diff options
Diffstat (limited to 'lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 8567ca47b7..d80b8ec66e 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -975,6 +975,19 @@ X86TargetLowering::X86TargetLowering(X86TargetMachine &TM) computeRegisterProperties(); + // Divide and reminder operations have no vector equivalent and can + // trap. Do a custom widening for these operations in which we never + // generate more divides/remainder than the original vector width. + for (unsigned VT = (unsigned)MVT::FIRST_VECTOR_VALUETYPE; + VT <= (unsigned)MVT::LAST_VECTOR_VALUETYPE; ++VT) { + if (!isTypeLegal((MVT::SimpleValueType)VT)) { + setOperationAction(ISD::SDIV, (MVT::SimpleValueType) VT, Custom); + setOperationAction(ISD::UDIV, (MVT::SimpleValueType) VT, Custom); + setOperationAction(ISD::SREM, (MVT::SimpleValueType) VT, Custom); + setOperationAction(ISD::UREM, (MVT::SimpleValueType) VT, Custom); + } + } + // FIXME: These should be based on subtarget info. Plus, the values should // be smaller when we are in optimizing for size mode. maxStoresPerMemset = 16; // For @llvm.memset -> sequence of stores @@ -7170,6 +7183,14 @@ void X86TargetLowering::ReplaceNodeResults(SDNode *N, Results.push_back(edx.getValue(1)); return; } + case ISD::SDIV: + case ISD::UDIV: + case ISD::SREM: + case ISD::UREM: { + EVT WidenVT = getTypeToTransformTo(*DAG.getContext(), N->getValueType(0)); + Results.push_back(DAG.UnrollVectorOp(N, WidenVT.getVectorNumElements())); + return; + } case ISD::ATOMIC_CMP_SWAP: { EVT T = N->getValueType(0); assert (T == MVT::i64 && "Only know how to expand i64 Cmp and Swap"); |