diff options
| author | Marek Olšák <maraeo@gmail.com> | 2011-03-08 06:37:50 +0100 |
|---|---|---|
| committer | Marek Olšák <maraeo@gmail.com> | 2011-03-08 06:37:50 +0100 |
| commit | 4f3826117957b5ac1554b833af33d342360f655a (patch) | |
| tree | 89d830654f5ecbd3274df306b5c85f869dabe57d /src/mesa/drivers | |
| parent | eb1acd16130a2945122d373357ee72585e520755 (diff) | |
r300/compiler: improve the detection of constants for constant folding
Now the expression V==0 generates one instruction instead of two.
Diffstat (limited to 'src/mesa/drivers')
| -rw-r--r-- | src/mesa/drivers/dri/r300/compiler/radeon_optimize.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c b/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c index 5caff91b00..3915cb475b 100644 --- a/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c +++ b/src/mesa/drivers/dri/r300/compiler/radeon_optimize.c @@ -312,6 +312,13 @@ static void constant_folding(struct radeon_compiler * c, struct rc_instruction * struct rc_src_register newsrc; int have_real_reference; + if (inst->U.I.SrcReg[src].Swizzle == RC_SWIZZLE_1111 || + inst->U.I.SrcReg[src].Swizzle == RC_SWIZZLE_0000 || + inst->U.I.SrcReg[src].Swizzle == RC_SWIZZLE_HHHH) { + inst->U.I.SrcReg[src].File = RC_FILE_NONE; + continue; + } + if (inst->U.I.SrcReg[src].File != RC_FILE_CONSTANT || inst->U.I.SrcReg[src].RelAddr || inst->U.I.SrcReg[src].Index >= c->Program.Constants.Count) |