diff options
Diffstat (limited to 'llvm/lib/Target/Mips/Mips32r6InstrInfo.td')
| -rw-r--r-- | llvm/lib/Target/Mips/Mips32r6InstrInfo.td | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/llvm/lib/Target/Mips/Mips32r6InstrInfo.td b/llvm/lib/Target/Mips/Mips32r6InstrInfo.td index 91ffbc4eb77d..27b9ce60ba82 100644 --- a/llvm/lib/Target/Mips/Mips32r6InstrInfo.td +++ b/llvm/lib/Target/Mips/Mips32r6InstrInfo.td @@ -1139,6 +1139,43 @@ let AdditionalPredicates = [NotInMicroMips] in { ISA_MIPS32R6; } +// llvm.is_fpclass operations. +def to_fclass_mask: SDNodeXForm<imm, [{ + unsigned Check = N->getZExtValue(); + unsigned Mask = 0; + if (Check & fcSNan) + Mask |= Mips::FClassMaskSignalingNaN; + if (Check & fcQNan) + Mask |= Mips::FClassMaskQuietNaN; + if (Check & fcPosInf) + Mask |= Mips::FClassMaskPositiveInfinity; + if (Check & fcNegInf) + Mask |= Mips::FClassMaskNegativeInfinity; + if (Check & fcPosNormal) + Mask |= Mips::FClassMaskPositiveNormal; + if (Check & fcNegNormal) + Mask |= Mips::FClassMaskNegativeNormal; + if (Check & fcPosSubnormal) + Mask |= Mips::FClassMaskPositiveSubnormal; + if (Check & fcNegSubnormal) + Mask |= Mips::FClassMaskNegativeSubnormal; + if (Check & fcPosZero) + Mask |= Mips::FClassMaskPositiveZero; + if (Check & fcNegZero) + Mask |= Mips::FClassMaskNegativeZero; + return CurDAG->getTargetConstant(Mask, SDLoc(N), MVT::i32); +}]>; +let AdditionalPredicates = [NotInMicroMips] in { + def : MipsPat<(is_fpclass f32:$lhs, i32:$imm), + (SLTu ZERO, (ANDi (MFC1 (CLASS_S f32:$lhs)), + (to_fclass_mask imm:$imm)))>, + ISA_MIPS32R6; + def : MipsPat<(is_fpclass f64:$lhs, i32:$imm), + (SLTu ZERO, (ANDi (MFC1_D64 (CLASS_D f64:$lhs)), + (to_fclass_mask imm:$imm)))>, + ISA_MIPS32R6; +} + // Pseudo instructions let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1, hasDelaySlot = 1, hasExtraSrcRegAllocReq = 1, isCTI = 1, Defs = [AT], hasPostISelHook = 1 in { |