040000 tree 36d5bd80948032b2f7096e43e47cc08d322a37a5	arm64asm
040000 tree b5707e6d0048638962ac235ee3d9c11b90c8b2c6	arm64gen
040000 tree f348336580cbf486f52fc7034717a0768bc35283	arm64spec
040000 tree 7c0660f4db842910e42184780fbcc36c0fdf16d1	instgen