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R600/SI: Use source scheduler 

This is certainly not the last word on scheduling for this target, but
right now this allows a few apps to run / finish with radeonsi, most
notably UT2004 / Lightsmark. They fail to compile some shaders with the
default scheduler because it ends up trying to spill registers, which
we don't support yet (and which is probably a bad idea in general for
performance if it can be avoided).

NOTE: This is a candidate for the Mesa stable branch.

Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
llvm-svn: 176687
This commit is contained in:
Michel Danzer 2013-03-08 10:58:01 +00:00
parent aba589cceb
commit f52a672bf5
1 changed files with 2 additions and 0 deletions
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2
llvm/lib/Target/R600/SIISelLowering.cpp
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@ -68,6 +68,8 @@ SITargetLowering::SITargetLowering(TargetMachine &TM) :
setTargetDAGCombine(ISD::SELECT_CC); setTargetDAGCombine(ISD::SELECT_CC);
setTargetDAGCombine(ISD::SETCC); setTargetDAGCombine(ISD::SETCC);
setSchedulingPreference(Sched::Source);
} }
SDValue SITargetLowering::LowerFormalArguments( SDValue SITargetLowering::LowerFormalArguments(