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glsl_to_tgsi: remove a bad assertion

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It was triggered by Alien Arena.
This commit is contained in:
Bryan Cain 2011-04-30 13:44:32 -05:00
parent c341d3cfd0
commit 556bd82ce1
1 changed files with 5 additions and 4 deletions
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9
src/mesa/state_tracker/st_glsl_to_tgsi.cpp
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@ -3077,11 +3077,11 @@ glsl_to_tgsi_visitor::merge_registers(void)
/* Start looking for registers with non-overlapping usages that can be
* merged together. */
for (i=0; i < this->next_temp - 1; i++) {
for (i=0; i < this->next_temp; i++) {
/* Don't touch unused registers. */
if (last_reads[i] < 0 || first_writes[i] < 0) continue;
for (j=i+1; j < this->next_temp; j++) {
for (j=0; j < this->next_temp; j++) {
/* Don't touch unused registers. */
if (last_reads[j] < 0 || first_writes[j] < 0) continue;
@ -3089,8 +3089,9 @@ glsl_to_tgsi_visitor::merge_registers(void)
* in the same instruction as the last read from i. Note that the
* register at index i will always be used earlier or at the same time
* as the register at index j. */
assert(first_writes[i] <= first_writes[j]);
if (last_reads[i] <= first_writes[j]) {
if (first_writes[i] <= first_writes[j] &&
last_reads[i] <= first_writes[j])
{
rename_temp_register(j, i); /* Replace all references to j with i.*/
/* Update the first_writes and last_reads arrays with the new