diff options
Diffstat (limited to 'llvm/lib/CodeGen/TargetLoweringBase.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/TargetLoweringBase.cpp | 106 |
1 files changed, 73 insertions, 33 deletions
diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp index 85b148a..0a077b7 100644 --- a/llvm/lib/CodeGen/TargetLoweringBase.cpp +++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp @@ -609,37 +609,79 @@ RTLIB::Libcall RTLIB::getMEMSET_ELEMENT_UNORDERED_ATOMIC(uint64_t ElementSize) { } } -void RTLIB::initCmpLibcallCCs(ISD::CondCode *CmpLibcallCCs) { - std::fill(CmpLibcallCCs, CmpLibcallCCs + RTLIB::UNKNOWN_LIBCALL, - ISD::SETCC_INVALID); - CmpLibcallCCs[RTLIB::OEQ_F32] = ISD::SETEQ; - CmpLibcallCCs[RTLIB::OEQ_F64] = ISD::SETEQ; - CmpLibcallCCs[RTLIB::OEQ_F128] = ISD::SETEQ; - CmpLibcallCCs[RTLIB::OEQ_PPCF128] = ISD::SETEQ; - CmpLibcallCCs[RTLIB::UNE_F32] = ISD::SETNE; - CmpLibcallCCs[RTLIB::UNE_F64] = ISD::SETNE; - CmpLibcallCCs[RTLIB::UNE_F128] = ISD::SETNE; - CmpLibcallCCs[RTLIB::UNE_PPCF128] = ISD::SETNE; - CmpLibcallCCs[RTLIB::OGE_F32] = ISD::SETGE; - CmpLibcallCCs[RTLIB::OGE_F64] = ISD::SETGE; - CmpLibcallCCs[RTLIB::OGE_F128] = ISD::SETGE; - CmpLibcallCCs[RTLIB::OGE_PPCF128] = ISD::SETGE; - CmpLibcallCCs[RTLIB::OLT_F32] = ISD::SETLT; - CmpLibcallCCs[RTLIB::OLT_F64] = ISD::SETLT; - CmpLibcallCCs[RTLIB::OLT_F128] = ISD::SETLT; - CmpLibcallCCs[RTLIB::OLT_PPCF128] = ISD::SETLT; - CmpLibcallCCs[RTLIB::OLE_F32] = ISD::SETLE; - CmpLibcallCCs[RTLIB::OLE_F64] = ISD::SETLE; - CmpLibcallCCs[RTLIB::OLE_F128] = ISD::SETLE; - CmpLibcallCCs[RTLIB::OLE_PPCF128] = ISD::SETLE; - CmpLibcallCCs[RTLIB::OGT_F32] = ISD::SETGT; - CmpLibcallCCs[RTLIB::OGT_F64] = ISD::SETGT; - CmpLibcallCCs[RTLIB::OGT_F128] = ISD::SETGT; - CmpLibcallCCs[RTLIB::OGT_PPCF128] = ISD::SETGT; - CmpLibcallCCs[RTLIB::UO_F32] = ISD::SETNE; - CmpLibcallCCs[RTLIB::UO_F64] = ISD::SETNE; - CmpLibcallCCs[RTLIB::UO_F128] = ISD::SETNE; - CmpLibcallCCs[RTLIB::UO_PPCF128] = ISD::SETNE; +ISD::CondCode TargetLoweringBase::getSoftFloatCmpLibcallPredicate( + RTLIB::LibcallImpl Impl) const { + switch (Impl) { + case RTLIB::__aeabi_dcmpeq__une: + case RTLIB::__aeabi_fcmpeq__une: + // Usage in the eq case, so we have to invert the comparison. + return ISD::SETEQ; + case RTLIB::__aeabi_dcmpeq__oeq: + case RTLIB::__aeabi_fcmpeq__oeq: + // Normal comparison to boolean value. + return ISD::SETNE; + case RTLIB::__aeabi_dcmplt: + case RTLIB::__aeabi_dcmple: + case RTLIB::__aeabi_dcmpge: + case RTLIB::__aeabi_dcmpgt: + case RTLIB::__aeabi_dcmpun: + case RTLIB::__aeabi_fcmplt: + case RTLIB::__aeabi_fcmple: + case RTLIB::__aeabi_fcmpge: + case RTLIB::__aeabi_fcmpgt: + /// The AEABI versions return a typical boolean value, so we can compare + /// against the integer result as simply != 0. + return ISD::SETNE; + default: + break; + } + + // Assume libgcc/compiler-rt behavior. Most of the cases are really aliases of + // each other, and return a 3-way comparison style result of -1, 0, or 1 + // depending on lt/eq/gt. + // + // FIXME: It would be cleaner to directly express this as a 3-way comparison + // soft FP libcall instead of individual compares. + RTLIB::Libcall LC = RTLIB::RuntimeLibcallsInfo::getLibcallFromImpl(Impl); + switch (LC) { + case RTLIB::OEQ_F32: + case RTLIB::OEQ_F64: + case RTLIB::OEQ_F128: + case RTLIB::OEQ_PPCF128: + return ISD::SETEQ; + case RTLIB::UNE_F32: + case RTLIB::UNE_F64: + case RTLIB::UNE_F128: + case RTLIB::UNE_PPCF128: + return ISD::SETNE; + case RTLIB::OGE_F32: + case RTLIB::OGE_F64: + case RTLIB::OGE_F128: + case RTLIB::OGE_PPCF128: + return ISD::SETGE; + case RTLIB::OLT_F32: + case RTLIB::OLT_F64: + case RTLIB::OLT_F128: + case RTLIB::OLT_PPCF128: + return ISD::SETLT; + case RTLIB::OLE_F32: + case RTLIB::OLE_F64: + case RTLIB::OLE_F128: + case RTLIB::OLE_PPCF128: + return ISD::SETLE; + case RTLIB::OGT_F32: + case RTLIB::OGT_F64: + case RTLIB::OGT_F128: + case RTLIB::OGT_PPCF128: + return ISD::SETGT; + case RTLIB::UO_F32: + case RTLIB::UO_F64: + case RTLIB::UO_F128: + case RTLIB::UO_PPCF128: + return ISD::SETNE; + default: + llvm_unreachable("not a compare libcall"); + } } /// NOTE: The TargetMachine owns TLOF. @@ -678,8 +720,6 @@ TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm) MinCmpXchgSizeInBits = 0; SupportsUnalignedAtomics = false; - - RTLIB::initCmpLibcallCCs(CmpLibcallCCs); } // Define the virtual destructor out-of-line to act as a key method to anchor |