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Re: My proposal for the libgcc runtime ABI (ia64 gcc/glibc is broken.)
- To: Richard Henderson <rth at cygnus dot com>
- Subject: Re: My proposal for the libgcc runtime ABI (ia64 gcc/glibc is broken.)
- From: David Edelsohn <dje at watson dot ibm dot com>
- Date: Tue, 11 Jul 2000 19:10:04 -0400
- Cc: Ulrich Drepper <drepper at cygnus dot com>, Mark Kettenis <kettenis at wins dot uva dot nl>, hjl at valinux dot com, rth at twiddle dot net, libc-hacker at sourceware dot cygnus dot com, gcc at gcc dot gnu dot org, Jeffrey A Law <law at cygnus dot com>
>>>>> Richard Henderson writes:
> It'll take more than these two to convince me that we need multilibs on
> natives. Alpha can just as well use -mieee as the default build for
> libgcc.so. The sparc64 variants are used for sizing the memory model,
> which is a non-issue if we put the thing in a DSO.
On AIX, multilibs select different architecture variants. These
can make a lot of difference in the performance of the code generated for
DI helper functions based on longlong.h. It is not clear that forcing
everyone to use the "common-mode" versions of the library for correct EH
behavior is acceptable.
David