diff options
| author | Hal Finkel <hfinkel@anl.gov> | 2013-03-29 08:57:48 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2013-03-29 08:57:48 +0000 |
| commit | f5d5c434606161fb017a34cb656fa4aa5a3e076b (patch) | |
| tree | 4641a3e130c65183f13495d0228b9454e7bf7b60 /lib/Target/PowerPC/PPCISelLowering.cpp | |
| parent | ef484a376cce3729b45ad86eab5724aa83a61823 (diff) | |
Add PPC FP rounding instructions fri[mnpz]
These instructions are available on the P5x (and later) and on the A2. They
implement the standard floating-point rounding operations (floor, trunc, etc.).
One caveat: frin (round to nearest) does not implement "ties to even", and so
is only enabled in fast-math mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178337 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCISelLowering.cpp')
| -rw-r--r-- | lib/Target/PowerPC/PPCISelLowering.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp index 74e811b35c..84af0bbb31 100644 --- a/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/lib/Target/PowerPC/PPCISelLowering.cpp @@ -158,6 +158,23 @@ PPCTargetLowering::PPCTargetLowering(PPCTargetMachine &TM) setOperationAction(ISD::FCOPYSIGN, MVT::f64, Expand); setOperationAction(ISD::FCOPYSIGN, MVT::f32, Expand); + if (Subtarget->hasFPRND()) { + setOperationAction(ISD::FFLOOR, MVT::f64, Legal); + setOperationAction(ISD::FCEIL, MVT::f64, Legal); + setOperationAction(ISD::FTRUNC, MVT::f64, Legal); + + setOperationAction(ISD::FFLOOR, MVT::f32, Legal); + setOperationAction(ISD::FCEIL, MVT::f32, Legal); + setOperationAction(ISD::FTRUNC, MVT::f32, Legal); + + // frin does not implement "ties to even." Thus, this is safe only in + // fast-math mode. + if (TM.Options.UnsafeFPMath) { + setOperationAction(ISD::FNEARBYINT, MVT::f64, Legal); + setOperationAction(ISD::FNEARBYINT, MVT::f32, Legal); + } + } + // PowerPC does not have BSWAP, CTPOP or CTTZ setOperationAction(ISD::BSWAP, MVT::i32 , Expand); setOperationAction(ISD::CTTZ , MVT::i32 , Expand); |