Add a fixed_size_mode_pod class

This patch adds a POD version of fixed_size_mode.  The only current use
is for storing the __builtin_apply and __builtin_result register modes,
which were made fixed_size_modes by the previous patch.

2018-01-03  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* coretypes.h (fixed_size_mode): Declare.
	(fixed_size_mode_pod): New typedef.
	* builtins.h (target_builtins::x_apply_args_mode)
	(target_builtins::x_apply_result_mode): Change type to
	fixed_size_mode_pod.
	* builtins.c (apply_args_size, apply_result_size, result_vector)
	(expand_builtin_apply_args_1, expand_builtin_apply)
	(expand_builtin_return): Update accordingly.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r256193

1 files changed, 2 insertions, 2 deletions

diff --git a/gcc/builtins.h b/gcc/builtins.h
index 8cc868f..c922904 100644
--- a/gcc/builtins.h
+++ b/gcc/builtins.h
@@ -29,14 +29,14 @@ struct target_builtins {
      the register is not used for calling a function.  If the machine
      has register windows, this gives only the outbound registers.
      INCOMING_REGNO gives the corresponding inbound register.  */
-  machine_mode x_apply_args_mode[FIRST_PSEUDO_REGISTER];
+  fixed_size_mode_pod x_apply_args_mode[FIRST_PSEUDO_REGISTER];
 
   /* For each register that may be used for returning values, this gives
      a mode used to copy the register's value.  VOIDmode indicates the
      register is not used for returning values.  If the machine has
      register windows, this gives only the outbound registers.
      INCOMING_REGNO gives the corresponding inbound register.  */
-  machine_mode x_apply_result_mode[FIRST_PSEUDO_REGISTER];
+  fixed_size_mode_pod x_apply_result_mode[FIRST_PSEUDO_REGISTER];
 };
 
 extern struct target_builtins default_target_builtins;