Note, this version is for intrinsics with no overloads. References getUser(), and llvm::User::op_begin(). From the user's perspective, the code looks only slightly different, because one uses an import declaration rather than a #include preprocessor directive: Not the answer you're looking for? Find centralized, trusted content and collaborate around the technologies you use most. To do this, copy the following into CMakeLists.txt: Return the IIT table descriptor for the specified intrinsic into an array of IITDescriptors. Connect and share knowledge within a single location that is structured and easy to search. function will interoperate properly with C code, which is a good thing. I just realized that the functions changed their orders when I ran the code again. Entry count is the number of times the function was executed. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Making location easier for developers with new data primitives, Stop requiring only one assertion per unit test: Multiple assertions are fine, Mobile app infrastructure being decommissioned. Return the LLVM name for an intrinsic, without encoded types for overloading, such as "llvm.ssa.copy". Referenced by AddNodeIDCustom(), llvm::SITargetLowering::computeKnownAlignForTargetInstr(), llvm::MCPseudoProbe::emit(), llvm::SITargetLowering::getTgtMemIntrinsic(), stripNonValidAttributesFromPrototype(), and llvm::UpgradeIntrinsicFunction(). trivial pass that prints out our module in textual form. The only way is to have InlineAsm function created at the place of call. Referenced by llvm::AsmPrinter::emitCFIInstruction (), and llvm::X86FrameLowering::mergeSPUpdates (). For this example, were just using a You'll notice that getOrInsertFunction() doesn't actually return a Function*. A Use represents the edge between a Value definition and its users.. What is the function of in ? References llvm::ArrayRef< T >::empty(), getName(), getType(), and M. Referenced by addAssumeNonNull(), addBoundsChecking(), callIntrinsic(), convertToRelLookupTable(), llvm::IRBuilderBase::CreateAssumption(), llvm::IRBuilderBase::CreateBinaryIntrinsic(), llvm::MatrixBuilder::CreateColumnMajorLoad(), llvm::MatrixBuilder::CreateColumnMajorStore(), createCoroSave(), llvm::IRBuilderBase::CreateElementUnorderedAtomicMemCpy(), llvm::IRBuilderBase::CreateElementUnorderedAtomicMemMove(), llvm::IRBuilderBase::CreateElementUnorderedAtomicMemSet(), llvm::IRBuilderBase::CreateFAddReduce(), createFFSIntrinsic(), llvm::IRBuilderBase::CreateFMulReduce(), llvm::IRBuilderBase::CreateGCGetPointerBase(), llvm::IRBuilderBase::CreateGCGetPointerOffset(), llvm::IRBuilderBase::CreateGCRelocate(), CreateGCRelocates(), llvm::IRBuilderBase::CreateGCResult(), CreateGCStatepointCallCommon(), CreateGCStatepointInvokeCommon(), llvm::IRBuilderBase::CreateIntrinsic(), llvm::IRBuilderBase::CreateInvariantStart(), llvm::IRBuilderBase::CreateLaunderInvariantGroup(), llvm::IRBuilderBase::CreateLifetimeEnd(), llvm::IRBuilderBase::CreateLifetimeStart(), llvm::MatrixBuilder::CreateMatrixMultiply(), llvm::MatrixBuilder::CreateMatrixTranspose(), llvm::IRBuilderBase::CreateMemCpyInline(), llvm::IRBuilderBase::CreateMemMove(), llvm::IRBuilderBase::CreateMemSet(), llvm::IRBuilderBase::CreateMemSetInline(), llvm::IRBuilderBase::CreateMemTransferInst(), llvm::IRBuilderBase::CreateNoAliasScopeDeclaration(), createPopcntIntrinsic(), createPowWithIntegerExponent(), llvm::IRBuilderBase::CreatePreserveArrayAccessIndex(), llvm::IRBuilderBase::CreatePreserveStructAccessIndex(), llvm::IRBuilderBase::CreatePreserveUnionAccessIndex(), CreatePrologue(), llvm::IRBuilderBase::CreateStripInvariantGroup(), createTblForTrunc(), llvm::IRBuilderBase::CreateUnaryIntrinsic(), llvm::IRBuilderBase::CreateVectorReverse(), llvm::IRBuilderBase::CreateVectorSplice(), llvm::IRBuilderBase::CreateVScale(), llvm::ARMTargetLowering::emitAtomicCmpXchgNoStoreLLBalance(), llvm::AArch64TargetLowering::emitAtomicCmpXchgNoStoreLLBalance(), llvm::HexagonTargetLowering::emitLoadLinked(), llvm::ARMTargetLowering::emitLoadLinked(), llvm::AArch64TargetLowering::emitLoadLinked(), llvm::LoongArchTargetLowering::emitMaskedAtomicCmpXchgIntrinsic(), llvm::RISCVTargetLowering::emitMaskedAtomicCmpXchgIntrinsic(), llvm::PPCTargetLowering::emitMaskedAtomicCmpXchgIntrinsic(), llvm::LoongArchTargetLowering::emitMaskedAtomicRMWIntrinsic(), llvm::RISCVTargetLowering::emitMaskedAtomicRMWIntrinsic(), llvm::PPCTargetLowering::emitMaskedAtomicRMWIntrinsic(), llvm::HexagonTargetLowering::emitStoreConditional(), llvm::ARMTargetLowering::emitStoreConditional(), llvm::AArch64TargetLowering::emitStoreConditional(), emitTPIDR2Save(), llvm::PPCTargetLowering::emitTrailingFence(), llvm::VPWidenCallRecipe::execute(), explicifyGuards(), factorizeMinMaxTree(), foldCtpop(), foldCttzCtlz(), foldGuardedFunnelShift(), llvm::InstCombinerImpl::foldMultiplicationOverflowCheck(), foldSqrt(), foldSubOfMinMax(), foldToUnsignedSaturatedAdd(), llvm::SCEVExpander::generateOverflowCheck(), generateUnsignedDivisionCode(), llvm::VPIntrinsic::getDeclarationForParams(), getDeclareIntrin(), getScalarIntrinsicDeclaration(), getSqrtCall(), getStackGuard(), llvm::InlineFunction(), inlineRetainOrClaimRVCalls(), insertCall(), insertLifetimeMarkersSurroundingCall(), llvm::BPFCoreSharedInfo::insertPassThrough(), llvm::GCNTTIImpl::instCombineIntrinsic(), llvm::SampleProfileProber::instrumentOneFunc(), instrumentOneFunc(), LLVMGetIntrinsicDeclaration(), lowerGuardIntrinsic(), llvm::AArch64TargetLowering::lowerInterleavedLoad(), llvm::ARMTargetLowering::lowerInterleavedLoad(), llvm::AArch64TargetLowering::lowerInterleavedStore(), llvm::ARMTargetLowering::lowerInterleavedStore(), lowerLocalAllocas(), llvm::IntrinsicLowering::LowerToByteSwap(), llvm::ARMTargetLowering::makeDMB(), llvm::coro::LowererBase::makeSubFnCall(), matchFunnelShift(), matchOrConcat(), modifyIntrinsicCall(), optimizeDoubleFP(), optimizeWithFDivFast(), optimizeWithRcp(), processUGT_ADDCST_ADD(), processUMulZExtIdiom(), reassociateMinMaxWithConstantInOperand(), reassociateMinMaxWithConstants(), llvm::recognizeBSwapOrBitReverseIdiom(), remangleIntrinsicFunction(), RemovePreallocated(), replaceUnaryCall(), llvm::GCNTTIImpl::rewriteIntrinsicWithAddressSpace(), runImpl(), simplifyAMDGCNMemoryIntrinsicDemanded(), SimplifyBSwap(), llvm::InstCombinerImpl::SimplifyDemandedUseBits(), simplifyNvvmIntrinsic(), tryToFPToSat(), tryToRecognizePopCount(), llvm::updatePublicTypeTestCalls(), upgradeAbs(), llvm::UpgradeARCRuntime(), UpgradeARMIntrinsicCall(), upgradeAVX512MaskToSelect(), UpgradeIntrinsicFunction1(), UpgradePTESTIntrinsic(), UpgradeX86BF16DPIntrinsic(), UpgradeX86BF16Intrinsic(), UpgradeX86BinaryIntrinsics(), upgradeX86ConcatShift(), UpgradeX86IntrinsicFunction(), UpgradeX86IntrinsicsWith8BitMask(), UpgradeX86MaskedFPCompare(), UpgradeX86MaskedShift(), upgradeX86Rotate(), UpgradeX86VPERMT2Intrinsics(), UseTlsOffset(), llvm::InstCombinerImpl::visitAllocSite(), llvm::InstCombinerImpl::visitBitCast(), llvm::InstCombinerImpl::visitCallInst(), llvm::InstCombinerImpl::visitFPTrunc(), and llvm::InstCombinerImpl::visitXor(). The llvm::Function::Create invocation creates the function "INZ" within the current module. A PassManager, as should be obvious from its name, manages passes: Ohhh, sure, I got you. A module contains things like global variables, function declarations, and implementations. How to help a successful high schooler who is failing in college? This is a type descriptor which explains the type requirements of an intrinsic. This is nice and simple, especially since it involves no control flow: As a preview, the LLVM IR were going to end up generating for this function will look like: If you're unsure what the above code says, skim through the LLVM Language Reference Manual and convince yourself that the above LLVM IR is actually equivalent to the original function. From: David Sherwood via Phabricator via llvm-commits <llvm-commits lists ! All were doing here is instantiating a module and giving it a name. [clang][DebugInfo] Emit DISubprogram for extern functions with reserved names Now onto the interesting part: creating and populating a module. PPS: For InlineAsm function, as I think after doing searches with MetaGer, you can't declare function as cited from Kaleidoscope. Definition at line 38 of file TargetTransformInfo.h. How to control the location of a global variable in LLVM IR? Part 6: Desugaring - taking our high-level language and simplifying it! - Commandeered patch as per @aemerson's suggestion! Found footage movie where teens get superpowers after getting struck by lightning? We construct our Function by calling getOrInsertFunction() on our module, passing in the name, return type, and argument types of the function. Referenced by getIntrinsicNameImpl(), and LLVMIntrinsicGetType(). Since the signature is the same this should be possible I believe. It is the common code representation used throughout all phases of the LLVM compilation strategy. While this probably isnt really necessary for a simple module like this one, it's always a good idea, especially if youre generating LLVM IR based on some input. Provide a fast substitute to std::swap
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llvm function declaration