/* The stack must be 16-byte aligned. */
#define SP_ALIGNMENT 16
+/* The biggest alignment that the target supports. */
+#define BIGGEST_ALIGNMENT 16
+
/* Forward declarations. */
static bool riscv_has_feature (struct gdbarch *gdbarch, char feature);
return TYPE_LENGTH (t);
case TYPE_CODE_ARRAY:
+ if (TYPE_VECTOR (t))
+ return std::min (TYPE_LENGTH (t), (unsigned) BIGGEST_ALIGNMENT);
+ /* FALLTHROUGH */
+
case TYPE_CODE_COMPLEX:
return riscv_type_alignment (TYPE_TARGET_TYPE (t));