st/mesa: fix incorrect loop over instruction src regs

The array of src regs is of size 3, not 4.
2011-08-16 16:30:52 -06:00 · 2011-08-16 16:30:52 -06:00 · 718b894dbb
parent 65bdb878a0
commit 718b894dbb
1 changed files with 1 additions and 1 deletions
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@ -3443,7 +3443,7 @@ glsl_to_tgsi_visitor::eliminate_dead_code_advanced(void)
         /* Continuing the block, clear any channels from the write array that
          * are read by this instruction.
          */
-         for (int i = 0; i < 4; i++) {
+         for (unsigned i = 0; i < Elements(inst->src); i++) {
            if (inst->src[i].file == PROGRAM_TEMPORARY && inst->src[i].reladdr){
               /* Any temporary might be read, so no dead code elimination 
                * across this instruction.