+
+#ifdef DEBUG
+static void
+check_inf_or_nan(const union tgsi_exec_channel *chan)
+{
+ assert(!util_is_inf_or_nan(chan->f[0]));
+ assert(!util_is_inf_or_nan(chan->f[1]));
+ assert(!util_is_inf_or_nan(chan->f[2]));
+ assert(!util_is_inf_or_nan(chan->f[3]));
+}
+#endif
+
+
+#ifdef DEBUG
+static void
+print_chan(const char *msg, const union tgsi_exec_channel *chan)
+{
+ debug_printf("%s = {%f, %f, %f, %f}\n",
+ msg, chan->f[0], chan->f[1], chan->f[2], chan->f[3]);
+}
+#endif
+
+
+#ifdef DEBUG
+static void
+print_temp(const struct tgsi_exec_machine *mach, uint index)
+{
+ const struct tgsi_exec_vector *tmp = &mach->Temps[index];
+ int i;
+ debug_printf("Temp[%u] =\n", index);
+ for (i = 0; i < 4; i++) {
+ debug_printf(" %c: { %f, %f, %f, %f }\n",
+ "XYZW"[i],
+ tmp->xyzw[i].f[0],
+ tmp->xyzw[i].f[1],
+ tmp->xyzw[i].f[2],
+ tmp->xyzw[i].f[3]);
+ }
+}
+#endif
+
+
+/**
+ * Check if there's a potential src/dst register data dependency when
+ * using SOA execution.
+ * Example:
+ * MOV T, T.yxwz;
+ * This would expand into:
+ * MOV t0, t1;
+ * MOV t1, t0;
+ * MOV t2, t3;
+ * MOV t3, t2;
+ * The second instruction will have the wrong value for t0 if executed as-is.
+ */
+static boolean
+tgsi_check_soa_dependencies(const struct tgsi_full_instruction *inst)
+{
+ uint i, chan;
+
+ uint writemask = inst->FullDstRegisters[0].DstRegister.WriteMask;
+ if (writemask == TGSI_WRITEMASK_X ||
+ writemask == TGSI_WRITEMASK_Y ||
+ writemask == TGSI_WRITEMASK_Z ||
+ writemask == TGSI_WRITEMASK_W ||
+ writemask == TGSI_WRITEMASK_NONE) {
+ /* no chance of data dependency */
+ return FALSE;
+ }
+
+ /* loop over src regs */
+ for (i = 0; i < inst->Instruction.NumSrcRegs; i++) {
+ if ((inst->FullSrcRegisters[i].SrcRegister.File ==
+ inst->FullDstRegisters[0].DstRegister.File) &&
+ (inst->FullSrcRegisters[i].SrcRegister.Index ==
+ inst->FullDstRegisters[0].DstRegister.Index)) {
+ /* loop over dest channels */
+ uint channelsWritten = 0x0;
+ FOR_EACH_ENABLED_CHANNEL(*inst, chan) {
+ /* check if we're reading a channel that's been written */
+ uint swizzle = tgsi_util_get_full_src_register_extswizzle(&inst->FullSrcRegisters[i], chan);
+ if (swizzle <= TGSI_SWIZZLE_W &&
+ (channelsWritten & (1 << swizzle))) {
+ return TRUE;
+ }
+
+ channelsWritten |= (1 << chan);
+ }
+ }
+ }
+ return FALSE;
+}
+
+