rs6000.c (direct_return): Check if we are saving altivec registers.
* rs6000.c (direct_return): Check if we are saving altivec
registers.
(first_altivec_reg_to_save): New.
Updated stack frame layout comments.
(rs6000_stack_info): Calculate altivec register save size.
Save link register if we saved some altivec registers.
(rs6000_stack_info): Align save size to 16 if altivec abi or
abi_darwin.
(rs6000_stack_info): Calculate altivec register offsets.
(rs6000_stack_info): Add altivec info to save_size.
(debug_stack_info): Add altivec debug info.
(rs6000_emit_prologue): Save altivec registers and vrsave.
(compute_vrsave_mask): New.
(altivec_expand_builtin): Remove unused variables.
(rs6000_parse_abi_options): Add static qualifier.
(rs6000_expand_builtin): Remove unused parameters.
(altivec_expand_builtin): Cast bdesc_2arg to get rid of warning.
(altivec_init_builtins): Same.
(is_altivec_return_reg): New.
(vrsave_operation): New.
(ALTIVEC_REG_BIT): New.
(generate_set_vrsave): New.