diff options
Diffstat (limited to 'contrib/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp')
| -rw-r--r-- | contrib/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/contrib/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp b/contrib/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp index 012ff8a..4a99184 100644 --- a/contrib/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp +++ b/contrib/llvm/lib/CodeGen/BasicTargetTransformInfo.cpp @@ -204,20 +204,25 @@ unsigned BasicTTI::getArithmeticInstrCost(unsigned Opcode, Type *Ty, std::pair<unsigned, MVT> LT = TLI->getTypeLegalizationCost(Ty); + bool IsFloat = Ty->getScalarType()->isFloatingPointTy(); + // Assume that floating point arithmetic operations cost twice as much as + // integer operations. + unsigned OpCost = (IsFloat ? 2 : 1); + if (TLI->isOperationLegalOrPromote(ISD, LT.second)) { // The operation is legal. Assume it costs 1. - // If the type is split to multiple registers, assume that thre is some + // If the type is split to multiple registers, assume that there is some // overhead to this. // TODO: Once we have extract/insert subvector cost we need to use them. if (LT.first > 1) - return LT.first * 2; - return LT.first * 1; + return LT.first * 2 * OpCost; + return LT.first * 1 * OpCost; } if (!TLI->isOperationExpand(ISD, LT.second)) { // If the operation is custom lowered then assume // thare the code is twice as expensive. - return LT.first * 2; + return LT.first * 2 * OpCost; } // Else, assume that we need to scalarize this op. @@ -230,7 +235,7 @@ unsigned BasicTTI::getArithmeticInstrCost(unsigned Opcode, Type *Ty, } // We don't know anything about this scalar instruction. - return 1; + return OpCost; } unsigned BasicTTI::getShuffleCost(ShuffleKind Kind, Type *Tp, int Index, |
