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r300/compiler: Don't unroll loops with continue or break.

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This commit is contained in:
Tom Stellard 2010-07-12 13:14:38 -07:00
parent a3ff6c2697
commit 680f486ffd
1 changed files with 12 additions and 1 deletions
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13
src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c
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@ -191,7 +191,7 @@ static void get_incr_amount(void * data, struct rc_instruction * inst,
static int transform_const_loop(struct emulate_loop_state * s,
struct loop_info * loop)
{
int end_loops = 1;
int end_loops;
int iterations;
struct count_inst count_inst;
float limit_value;
@ -235,6 +235,7 @@ static int transform_const_loop(struct emulate_loop_state * s,
count_inst.Swz = counter->Swizzle;
count_inst.Amount = 0.0f;
count_inst.Unknown = 0;
end_loops = 1;
for(inst = loop->BeginLoop->Next; end_loops > 0; inst = inst->Next){
switch(inst->U.I.Opcode){
/* XXX In the future we might want to try to unroll nested
@ -246,6 +247,16 @@ static int transform_const_loop(struct emulate_loop_state * s,
loop->EndLoop = inst;
end_loops--;
break;
case RC_OPCODE_BRK:
/* Don't unroll loops if it has a BRK instruction
* other one used when testing the main conditional
* of the loop. */
/* Make sure we haven't entered a nested loops. */
if(inst != loop->Brk && end_loops == 1) {
return 0;
}
break;
/* XXX Check if the counter is modified within an if statement.
*/
case RC_OPCODE_IF: