[Bug testsuite/126866] rs6000: gcc.target/powerpc/mma-double-test.c fails on Power10 big-endian.

[jskumari at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126866

--- Comment #4 from Surya Kumari Jangala <jskumari at gcc dot gnu.org> ---
(In reply to Manjunath S Matti from comment #1)

> PR96236 handles the little-endian memory ordering in the backend
> rs6000_gimple_fold_mma_builtin. 

PR96236 is for __builtin_mma_disassemble_acc. This PR really doesn't shed any
light on how __builtin_mma_assemble_pair should behave. Instead, we can look
at how __builtin_mma_build_acc works.