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R600/SI: Use source scheduler

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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>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176687 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michel Danzer 2013-03-08 10:58:01 +00:00
parent fff2d3aed9
commit d787c047bc
1 changed files with 2 additions and 0 deletions
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lib/Target/R600/SIISelLowering.cpp
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@ -68,6 +68,8 @@ SITargetLowering::SITargetLowering(TargetMachine &TM) :
setTargetDAGCombine(ISD::SELECT_CC);
setTargetDAGCombine(ISD::SETCC);
setSchedulingPreference(Sched::Source);
}
SDValue SITargetLowering::LowerFormalArguments(