- for (int i = 0; i < qir_get_op_nsrc(inst->op); i++) {
- int index = inst->src[i].index;
- if (inst->src[i].file == QFILE_TEMP &&
- c->defs[index] &&
- c->defs[index]->op == QOP_MOV &&
- (c->defs[index]->src[0].file == QFILE_TEMP ||
- c->defs[index]->src[0].file == QFILE_UNIF)) {
- /* If it has a pack, it shouldn't be an SSA
- * def.
+ int nsrc = qir_get_op_nsrc(inst->op);
+ for (int i = 0; i < nsrc; i++) {
+ if (inst->src[i].file != QFILE_TEMP)
+ continue;
+
+ struct qinst *mov = c->defs[inst->src[i].index];
+ if (!mov ||
+ (mov->op != QOP_MOV &&
+ mov->op != QOP_FMOV &&
+ mov->op != QOP_MMOV)) {
+ continue;
+ }
+
+ if (mov->src[0].file != QFILE_TEMP &&
+ mov->src[0].file != QFILE_UNIF) {
+ continue;
+ }
+
+ if (mov->dst.pack)
+ continue;
+
+ uint8_t unpack;
+ if (mov->src[0].pack) {
+ /* Make sure that the meaning of the unpack
+ * would be the same between the two
+ * instructions.