[PATCH] dwarf2asm: Use constexpr for eh_data_format_name initialization for C++14

[Jeff Law]

On 9/18/24 10:04 AM, Jakub Jelinek wrote:
> Hi!
> 
> Similarly to the previous patch, dwarf2asm.cc had
> HAVE_DESIGNATED_INITIALIZERS support, and as fallback a huge switch.
> The switch from what I can see is expanded as a jump table with 256
> label pointers and code at those labels then loads addresses of
> string literals.
> The following patch instead uses a table with 256 const char * pointers,
> NULL for ICE, non-NULL for returning something, similarly to the
> HAVE_DESIGNATED_INITIALIZERS case.
> 
> Bootstrapped/regtested on x86_64-linux and i686-linux, ok for trunk?
> 
> 2024-09-18  Jakub Jelinek  <jakub@redhat.com>
> 
> 	* dwarf2asm.cc (eh_data_format_name): Use constexpr initialization
> 	of format_names table for C++14 instead of a large switch.
Do we want to defer this while the discussion around moving to c++14 
plays out?  Or would you prefer to move forward and if we move to c++14 
come back and simplify?

Jeff