ggml-org/llama.cpp b11853

on GitHub

HIP: add byte permute fallback when __builtin_amdgcn_perm is unavailable (#30915)

• HIP: add byte permute fallback when __builtin_amdgcn_perm is unavailable

amdgcnspirv rejects target-specific builtins unless they are guarded by __builtin_amdgcn_is_invocable, so 66 of 145 HIP files failed to build

Wrap the perm calls in a helper that keeps v_perm_b32 when the target has it and falls back to a portable byte select otherwise

• move perm helper to vendors/hip.h