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r300/compiler: Fix loop unrolling

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This commit is contained in:
Tom Stellard 2010-06-24 18:45:46 -07:00 • committed by Marek Olšák
parent f381c52081
commit 7da9e1e61b
1 changed files with 15 additions and 1 deletions
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16
src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c
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@ -267,8 +267,22 @@ static int transform_const_loop(struct emulate_loop_state * s,
* simple, since we only support increment and decrement loops.
*/
limit_value = get_constant_value(s->C, limit, 0);
iterations = (int) ((limit_value - counter_value.Value) /
DBG("Limit is %f.\n", limit_value);
switch(loop->Cond->U.I.Opcode){
case RC_OPCODE_SGT:
case RC_OPCODE_SLT:
iterations = (int) ceilf((limit_value - counter_value.Value) /
count_inst.Amount);
break;
case RC_OPCODE_SLE:
case RC_OPCODE_SGE:
iterations = (int) floorf((limit_value - counter_value.Value) /
count_inst.Amount) + 1;
break;
default:
return 0;
}
DBG("Loop will have %d iterations.\n", iterations);