diff options
| author | Tom Stellard <tstellar@gmail.com> | 2010-07-12 13:14:38 -0700 |
|---|---|---|
| committer | Tom Stellard <tstellar@gmail.com> | 2010-08-03 19:11:08 -0700 |
| commit | 680f486ffd4aab8b9354f1b5a035b3881ac2310c (patch) | |
| tree | d4fb5b993d6141c2a5fcd83cc03d7278cb010c3b /src | |
| parent | a3ff6c269729597dd1318df2a10fb2a7dba093d6 (diff) | |
r300/compiler: Don't unroll loops with continue or break.
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c index 131e9e7436..fed4d8829a 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_emulate_loops.c @@ -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: |