+ /* fall-through */
+ case TGSI_OPCODE_NRM4:
+ /* 3 or 4-component normalization */
+ {
+ uint dims = (inst->Instruction.Opcode == TGSI_OPCODE_NRM) ? 3 : 4;
+
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_X) ||
+ IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Y) ||
+ IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Z) ||
+ (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_W) && dims == 4)) {
+
+ /* NOTE: Cannot use xmm regs 2/3 here (see emit_rsqrt() above). */
+
+ /* xmm4 = src.x */
+ /* xmm0 = src.x * src.x */
+ FETCH(func, *inst, 0, 0, CHAN_X);
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_X)) {
+ emit_MOV(func, 4, 0);
+ }
+ emit_mul(func, 0, 0);
+
+ /* xmm5 = src.y */
+ /* xmm0 = xmm0 + src.y * src.y */
+ FETCH(func, *inst, 1, 0, CHAN_Y);
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Y)) {
+ emit_MOV(func, 5, 1);
+ }
+ emit_mul(func, 1, 1);
+ emit_add(func, 0, 1);
+
+ /* xmm6 = src.z */
+ /* xmm0 = xmm0 + src.z * src.z */
+ FETCH(func, *inst, 1, 0, CHAN_Z);
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Z)) {
+ emit_MOV(func, 6, 1);
+ }
+ emit_mul(func, 1, 1);
+ emit_add(func, 0, 1);
+
+ if (dims == 4) {
+ /* xmm7 = src.w */
+ /* xmm0 = xmm0 + src.w * src.w */
+ FETCH(func, *inst, 1, 0, CHAN_W);
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_W)) {
+ emit_MOV(func, 7, 1);
+ }
+ emit_mul(func, 1, 1);
+ emit_add(func, 0, 1);
+ }
+
+ /* xmm1 = 1 / sqrt(xmm0) */
+ emit_rsqrt(func, 1, 0);
+
+ /* dst.x = xmm1 * src.x */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_X)) {
+ emit_mul(func, 4, 1);
+ STORE(func, *inst, 4, 0, CHAN_X);
+ }
+
+ /* dst.y = xmm1 * src.y */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Y)) {
+ emit_mul(func, 5, 1);
+ STORE(func, *inst, 5, 0, CHAN_Y);
+ }
+
+ /* dst.z = xmm1 * src.z */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_Z)) {
+ emit_mul(func, 6, 1);
+ STORE(func, *inst, 6, 0, CHAN_Z);
+ }
+
+ /* dst.w = xmm1 * src.w */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_X) && dims == 4) {
+ emit_mul(func, 7, 1);
+ STORE(func, *inst, 7, 0, CHAN_W);
+ }
+ }
+
+ /* dst0.w = 1.0 */
+ if (IS_DST0_CHANNEL_ENABLED(*inst, CHAN_W) && dims == 3) {
+ emit_tempf(func, 0, TEMP_ONE_I, TEMP_ONE_C);
+ STORE(func, *inst, 0, 0, CHAN_W);
+ }
+ }