Index - U
| U16 | Futhark.Test.Values | 
| U16LIT | Language.Futhark.Parser.Lexer.Tokens | 
| U16Value | Futhark.Test.Values | 
| U32 | Futhark.Test.Values | 
| U32LIT | Language.Futhark.Parser.Lexer.Tokens | 
| U32Value | Futhark.Test.Values | 
| U64 | Futhark.Test.Values | 
| U64LIT | Language.Futhark.Parser.Lexer.Tokens | 
| U64Value | Futhark.Test.Values | 
| U8 | Futhark.Test.Values | 
| U8LIT | Language.Futhark.Parser.Lexer.Tokens | 
| U8Value | Futhark.Test.Values | 
| UDiv | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| UDivUp | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| UIToFP | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| UMax | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| UMin | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| UMod | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| unAliases | Futhark.IR.Aliases | 
| unAnnot | Language.Futhark.Pretty, Language.Futhark | 
| unAnnotate | Futhark.Util.Pretty | 
| unAnnotateS | Futhark.Util.Pretty | 
| unappliedFunctor | Language.Futhark.TypeChecker.Monad | 
| unAttrs | Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| Unbounded | Futhark.Util.Pretty | 
| unBuildList | Futhark.Pkg.Types | 
| unCerts | Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| UncheckedCase | Language.Futhark.Prop, Language.Futhark | 
| UncheckedDec | Language.Futhark.Prop, Language.Futhark | 
| UncheckedDimIndex | Language.Futhark.Prop, Language.Futhark | 
| UncheckedExp | Language.Futhark.Prop, Language.Futhark | 
| UncheckedIdent | Language.Futhark.Prop, Language.Futhark | 
| UncheckedLoop | Language.Futhark.TypeChecker.Terms.DoLoop | 
| UncheckedModExp | Language.Futhark.Prop, Language.Futhark | 
| UncheckedPat | Language.Futhark.Prop, Language.Futhark | 
| UncheckedProg | Language.Futhark.Prop, Language.Futhark | 
| UncheckedSigExp | Language.Futhark.Prop, Language.Futhark | 
| UncheckedSlice | Language.Futhark.Prop, Language.Futhark | 
| UncheckedSpec | Language.Futhark.Prop, Language.Futhark | 
| UncheckedType | Language.Futhark.Prop, Language.Futhark | 
| UncheckedTypeExp | Language.Futhark.Prop, Language.Futhark | 
| UncheckedTypeParam | Language.Futhark.Prop, Language.Futhark | 
| UncheckedValBind | Language.Futhark.Prop, Language.Futhark | 
| unCompound | Futhark.Test.Values | 
| unCount | Futhark.IR.GPU.Sizes, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.GPU.Op, Futhark.IR.GPU, Futhark.IR.GPUMem | 
| UNDERSCORE | Language.Futhark.Parser.Lexer.Tokens | 
| underscoreUse | Language.Futhark.TypeChecker.Monad | 
| Undeterminable | Futhark.Optimise.ArrayShortCircuiting.DataStructs | 
| UnexpectedType | Futhark.IR.TypeCheck | 
| unflattenIndex | Futhark.IR.Prop.Reshape, Futhark.IR.Prop, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| unfoldFunType | Language.Futhark.Prop, Language.Futhark | 
| unFunctions | Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL | 
| unFV | Language.Futhark.FreeVars, Language.Futhark | 
| unifies | Language.Futhark.TypeChecker.Terms.Monad | 
| uniformH | Futhark.CodeGen.RTS.C | 
| unify | Language.Futhark.TypeChecker.Unify | 
| unifyError | Language.Futhark.TypeChecker.Unify | 
| unifyMostCommon | Language.Futhark.TypeChecker.Unify | 
| unInfo | Language.Futhark.Syntax, Language.Futhark | 
| unionCoalsEntry | Futhark.Optimise.ArrayShortCircuiting.DataStructs | 
| Unique | Language.Futhark.Core, Futhark.CodeGen.Backends.GenericPython.AST, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Language.Futhark.Syntax, Language.Futhark | 
| unique | |
| 1 (Function) | Futhark.IR.Prop.Types, Futhark.IR.Prop, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| 2 (Function) | Language.Futhark.Prop, Language.Futhark | 
| Uniqueness | Language.Futhark.Core, Futhark.CodeGen.Backends.GenericPython.AST, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Language.Futhark.Syntax, Language.Futhark | 
| uniqueness | |
| 1 (Function) | Futhark.IR.Prop.Types, Futhark.IR.Prop, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| 2 (Function) | Language.Futhark.Prop, Language.Futhark | 
| UniqueReturnAliased | Futhark.IR.TypeCheck | 
| uniqueReturnAliased | Language.Futhark.TypeChecker.Terms.Monad | 
| Unit | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| unitAdjOfType | Futhark.AD.Rev.Monad | 
| unitSlice | Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| UnitValue | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| unixEnvironment | Futhark.Util | 
| UnknowableSize | Language.Futhark.TypeChecker.Unify | 
| Unknown | Futhark.IR.Mem.IxFun | 
| UnknownFunctionError | Futhark.IR.TypeCheck | 
| unknownType | Language.Futhark.TypeChecker.Monad | 
| unknownVariable | Language.Futhark.TypeChecker.Monad | 
| UnknownVariableError | Futhark.IR.TypeCheck | 
| unless | Futhark.Pass.ExplicitAllocations | 
| Unlifted | Language.Futhark.Syntax, Language.Futhark | 
| unLoc | Futhark.Util.Loc | 
| unmatched | Language.Futhark.TypeChecker.Match | 
| Unnamed | Language.Futhark.Syntax, Language.Futhark | 
| UnOp | |
| 1 (Data Constructor) | Futhark.CodeGen.Backends.GenericPython.AST | 
| 2 (Type/Class) | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| 3 (Data Constructor) | Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| UnOpExp | Futhark.Analysis.PrimExp, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.Tools, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| unOpType | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| unpackDim | Futhark.CodeGen.Backends.GenericPython | 
| unpairs | Futhark.Util | 
| unRefMem | Futhark.CodeGen.Backends.GenericC.Monad, Futhark.CodeGen.Backends.GenericC.Fun, Futhark.CodeGen.Backends.GenericC | 
| Unsafe | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| unsafeViaShow | Futhark.Util.Pretty | 
| unSegSpace | Futhark.IR.SegOp, Futhark.IR.MC.Op, Futhark.IR.MC, Futhark.IR.GPU.Op, Futhark.IR.GPU, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| Unsigned | |
| 1 (Data Constructor) | Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| 2 (Data Constructor) | Language.Futhark.Syntax, Language.Futhark | 
| UnsignedValue | Language.Futhark.Syntax, Language.Futhark | 
| unSlice | Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| unstreamGPU | Futhark.Optimise.Unstream | 
| unstreamMC | Futhark.Optimise.Unstream | 
| untyped | Futhark.Analysis.PrimExp, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.Tools, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| unusedSize | Language.Futhark.TypeChecker.Terms.Monad | 
| Update | |
| 1 (Data Constructor) | Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| 2 (Data Constructor) | Language.Futhark.Syntax, Language.Futhark | 
| update | Futhark.Optimise.TileLoops.Shared | 
| UpdateAcc | Futhark.IR.Syntax, Futhark.IR, Futhark.IR.Aliases, Futhark.IR.Seq, Futhark.IR.SOACS, Futhark.IR.Mem, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem | 
| updateAcc | Futhark.CodeGen.ImpGen.GPU.Base | 
| updateAdj | Futhark.AD.Rev.Monad | 
| updateAdjIndex | Futhark.AD.Rev.Monad | 
| updateAdjSlice | Futhark.AD.Rev.Monad | 
| updateCerts | Futhark.Optimise.InPlaceLowering.LowerIntoStm | 
| updateIndices | Futhark.Optimise.InPlaceLowering.LowerIntoStm | 
| updateName | Futhark.Optimise.InPlaceLowering.LowerIntoStm | 
| updateSource | Futhark.Optimise.InPlaceLowering.LowerIntoStm | 
| updateStaleContent | Futhark.LSP.State | 
| updateStaleMapping | Futhark.LSP.State | 
| updateSubExpAdj | Futhark.AD.Rev.Monad | 
| updateTopdownEnv | Futhark.Optimise.ArrayShortCircuiting.TopdownAnalysis | 
| updateTopdownEnvLoop | Futhark.Optimise.ArrayShortCircuiting.TopdownAnalysis | 
| updateType | Futhark.Optimise.InPlaceLowering.LowerIntoStm | 
| updateTypes | Language.Futhark.TypeChecker.Terms.Monad | 
| updateValue | Futhark.Optimise.InPlaceLowering.LowerIntoStm | 
| UpToExclusive | Language.Futhark.Syntax, Language.Futhark | 
| Usage | |
| 1 (Type/Class) | Language.Futhark.TypeChecker.Unify | 
| 2 (Data Constructor) | Language.Futhark.TypeChecker.Unify | 
| usage | Futhark.Analysis.UsageTable | 
| usageInfo | Futhark.Util.Options | 
| usageInPat | Futhark.Analysis.UsageTable | 
| usageInStm | Futhark.Analysis.UsageTable | 
| Usages | Futhark.Analysis.UsageTable | 
| usages | Futhark.Analysis.UsageTable | 
| UsageTable | Futhark.Analysis.UsageTable | 
| used | Futhark.Analysis.UsageTable | 
| UsedOnHost | Futhark.Optimise.ReduceDeviceSyncs.MigrationTable | 
| usedOnHost | Futhark.Optimise.ReduceDeviceSyncs.MigrationTable | 
| UserText | Futhark.Util | 
| usesAD | Futhark.IR.SOACS | 
| USignum | Language.Futhark.Primitive, Futhark.IR.Syntax.Core, Futhark.IR.Syntax, Futhark.Analysis.PrimExp, Futhark.IR, Futhark.IR.Aliases, Futhark.Analysis.PrimExp.Convert, Futhark.CodeGen.ImpCode, Futhark.CodeGen.ImpCode.Sequential, Futhark.CodeGen.ImpCode.Multicore, Futhark.CodeGen.ImpCode.GPU, Futhark.CodeGen.ImpCode.OpenCL, Futhark.IR.Seq, Futhark.Tools, Futhark.IR.SOACS, Futhark.Internalise.Monad, Futhark.IR.Mem, Futhark.Pass.ExplicitAllocations, Futhark.IR.MC, Futhark.IR.GPU, Futhark.IR.SeqMem, Futhark.IR.MCMem, Futhark.IR.GPUMem, Futhark.Analysis.PrimExp.Parse | 
| utilH | Futhark.CodeGen.RTS.C |