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Author SHA1 Message Date
Archibald Elliott
7d15212b8c [ARM] Support fp16/bf16 using w constraint 
fp16 and bf16 values can be used in GCC's inline assembly using the "w"
constraint, which means "VFP floating-point registers d0-d31" - fp16 and
bf16 values are stored in S registers (which alias the D registers).

This change ensures that LLVM is compatible with GCC for programs that
use fp16 and the 'w' constraint.

Differential Revision: https://reviews.llvm.org/D135662
 2022-10-13 10:32:06 +01:00
Archibald Elliott
ff4027d152 [ARM] Support fp16/bf16 using t constraint 
fp16 and bf16 values can be used in GCC's inline assembly using the "t"
constraint, which means "VFP floating-point registers s0-s31" - fp16 and
bf16 values are stored in S registers too.

This change ensures that LLVM is compatible with GCC for programs that
use fp16 and the 't' constraint.

Fixes #57753

Differential Revision: https://reviews.llvm.org/D134553
 2022-09-28 14:48:21 +01:00