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R600/SI: Use V_FRACT_F64 for faster 64-bit floor on SI

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Other f64 opcodes not supported on SI can be lowered in a similar way.

v2: use complex VOP3 patterns

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233076 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Marek Olsak
2015-03-24 13:40:15 +00:00
parent 91c066ae15
commit 3f05a5e0ad
6 changed files with 175 additions and 22 deletions
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2
lib/Target/R600/SIISelLowering.cpp
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@@ -202,10 +202,10 @@ SITargetLowering::SITargetLowering(TargetMachine &TM,
if (Subtarget->getGeneration() >= AMDGPUSubtarget::SEA_ISLANDS) {
setOperationAction(ISD::FTRUNC, MVT::f64, Legal);
setOperationAction(ISD::FCEIL, MVT::f64, Legal);
setOperationAction(ISD::FFLOOR, MVT::f64, Legal);
setOperationAction(ISD::FRINT, MVT::f64, Legal);
}
setOperationAction(ISD::FFLOOR, MVT::f64, Legal);
setOperationAction(ISD::FDIV, MVT::f32, Custom);
setOperationAction(ISD::FDIV, MVT::f64, Custom);