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Optimizer.fs
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Optimizer.fs
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// Copyright (c) Microsoft Corporation. All Rights Reserved. See License.txt in the project root for license information.
//-------------------------------------------------------------------------
// The F# expression simplifier. The main aim is to inline simple, known functions
// and constant values, and to eliminate non-side-affecting bindings that
// are never used.
//-------------------------------------------------------------------------
module internal Microsoft.FSharp.Compiler.Optimizer
open Internal.Utilities
open Microsoft.FSharp.Compiler.AbstractIL.Diagnostics
open Microsoft.FSharp.Compiler.AbstractIL.IL
open Microsoft.FSharp.Compiler.AbstractIL.Internal
open Microsoft.FSharp.Compiler.AbstractIL.Internal.Library
open Microsoft.FSharp.Compiler
open Microsoft.FSharp.Compiler.Lib
open Microsoft.FSharp.Compiler.Range
open Microsoft.FSharp.Compiler.Ast
open Microsoft.FSharp.Compiler.AttributeChecking
open Microsoft.FSharp.Compiler.ErrorLogger
open Microsoft.FSharp.Compiler.Infos
open Microsoft.FSharp.Compiler.Tast
open Microsoft.FSharp.Compiler.TastPickle
open Microsoft.FSharp.Compiler.Tastops
open Microsoft.FSharp.Compiler.Tastops.DebugPrint
open Microsoft.FSharp.Compiler.TcGlobals
open Microsoft.FSharp.Compiler.Layout
open Microsoft.FSharp.Compiler.Layout.TaggedTextOps
open Microsoft.FSharp.Compiler.TypeRelations
open System.Collections.Generic
#if DEBUG
let verboseOptimizationInfo =
try not (System.String.IsNullOrEmpty (System.Environment.GetEnvironmentVariable "FSHARP_verboseOptimizationInfo")) with _ -> false
let verboseOptimizations =
try not (System.String.IsNullOrEmpty (System.Environment.GetEnvironmentVariable "FSHARP_verboseOptimizations")) with _ -> false
#else
let [<Literal>] verboseOptimizationInfo = false
let [<Literal>] verboseOptimizations = false
#endif
let i_ldlen = [ I_ldlen; (AI_conv DT_I4) ]
let [<Literal>] callSize = 1 // size of a function call
let [<Literal>] forAndWhileLoopSize = 5 // size of a for/while loop
let [<Literal>] tryCatchSize = 5 // size of a try/catch
let [<Literal>] tryFinallySize = 5 // size of a try/finally
let [<Literal>] closureTotalSize = 10 // Total cost of a closure. Each closure adds a class definition
let [<Literal>] methodDefnTotalSize = 1 // Total cost of a method definition
//-------------------------------------------------------------------------
// Partial information about an expression.
//
// We store one of these for each value in the environment, including values
// which we know little or nothing about.
//-------------------------------------------------------------------------
type TypeValueInfo =
| UnknownTypeValue
type ExprValueInfo =
| UnknownValue
/// SizeValue(size, value)
///
/// Records size info (maxDepth) for an ExprValueInfo
| SizeValue of int * ExprValueInfo
/// ValValue(vref, value)
///
/// Records that a value is equal to another value, along with additional
/// information.
| ValValue of ValRef * ExprValueInfo
| TupleValue of ExprValueInfo[]
/// RecdValue(tycon, values)
///
/// INVARIANT: values are in field definition order .
| RecdValue of TyconRef * ExprValueInfo[]
| UnionCaseValue of UnionCaseRef * ExprValueInfo[]
| ConstValue of Const * TType
/// CurriedLambdaValue(id, arity, sz, expr, ty)
///
/// arities: The number of bunches of untupled args and type args, and
/// the number of args in each bunch. NOTE: This include type arguments.
/// expr: The value, a lambda term.
/// ty: The type of lamba term
| CurriedLambdaValue of Unique * int * int * Expr * TType
/// ConstExprValue(size, value)
| ConstExprValue of int * Expr
type ValInfo =
{ ValMakesNoCriticalTailcalls: bool
ValExprInfo: ExprValueInfo }
//-------------------------------------------------------------------------
// Partial information about entire namespace fragments or modules
//
// This is a somewhat nasty data structure since
// (a) we need the lookups to be very efficient
// (b) we need to be able to merge these efficiently while building up the overall data for a module
// (c) we pickle these to the binary optimization data format
// (d) we don't want the process of unpickling the data structure to
// dereference/resolve all the ValRef's in the data structure, since
// this would be slow on startup and a potential failure point should
// any of the destination values not dereference correctly.
//
// It doesn't yet feel like we've got this data structure as good as it could be
//-------------------------------------------------------------------------
/// Table of the values contained in one module
type ValInfos(entries) =
let valInfoTable =
lazy (let t = ValHash.Create ()
for (vref:ValRef, x) in entries do
t.Add (vref.Deref, (vref, x))
t)
// The compiler ValRef's into fslib stored in env.fs break certain invariants that hold elsewhere,
// because they dereference to point to Val's from signatures rather than Val's from implementations.
// Thus a backup alternative resolution technique is needed for these.
let valInfosForFslib =
lazy (
let dict = Dictionary<_, _>()
for (vref, _x) as p in entries do
let vkey = vref.Deref.GetLinkagePartialKey()
dict.Add(vkey, p) |> ignore
dict)
member x.Entries = valInfoTable.Force().Values
member x.Map f = ValInfos(Seq.map f x.Entries)
member x.Filter f = ValInfos(Seq.filter f x.Entries)
member x.TryFind (v:ValRef) = valInfoTable.Force().TryFind v.Deref
member x.TryFindForFslib (v:ValRef) = valInfosForFslib.Force().TryGetValue(v.Deref.GetLinkagePartialKey())
type ModuleInfo =
{ ValInfos: ValInfos
ModuleOrNamespaceInfos: NameMap<LazyModuleInfo> }
and LazyModuleInfo = Lazy<ModuleInfo>
type ImplFileOptimizationInfo = LazyModuleInfo
type CcuOptimizationInfo = LazyModuleInfo
#if DEBUG
let braceL x = leftL (tagText "{") ^^ x ^^ rightL (tagText "}")
let seqL xL xs = Seq.fold (fun z x -> z @@ xL x) emptyL xs
let namemapL xL xmap = NameMap.foldBack (fun nm x z -> xL nm x @@ z) xmap emptyL
let rec exprValueInfoL g = function
| ConstValue (x, ty) -> NicePrint.layoutConst g ty x
| UnknownValue -> wordL (tagText "?")
| SizeValue (_, vinfo) -> exprValueInfoL g vinfo
| ValValue (vr, vinfo) -> bracketL ((valRefL vr ^^ wordL (tagText "alias")) --- exprValueInfoL g vinfo)
| TupleValue vinfos -> bracketL (exprValueInfosL g vinfos)
| RecdValue (_, vinfos) -> braceL (exprValueInfosL g vinfos)
| UnionCaseValue (ucr, vinfos) -> unionCaseRefL ucr ^^ bracketL (exprValueInfosL g vinfos)
| CurriedLambdaValue(_lambdaId, _arities, _bsize, expr', _ety) -> wordL (tagText "lam") ++ exprL expr' (* (sprintf "lam(size=%d)" bsize) *)
| ConstExprValue (_size, x) -> exprL x
and exprValueInfosL g vinfos = commaListL (List.map (exprValueInfoL g) (Array.toList vinfos))
and moduleInfoL g (x:LazyModuleInfo) =
let x = x.Force()
braceL ((wordL (tagText "Modules: ") @@ (x.ModuleOrNamespaceInfos |> namemapL (fun nm x -> wordL (tagText nm) ^^ moduleInfoL g x) ) )
@@ (wordL (tagText "Values:") @@ (x.ValInfos.Entries |> seqL (fun (vref, x) -> valRefL vref ^^ valInfoL g x) )))
and valInfoL g (x:ValInfo) =
braceL ((wordL (tagText "ValExprInfo: ") @@ exprValueInfoL g x.ValExprInfo)
@@ (wordL (tagText "ValMakesNoCriticalTailcalls:") @@ wordL (tagText (if x.ValMakesNoCriticalTailcalls then "true" else "false"))))
#endif
type Summary<'Info> =
{ Info: 'Info
/// What's the contribution to the size of this function?
FunctionSize: int
/// What's the total contribution to the size of the assembly, including closure classes etc.?
TotalSize: int
/// Meaning: could mutate, could non-terminate, could raise exception
/// One use: an effect expr can not be eliminated as dead code (e.g. sequencing)
/// One use: an effect=false expr can not throw an exception? so try-catch is removed.
HasEffect: bool
/// Indicates that a function may make a useful tailcall, hence when called should itself be tailcalled
MightMakeCriticalTailcall: bool
}
//-------------------------------------------------------------------------
// BoundValueInfoBySize
// Note, this is a different notion of "size" to the one used for inlining heuristics
//-------------------------------------------------------------------------
let rec SizeOfValueInfos (arr:_[]) =
if arr.Length <= 0 then 0 else max 0 (SizeOfValueInfo arr.[0])
and SizeOfValueInfo x =
match x with
| SizeValue (vdepth, _v) -> vdepth (* terminate recursion at CACHED size nodes *)
| ConstValue (_x, _) -> 1
| UnknownValue -> 1
| ValValue (_vr, vinfo) -> SizeOfValueInfo vinfo + 1
| TupleValue vinfos
| RecdValue (_, vinfos)
| UnionCaseValue (_, vinfos) -> 1 + SizeOfValueInfos vinfos
| CurriedLambdaValue(_lambdaId, _arities, _bsize, _expr', _ety) -> 1
| ConstExprValue (_size, _) -> 1
let [<Literal>] minDepthForASizeNode = 5 (* for small vinfos do not record size info, save space *)
let rec MakeValueInfoWithCachedSize vdepth v =
match v with
| SizeValue(_, v) -> MakeValueInfoWithCachedSize vdepth v
| _ -> if vdepth > minDepthForASizeNode then SizeValue(vdepth, v) else v (* add nodes to stop recursion *)
let MakeSizedValueInfo v =
let vdepth = SizeOfValueInfo v
MakeValueInfoWithCachedSize vdepth v
let BoundValueInfoBySize vinfo =
let rec bound depth x =
if depth < 0 then
UnknownValue
else
match x with
| SizeValue (vdepth, vinfo) -> if vdepth < depth then x else MakeSizedValueInfo (bound depth vinfo)
| ValValue (vr, vinfo) -> ValValue (vr, bound (depth-1) vinfo)
| TupleValue vinfos -> TupleValue (Array.map (bound (depth-1)) vinfos)
| RecdValue (tcref, vinfos) -> RecdValue (tcref, Array.map (bound (depth-1)) vinfos)
| UnionCaseValue (ucr, vinfos) -> UnionCaseValue (ucr, Array.map (bound (depth-1)) vinfos)
| ConstValue _ -> x
| UnknownValue -> x
| CurriedLambdaValue(_lambdaId, _arities, _bsize, _expr', _ety) -> x
| ConstExprValue (_size, _) -> x
let maxDepth = 6 (* beware huge constants! *)
let trimDepth = 3
let vdepth = SizeOfValueInfo vinfo
if vdepth > maxDepth
then MakeSizedValueInfo (bound trimDepth vinfo)
else MakeValueInfoWithCachedSize vdepth vinfo
//-------------------------------------------------------------------------
// What we know about the world
//-------------------------------------------------------------------------
let [<Literal>] jitOptDefault = true
let [<Literal>] localOptDefault = true
let [<Literal>] crossModuleOptDefault = true
type OptimizationSettings =
{ abstractBigTargets : bool
jitOptUser : bool option
localOptUser : bool option
crossModuleOptUser : bool option
/// size after which we start chopping methods in two, though only at match targets
bigTargetSize : int
/// size after which we start enforcing splitting sub-expressions to new methods, to avoid hitting .NET IL limitations
veryBigExprSize : int
/// The size after which we don't inline
lambdaInlineThreshold : int
/// For unit testing
reportingPhase : bool
reportNoNeedToTailcall: bool
reportFunctionSizes : bool
reportHasEffect : bool
reportTotalSizes : bool }
static member Defaults =
{ abstractBigTargets = false
jitOptUser = None
localOptUser = None
/// size after which we start chopping methods in two, though only at match targets
bigTargetSize = 100
/// size after which we start enforcing splitting sub-expressions to new methods, to avoid hitting .NET IL limitations
veryBigExprSize = 3000
crossModuleOptUser = None
/// The size after which we don't inline
lambdaInlineThreshold = 6
reportingPhase = false
reportNoNeedToTailcall = false
reportFunctionSizes = false
reportHasEffect = false
reportTotalSizes = false
}
member x.jitOpt() = match x.jitOptUser with Some f -> f | None -> jitOptDefault
member x.localOpt () = match x.localOptUser with Some f -> f | None -> localOptDefault
member x.crossModuleOpt () = x.localOpt () && (match x.crossModuleOptUser with Some f -> f | None -> crossModuleOptDefault)
member x.KeepOptimizationValues() = x.crossModuleOpt ()
/// inline calls *
member x.InlineLambdas () = x.localOpt ()
/// eliminate unused bindings with no effect
member x.EliminateUnusedBindings () = x.localOpt ()
/// eliminate try around expr with no effect
member x.EliminateTryCatchAndTryFinally () = false // deemed too risky, given tiny overhead of including try/catch. See https://github.com/Microsoft/visualfsharp/pull/376
/// eliminate first part of seq if no effect
member x.EliminateSequential () = x.localOpt ()
/// determine branches in pattern matching
member x.EliminateSwitch () = x.localOpt ()
member x.EliminateRecdFieldGet () = x.localOpt ()
member x.EliminateTupleFieldGet () = x.localOpt ()
member x.EliminatUnionCaseFieldGet () = x.localOpt ()
/// eliminate non-compiler generated immediate bindings
member x.EliminateImmediatelyConsumedLocals() = x.localOpt ()
/// expand "let x = (exp1, exp2, ...)" bind fields as prior tmps
member x.ExpandStructrualValues() = x.localOpt ()
type cenv =
{ g: TcGlobals
TcVal : ConstraintSolver.TcValF
amap: Import.ImportMap
optimizing: bool
scope: CcuThunk
localInternalVals: System.Collections.Generic.Dictionary<Stamp, ValInfo>
settings: OptimizationSettings
emitTailcalls: bool
// cache methods with SecurityAttribute applied to them, to prevent unnecessary calls to ExistsInEntireHierarchyOfType
casApplied : Dictionary<Stamp, bool>}
type IncrementalOptimizationEnv =
{ // An identifier to help with name generation
latestBoundId: Ident option
// The set of lambda IDs we've inlined to reach this point. Helps to prevent recursive inlining
dontInline: Zset<Unique>
// Recursively bound vars. If an sub-expression that is a candidate for method splitting
// contains any of these variables then don't split it, for fear of mucking up tailcalls.
// See FSharp 1.0 bug 2892
dontSplitVars: ValMap<unit>
// Disable method splitting in loops
inLoop: bool
/// The Val for the function binding being generated, if any.
functionVal: (Val * Tast.ValReprInfo) option
typarInfos: (Typar * TypeValueInfo) list
localExternalVals: LayeredMap<Stamp, ValInfo>
globalModuleInfos: LayeredMap<string, LazyModuleInfo> }
static member Empty =
{ latestBoundId = None
dontInline = Zset.empty Int64.order
typarInfos = []
functionVal = None
dontSplitVars = ValMap.Empty
inLoop = false
localExternalVals = LayeredMap.Empty
globalModuleInfos = LayeredMap.Empty }
//-------------------------------------------------------------------------
// IsPartialExprVal - is the expr fully known?
//-------------------------------------------------------------------------
let rec IsPartialExprVal x = (* IsPartialExprVal can not rebuild to an expr *)
match x with
| UnknownValue -> true
| TupleValue args | RecdValue (_, args) | UnionCaseValue (_, args) -> Array.exists IsPartialExprVal args
| ConstValue _ | CurriedLambdaValue _ | ConstExprValue _ -> false
| ValValue (_, a)
| SizeValue(_, a) -> IsPartialExprVal a
let CheckInlineValueIsComplete (v:Val) res =
if v.MustInline && IsPartialExprVal res then
errorR(Error(FSComp.SR.optValueMarkedInlineButIncomplete(v.DisplayName), v.Range))
//System.Diagnostics.Debug.Assert(false, sprintf "Break for incomplete inline value %s" v.DisplayName)
let check (vref: ValRef) (res:ValInfo) =
CheckInlineValueIsComplete vref.Deref res.ValExprInfo
(vref, res)
//-------------------------------------------------------------------------
// Bind information about values
//-------------------------------------------------------------------------
let EmptyModuleInfo = notlazy { ValInfos = ValInfos([]); ModuleOrNamespaceInfos = Map.empty }
let rec UnionOptimizationInfos (minfos : seq<LazyModuleInfo>) =
notlazy
{ ValInfos = ValInfos(seq { for minfo in minfos do yield! minfo.Force().ValInfos.Entries })
ModuleOrNamespaceInfos = minfos |> Seq.map (fun m -> m.Force().ModuleOrNamespaceInfos) |> NameMap.union UnionOptimizationInfos }
let FindOrCreateModuleInfo n (ss: Map<_, _>) =
match ss.TryFind n with
| Some res -> res
| None -> EmptyModuleInfo
let FindOrCreateGlobalModuleInfo n (ss: LayeredMap<_, _>) =
match ss.TryFind n with
| Some res -> res
| None -> EmptyModuleInfo
let rec BindValueInSubModuleFSharpCore (mp:string[]) i (v:Val) vval ss =
if i < mp.Length then
{ss with ModuleOrNamespaceInfos = BindValueInModuleForFslib mp.[i] mp (i+1) v vval ss.ModuleOrNamespaceInfos }
else
// REVIEW: this line looks quadratic for performance when compiling FSharp.Core
{ss with ValInfos = ValInfos(Seq.append ss.ValInfos.Entries (Seq.singleton (mkLocalValRef v, vval))) }
and BindValueInModuleForFslib n mp i v vval (ss: NameMap<_>) =
let old = FindOrCreateModuleInfo n ss
Map.add n (notlazy (BindValueInSubModuleFSharpCore mp i v vval (old.Force()))) ss
and BindValueInGlobalModuleForFslib n mp i v vval (ss: LayeredMap<_, _>) =
let old = FindOrCreateGlobalModuleInfo n ss
ss.Add(n, notlazy (BindValueInSubModuleFSharpCore mp i v vval (old.Force())))
let BindValueForFslib (nlvref : NonLocalValOrMemberRef) v vval env =
{env with globalModuleInfos = BindValueInGlobalModuleForFslib nlvref.AssemblyName nlvref.EnclosingEntity.nlr.Path 0 v vval env.globalModuleInfos }
let UnknownValInfo = { ValExprInfo=UnknownValue; ValMakesNoCriticalTailcalls=false }
let mkValInfo info (v:Val) = { ValExprInfo=info.Info; ValMakesNoCriticalTailcalls= v.MakesNoCriticalTailcalls }
(* Bind a value *)
let BindInternalLocalVal cenv (v:Val) vval env =
let vval = if v.IsMutable then UnknownValInfo else vval
#if CHECKED
#else
match vval.ValExprInfo with
| UnknownValue -> env
| _ ->
#endif
cenv.localInternalVals.[v.Stamp] <- vval
env
let BindExternalLocalVal cenv (v:Val) vval env =
#if CHECKED
CheckInlineValueIsComplete v vval
#endif
let vval = if v.IsMutable then {vval with ValExprInfo=UnknownValue } else vval
let env =
#if CHECKED
#else
match vval.ValExprInfo with
| UnknownValue -> env
| _ ->
#endif
{ env with localExternalVals=env.localExternalVals.Add (v.Stamp, vval) }
// If we're compiling fslib then also bind the value as a non-local path to
// allow us to resolve the compiler-non-local-references that arise from env.fs
//
// Do this by generating a fake "looking from the outside in" non-local value reference for
// v, dereferencing it to find the corresponding signature Val, and adding an entry for the signature val.
//
// A similar code path exists in ilxgen.fs for the tables of "representations" for values
let env =
if cenv.g.compilingFslib then
// Passing an empty remap is sufficient for FSharp.Core.dll because it turns out the remapped type signature can
// still be resolved.
match tryRescopeVal cenv.g.fslibCcu Remap.Empty v with
| ValueSome vref -> BindValueForFslib vref.nlr v vval env
| _ -> env
else env
env
let rec BindValsInModuleOrNamespace cenv (mval:LazyModuleInfo) env =
let mval = mval.Force()
// do all the sub modules
let env = (mval.ModuleOrNamespaceInfos, env) ||> NameMap.foldBackRange (BindValsInModuleOrNamespace cenv)
let env = (env, mval.ValInfos.Entries) ||> Seq.fold (fun env (v:ValRef, vval) -> BindExternalLocalVal cenv v.Deref vval env)
env
let inline BindInternalValToUnknown cenv v env =
#if CHECKED
BindInternalLocalVal cenv v UnknownValue env
#else
ignore cenv
ignore v
env
#endif
let inline BindInternalValsToUnknown cenv vs env =
#if CHECKED
List.foldBack (BindInternalValToUnknown cenv) vs env
#else
ignore cenv
ignore vs
env
#endif
let BindTypeVar tyv typeinfo env = { env with typarInfos= (tyv, typeinfo)::env.typarInfos }
let BindTypeVarsToUnknown (tps:Typar list) env =
if isNil tps then env else
// The optimizer doesn't use the type values it could track.
// However here we mutate to provide better names for generalized type parameters
// The names chosen are 'a', 'b' etc. These are also the compiled names in the IL code
let nms = PrettyTypes.PrettyTyparNames (fun _ -> true) (env.typarInfos |> List.map (fun (tp, _) -> tp.Name) ) tps
(tps, nms) ||> List.iter2 (fun tp nm ->
if PrettyTypes.NeedsPrettyTyparName tp then
tp.typar_id <- ident (nm, tp.Range))
List.fold (fun sofar arg -> BindTypeVar arg UnknownTypeValue sofar) env tps
let BindCcu (ccu:Tast.CcuThunk) mval env (_g:TcGlobals) =
{ env with globalModuleInfos=env.globalModuleInfos.Add(ccu.AssemblyName, mval) }
//-------------------------------------------------------------------------
// Lookup information about values
//-------------------------------------------------------------------------
let GetInfoForLocalValue cenv env (v:Val) m =
(* Abstract slots do not have values *)
if v.IsDispatchSlot then UnknownValInfo
else
let mutable res = Unchecked.defaultof<_>
let ok = cenv.localInternalVals.TryGetValue(v.Stamp, &res)
if ok then res else
match env.localExternalVals.TryFind v.Stamp with
| Some vval -> vval
| None ->
if v.MustInline then
errorR(Error(FSComp.SR.optValueMarkedInlineButWasNotBoundInTheOptEnv(fullDisplayTextOfValRef (mkLocalValRef v)), m))
#if CHECKED
warning(Error(FSComp.SR.optLocalValueNotFoundDuringOptimization(v.DisplayName), m))
#endif
UnknownValInfo
let TryGetInfoForCcu env (ccu:CcuThunk) = env.globalModuleInfos.TryFind(ccu.AssemblyName)
let TryGetInfoForEntity sv n =
match sv.ModuleOrNamespaceInfos.TryFind n with
| Some info -> Some (info.Force())
| None -> None
let rec TryGetInfoForPath sv (p:_[]) i =
if i >= p.Length then Some sv else
match TryGetInfoForEntity sv p.[i] with
| Some info -> TryGetInfoForPath info p (i+1)
| None -> None
let TryGetInfoForNonLocalEntityRef env (nleref: NonLocalEntityRef) =
match TryGetInfoForCcu env nleref.Ccu with
| Some ccuinfo -> TryGetInfoForPath (ccuinfo.Force()) nleref.Path 0
| None -> None
let GetInfoForNonLocalVal cenv env (vref:ValRef) =
if vref.IsDispatchSlot then
UnknownValInfo
// REVIEW: optionally turn x-module on/off on per-module basis or
elif cenv.settings.crossModuleOpt () || vref.MustInline then
match TryGetInfoForNonLocalEntityRef env vref.nlr.EnclosingEntity.nlr with
| Some(structInfo) ->
match structInfo.ValInfos.TryFind(vref) with
| Some ninfo -> snd ninfo
| None ->
//dprintn ("\n\n*** Optimization info for value "+n+" from module "+(full_name_of_nlpath smv)+" not found, module contains values: "+String.concat ", " (NameMap.domainL structInfo.ValInfos))
//System.Diagnostics.Debug.Assert(false, sprintf "Break for module %s, value %s" (full_name_of_nlpath smv) n)
if cenv.g.compilingFslib then
match structInfo.ValInfos.TryFindForFslib(vref) with
| true, ninfo -> snd ninfo
| _ -> UnknownValInfo
else
UnknownValInfo
| None ->
//dprintf "\n\n*** Optimization info for module %s from ccu %s not found." (full_name_of_nlpath smv) (ccu_of_nlpath smv).AssemblyName
//System.Diagnostics.Debug.Assert(false, sprintf "Break for module %s, ccu %s" (full_name_of_nlpath smv) (ccu_of_nlpath smv).AssemblyName)
UnknownValInfo
else
UnknownValInfo
let GetInfoForVal cenv env m (vref:ValRef) =
let res =
if vref.IsLocalRef then
GetInfoForLocalValue cenv env vref.binding m
else
GetInfoForNonLocalVal cenv env vref
check (* "its stored value was incomplete" m *) vref res |> ignore
res
//-------------------------------------------------------------------------
// Try to get information about values of particular types
//-------------------------------------------------------------------------
let rec stripValue = function
| ValValue(_, details) -> stripValue details (* step through ValValue "aliases" *)
| SizeValue(_, details) -> stripValue details (* step through SizeValue "aliases" *)
| vinfo -> vinfo
let (|StripConstValue|_|) ev =
match stripValue ev with
| ConstValue(c, _) -> Some c
| _ -> None
let (|StripLambdaValue|_|) ev =
match stripValue ev with
| CurriedLambdaValue (id, arity, sz, expr, ty) -> Some (id, arity, sz, expr, ty)
| _ -> None
let destTupleValue ev =
match stripValue ev with
| TupleValue info -> Some info
| _ -> None
let destRecdValue ev =
match stripValue ev with
| RecdValue (_tcref, info) -> Some info
| _ -> None
let (|StripUnionCaseValue|_|) ev =
match stripValue ev with
| UnionCaseValue (c, info) -> Some (c, info)
| _ -> None
let mkBoolVal (g: TcGlobals) n = ConstValue(Const.Bool n, g.bool_ty)
let mkInt8Val (g: TcGlobals) n = ConstValue(Const.SByte n, g.sbyte_ty)
let mkInt16Val (g: TcGlobals) n = ConstValue(Const.Int16 n, g.int16_ty)
let mkInt32Val (g: TcGlobals) n = ConstValue(Const.Int32 n, g.int32_ty)
let mkInt64Val (g: TcGlobals) n = ConstValue(Const.Int64 n, g.int64_ty)
let mkUInt8Val (g: TcGlobals) n = ConstValue(Const.Byte n, g.byte_ty)
let mkUInt16Val (g: TcGlobals) n = ConstValue(Const.UInt16 n, g.uint16_ty)
let mkUInt32Val (g: TcGlobals) n = ConstValue(Const.UInt32 n, g.uint32_ty)
let mkUInt64Val (g: TcGlobals) n = ConstValue(Const.UInt64 n, g.uint64_ty)
let (|StripInt32Value|_|) = function StripConstValue(Const.Int32 n) -> Some n | _ -> None
//-------------------------------------------------------------------------
// mk value_infos
//-------------------------------------------------------------------------
let MakeValueInfoForValue g m vref vinfo =
#if DEBUG
let rec check x =
match x with
| ValValue (vref2, detail) -> if valRefEq g vref vref2 then error(Error(FSComp.SR.optRecursiveValValue(showL(exprValueInfoL g vinfo)), m)) else check detail
| SizeValue (_n, detail) -> check detail
| _ -> ()
check vinfo
#else
ignore g; ignore m
#endif
ValValue (vref, vinfo) |> BoundValueInfoBySize
let MakeValueInfoForRecord tcref argvals = RecdValue (tcref, argvals) |> BoundValueInfoBySize
let MakeValueInfoForTuple argvals = TupleValue argvals |> BoundValueInfoBySize
let MakeValueInfoForUnionCase cspec argvals = UnionCaseValue (cspec, argvals) |> BoundValueInfoBySize
let MakeValueInfoForConst c ty = ConstValue(c, ty)
// Helper to evaluate a unary integer operation over known values
let inline IntegerUnaryOp g f8 f16 f32 f64 fu8 fu16 fu32 fu64 a =
match a with
| StripConstValue(c) ->
match c with
| Const.Bool a -> Some(mkBoolVal g (f32 (if a then 1 else 0) <> 0))
| Const.Int32 a -> Some(mkInt32Val g (f32 a))
| Const.Int64 a -> Some(mkInt64Val g (f64 a))
| Const.Int16 a -> Some(mkInt16Val g (f16 a))
| Const.SByte a -> Some(mkInt8Val g (f8 a))
| Const.Byte a -> Some(mkUInt8Val g (fu8 a))
| Const.UInt32 a -> Some(mkUInt32Val g (fu32 a))
| Const.UInt64 a -> Some(mkUInt64Val g (fu64 a))
| Const.UInt16 a -> Some(mkUInt16Val g (fu16 a))
| _ -> None
| _ -> None
// Helper to evaluate a unary signed integer operation over known values
let inline SignedIntegerUnaryOp g f8 f16 f32 f64 a =
match a with
| StripConstValue(c) ->
match c with
| Const.Int32 a -> Some(mkInt32Val g (f32 a))
| Const.Int64 a -> Some(mkInt64Val g (f64 a))
| Const.Int16 a -> Some(mkInt16Val g (f16 a))
| Const.SByte a -> Some(mkInt8Val g (f8 a))
| _ -> None
| _ -> None
// Helper to evaluate a binary integer operation over known values
let inline IntegerBinaryOp g f8 f16 f32 f64 fu8 fu16 fu32 fu64 a b =
match a, b with
| StripConstValue(c1), StripConstValue(c2) ->
match c1, c2 with
| (Const.Bool a), (Const.Bool b) -> Some(mkBoolVal g (f32 (if a then 1 else 0) (if b then 1 else 0) <> 0))
| (Const.Int32 a), (Const.Int32 b) -> Some(mkInt32Val g (f32 a b))
| (Const.Int64 a), (Const.Int64 b) -> Some(mkInt64Val g (f64 a b))
| (Const.Int16 a), (Const.Int16 b) -> Some(mkInt16Val g (f16 a b))
| (Const.SByte a), (Const.SByte b) -> Some(mkInt8Val g (f8 a b))
| (Const.Byte a), (Const.Byte b) -> Some(mkUInt8Val g (fu8 a b))
| (Const.UInt16 a), (Const.UInt16 b) -> Some(mkUInt16Val g (fu16 a b))
| (Const.UInt32 a), (Const.UInt32 b) -> Some(mkUInt32Val g (fu32 a b))
| (Const.UInt64 a), (Const.UInt64 b) -> Some(mkUInt64Val g (fu64 a b))
| _ -> None
| _ -> None
module Unchecked = Microsoft.FSharp.Core.Operators
/// Evaluate primitives based on interpretation of IL instructions.
//
// The implementation
// utilizes F# arithmetic extensively, so a mistake in the implementation of F# arithmetic
// in the core library used by the F# compiler will propagate to be a mistake in optimization.
// The IL instructions appear in the tree through inlining.
let mkAssemblyCodeValueInfo g instrs argvals tys =
match instrs, argvals, tys with
| [ AI_add ], [t1;t2], _ ->
// Note: each use of Unchecked.(+) gets instantiated at a different type and inlined
match IntegerBinaryOp g Unchecked.(+) Unchecked.(+) Unchecked.(+) Unchecked.(+) Unchecked.(+) Unchecked.(+) Unchecked.(+) Unchecked.(+) t1 t2 with
| Some res -> res
| _ -> UnknownValue
| [ AI_sub ], [t1;t2], _ ->
// Note: each use of Unchecked.(+) gets instantiated at a different type and inlined
match IntegerBinaryOp g Unchecked.(-) Unchecked.(-) Unchecked.(-) Unchecked.(-) Unchecked.(-) Unchecked.(-) Unchecked.(-) Unchecked.(-) t1 t2 with
| Some res -> res
| _ -> UnknownValue
| [ AI_mul ], [a;b], _ -> (match IntegerBinaryOp g Unchecked.( * ) Unchecked.( * ) Unchecked.( * ) Unchecked.( * ) Unchecked.( * ) Unchecked.( * ) Unchecked.( * ) Unchecked.( * ) a b with Some res -> res | None -> UnknownValue)
| [ AI_and ], [a;b], _ -> (match IntegerBinaryOp g (&&&) (&&&) (&&&) (&&&) (&&&) (&&&) (&&&) (&&&) a b with Some res -> res | None -> UnknownValue)
| [ AI_or ], [a;b], _ -> (match IntegerBinaryOp g (|||) (|||) (|||) (|||) (|||) (|||) (|||) (|||) a b with Some res -> res | None -> UnknownValue)
| [ AI_xor ], [a;b], _ -> (match IntegerBinaryOp g (^^^) (^^^) (^^^) (^^^) (^^^) (^^^) (^^^) (^^^) a b with Some res -> res | None -> UnknownValue)
| [ AI_not ], [a], _ -> (match IntegerUnaryOp g (~~~) (~~~) (~~~) (~~~) (~~~) (~~~) (~~~) (~~~) a with Some res -> res | None -> UnknownValue)
| [ AI_neg ], [a], _ -> (match SignedIntegerUnaryOp g (~-) (~-) (~-) (~-) a with Some res -> res | None -> UnknownValue)
| [ AI_ceq ], [a;b], _ ->
match stripValue a, stripValue b with
| ConstValue(Const.Bool a1, _), ConstValue(Const.Bool a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.SByte a1, _), ConstValue(Const.SByte a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.Int16 a1, _), ConstValue(Const.Int16 a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.Int32 a1, _), ConstValue(Const.Int32 a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.Int64 a1, _), ConstValue(Const.Int64 a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.Char a1, _), ConstValue(Const.Char a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.Byte a1, _), ConstValue(Const.Byte a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.UInt16 a1, _), ConstValue(Const.UInt16 a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.UInt32 a1, _), ConstValue(Const.UInt32 a2, _) -> mkBoolVal g (a1 = a2)
| ConstValue(Const.UInt64 a1, _), ConstValue(Const.UInt64 a2, _) -> mkBoolVal g (a1 = a2)
| _ -> UnknownValue
| [ AI_clt ], [a;b], _ ->
match stripValue a, stripValue b with
| ConstValue(Const.Bool a1, _), ConstValue(Const.Bool a2, _) -> mkBoolVal g (a1 < a2)
| ConstValue(Const.Int32 a1, _), ConstValue(Const.Int32 a2, _) -> mkBoolVal g (a1 < a2)
| ConstValue(Const.Int64 a1, _), ConstValue(Const.Int64 a2, _) -> mkBoolVal g (a1 < a2)
| ConstValue(Const.SByte a1, _), ConstValue(Const.SByte a2, _) -> mkBoolVal g (a1 < a2)
| ConstValue(Const.Int16 a1, _), ConstValue(Const.Int16 a2, _) -> mkBoolVal g (a1 < a2)
| _ -> UnknownValue
| [ (AI_conv(DT_U1))], [a], [ty] when typeEquiv g ty g.byte_ty ->
match stripValue a with
| ConstValue(Const.SByte a, _) -> mkUInt8Val g (Unchecked.byte a)
| ConstValue(Const.Int16 a, _) -> mkUInt8Val g (Unchecked.byte a)
| ConstValue(Const.Int32 a, _) -> mkUInt8Val g (Unchecked.byte a)
| ConstValue(Const.Int64 a, _) -> mkUInt8Val g (Unchecked.byte a)
| ConstValue(Const.Byte a, _) -> mkUInt8Val g (Unchecked.byte a)
| ConstValue(Const.UInt16 a, _) -> mkUInt8Val g (Unchecked.byte a)
| ConstValue(Const.UInt32 a, _) -> mkUInt8Val g (Unchecked.byte a)
| ConstValue(Const.UInt64 a, _) -> mkUInt8Val g (Unchecked.byte a)
| _ -> UnknownValue
| [ (AI_conv(DT_U2))], [a], [ty] when typeEquiv g ty g.uint16_ty ->
match stripValue a with
| ConstValue(Const.SByte a, _) -> mkUInt16Val g (Unchecked.uint16 a)
| ConstValue(Const.Int16 a, _) -> mkUInt16Val g (Unchecked.uint16 a)
| ConstValue(Const.Int32 a, _) -> mkUInt16Val g (Unchecked.uint16 a)
| ConstValue(Const.Int64 a, _) -> mkUInt16Val g (Unchecked.uint16 a)
| ConstValue(Const.Byte a, _) -> mkUInt16Val g (Unchecked.uint16 a)
| ConstValue(Const.UInt16 a, _) -> mkUInt16Val g (Unchecked.uint16 a)
| ConstValue(Const.UInt32 a, _) -> mkUInt16Val g (Unchecked.uint16 a)
| ConstValue(Const.UInt64 a, _) -> mkUInt16Val g (Unchecked.uint16 a)
| _ -> UnknownValue
| [ (AI_conv(DT_U4))], [a], [ty] when typeEquiv g ty g.uint32_ty ->
match stripValue a with
| ConstValue(Const.SByte a, _) -> mkUInt32Val g (Unchecked.uint32 a)
| ConstValue(Const.Int16 a, _) -> mkUInt32Val g (Unchecked.uint32 a)
| ConstValue(Const.Int32 a, _) -> mkUInt32Val g (Unchecked.uint32 a)
| ConstValue(Const.Int64 a, _) -> mkUInt32Val g (Unchecked.uint32 a)
| ConstValue(Const.Byte a, _) -> mkUInt32Val g (Unchecked.uint32 a)
| ConstValue(Const.UInt16 a, _) -> mkUInt32Val g (Unchecked.uint32 a)
| ConstValue(Const.UInt32 a, _) -> mkUInt32Val g (Unchecked.uint32 a)
| ConstValue(Const.UInt64 a, _) -> mkUInt32Val g (Unchecked.uint32 a)
| _ -> UnknownValue
| [ (AI_conv(DT_U8))], [a], [ty] when typeEquiv g ty g.uint64_ty ->
match stripValue a with
| ConstValue(Const.SByte a, _) -> mkUInt64Val g (Unchecked.uint64 a)
| ConstValue(Const.Int16 a, _) -> mkUInt64Val g (Unchecked.uint64 a)
| ConstValue(Const.Int32 a, _) -> mkUInt64Val g (Unchecked.uint64 a)
| ConstValue(Const.Int64 a, _) -> mkUInt64Val g (Unchecked.uint64 a)
| ConstValue(Const.Byte a, _) -> mkUInt64Val g (Unchecked.uint64 a)
| ConstValue(Const.UInt16 a, _) -> mkUInt64Val g (Unchecked.uint64 a)
| ConstValue(Const.UInt32 a, _) -> mkUInt64Val g (Unchecked.uint64 a)
| ConstValue(Const.UInt64 a, _) -> mkUInt64Val g (Unchecked.uint64 a)
| _ -> UnknownValue
| [ (AI_conv(DT_I1))], [a], [ty] when typeEquiv g ty g.sbyte_ty ->
match stripValue a with
| ConstValue(Const.SByte a, _) -> mkInt8Val g (Unchecked.sbyte a)
| ConstValue(Const.Int16 a, _) -> mkInt8Val g (Unchecked.sbyte a)
| ConstValue(Const.Int32 a, _) -> mkInt8Val g (Unchecked.sbyte a)
| ConstValue(Const.Int64 a, _) -> mkInt8Val g (Unchecked.sbyte a)
| ConstValue(Const.Byte a, _) -> mkInt8Val g (Unchecked.sbyte a)
| ConstValue(Const.UInt16 a, _) -> mkInt8Val g (Unchecked.sbyte a)
| ConstValue(Const.UInt32 a, _) -> mkInt8Val g (Unchecked.sbyte a)
| ConstValue(Const.UInt64 a, _) -> mkInt8Val g (Unchecked.sbyte a)
| _ -> UnknownValue
| [ (AI_conv(DT_I2))], [a], [ty] when typeEquiv g ty g.int16_ty ->
match stripValue a with
| ConstValue(Const.Int32 a, _) -> mkInt16Val g (Unchecked.int16 a)
| ConstValue(Const.Int16 a, _) -> mkInt16Val g (Unchecked.int16 a)
| ConstValue(Const.SByte a, _) -> mkInt16Val g (Unchecked.int16 a)
| ConstValue(Const.Int64 a, _) -> mkInt16Val g (Unchecked.int16 a)
| ConstValue(Const.UInt32 a, _) -> mkInt16Val g (Unchecked.int16 a)
| ConstValue(Const.UInt16 a, _) -> mkInt16Val g (Unchecked.int16 a)
| ConstValue(Const.Byte a, _) -> mkInt16Val g (Unchecked.int16 a)
| ConstValue(Const.UInt64 a, _) -> mkInt16Val g (Unchecked.int16 a)
| _ -> UnknownValue
| [ (AI_conv(DT_I4))], [a], [ty] when typeEquiv g ty g.int32_ty ->
match stripValue a with
| ConstValue(Const.Int32 a, _) -> mkInt32Val g (Unchecked.int32 a)
| ConstValue(Const.Int16 a, _) -> mkInt32Val g (Unchecked.int32 a)
| ConstValue(Const.SByte a, _) -> mkInt32Val g (Unchecked.int32 a)
| ConstValue(Const.Int64 a, _) -> mkInt32Val g (Unchecked.int32 a)
| ConstValue(Const.UInt32 a, _) -> mkInt32Val g (Unchecked.int32 a)
| ConstValue(Const.UInt16 a, _) -> mkInt32Val g (Unchecked.int32 a)
| ConstValue(Const.Byte a, _) -> mkInt32Val g (Unchecked.int32 a)
| ConstValue(Const.UInt64 a, _) -> mkInt32Val g (Unchecked.int32 a)
| _ -> UnknownValue
| [ (AI_conv(DT_I8))], [a], [ty] when typeEquiv g ty g.int64_ty ->
match stripValue a with
| ConstValue(Const.Int32 a, _) -> mkInt64Val g (Unchecked.int64 a)
| ConstValue(Const.Int16 a, _) -> mkInt64Val g (Unchecked.int64 a)
| ConstValue(Const.SByte a, _) -> mkInt64Val g (Unchecked.int64 a)
| ConstValue(Const.Int64 a, _) -> mkInt64Val g (Unchecked.int64 a)
| ConstValue(Const.UInt32 a, _) -> mkInt64Val g (Unchecked.int64 a)
| ConstValue(Const.UInt16 a, _) -> mkInt64Val g (Unchecked.int64 a)
| ConstValue(Const.Byte a, _) -> mkInt64Val g (Unchecked.int64 a)
| ConstValue(Const.UInt64 a, _) -> mkInt64Val g (Unchecked.int64 a)
| _ -> UnknownValue
| [ AI_clt_un ], [a;b], [ty] when typeEquiv g ty g.bool_ty ->
match stripValue a, stripValue b with
| ConstValue(Const.Char a1, _), ConstValue(Const.Char a2, _) -> mkBoolVal g (a1 < a2)
| ConstValue(Const.Byte a1, _), ConstValue(Const.Byte a2, _) -> mkBoolVal g (a1 < a2)
| ConstValue(Const.UInt16 a1, _), ConstValue(Const.UInt16 a2, _) -> mkBoolVal g (a1 < a2)
| ConstValue(Const.UInt32 a1, _), ConstValue(Const.UInt32 a2, _) -> mkBoolVal g (a1 < a2)
| ConstValue(Const.UInt64 a1, _), ConstValue(Const.UInt64 a2, _) -> mkBoolVal g (a1 < a2)
| _ -> UnknownValue
| [ AI_cgt ], [a;b], [ty] when typeEquiv g ty g.bool_ty ->
match stripValue a, stripValue b with
| ConstValue(Const.SByte a1, _), ConstValue(Const.SByte a2, _) -> mkBoolVal g (a1 > a2)
| ConstValue(Const.Int16 a1, _), ConstValue(Const.Int16 a2, _) -> mkBoolVal g (a1 > a2)
| ConstValue(Const.Int32 a1, _), ConstValue(Const.Int32 a2, _) -> mkBoolVal g (a1 > a2)
| ConstValue(Const.Int64 a1, _), ConstValue(Const.Int64 a2, _) -> mkBoolVal g (a1 > a2)
| _ -> UnknownValue
| [ AI_cgt_un ], [a;b], [ty] when typeEquiv g ty g.bool_ty ->
match stripValue a, stripValue b with
| ConstValue(Const.Char a1, _), ConstValue(Const.Char a2, _) -> mkBoolVal g (a1 > a2)
| ConstValue(Const.Byte a1, _), ConstValue(Const.Byte a2, _) -> mkBoolVal g (a1 > a2)
| ConstValue(Const.UInt16 a1, _), ConstValue(Const.UInt16 a2, _) -> mkBoolVal g (a1 > a2)
| ConstValue(Const.UInt32 a1, _), ConstValue(Const.UInt32 a2, _) -> mkBoolVal g (a1 > a2)
| ConstValue(Const.UInt64 a1, _), ConstValue(Const.UInt64 a2, _) -> mkBoolVal g (a1 > a2)
| _ -> UnknownValue
| [ AI_shl ], [a;n], _ ->
match stripValue a, stripValue n with
| ConstValue(Const.Int64 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 63 -> (mkInt64Val g (a <<< n))
| ConstValue(Const.Int32 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 31 -> (mkInt32Val g (a <<< n))
| ConstValue(Const.Int16 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 15 -> (mkInt16Val g (a <<< n))
| ConstValue(Const.SByte a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 7 -> (mkInt8Val g (a <<< n))
| ConstValue(Const.UInt64 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 63 -> (mkUInt64Val g (a <<< n))
| ConstValue(Const.UInt32 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 31 -> (mkUInt32Val g (a <<< n))
| ConstValue(Const.UInt16 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 15 -> (mkUInt16Val g (a <<< n))
| ConstValue(Const.Byte a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 7 -> (mkUInt8Val g (a <<< n))
| _ -> UnknownValue
| [ AI_shr ], [a;n], _ ->
match stripValue a, stripValue n with
| ConstValue(Const.SByte a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 7 -> (mkInt8Val g (a >>> n))
| ConstValue(Const.Int16 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 15 -> (mkInt16Val g (a >>> n))
| ConstValue(Const.Int32 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 31 -> (mkInt32Val g (a >>> n))
| ConstValue(Const.Int64 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 63 -> (mkInt64Val g (a >>> n))
| _ -> UnknownValue
| [ AI_shr_un ], [a;n], _ ->
match stripValue a, stripValue n with
| ConstValue(Const.Byte a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 7 -> (mkUInt8Val g (a >>> n))
| ConstValue(Const.UInt16 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 15 -> (mkUInt16Val g (a >>> n))
| ConstValue(Const.UInt32 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 31 -> (mkUInt32Val g (a >>> n))
| ConstValue(Const.UInt64 a, _), ConstValue(Const.Int32 n, _) when n >= 0 && n <= 63 -> (mkUInt64Val g (a >>> n))
| _ -> UnknownValue
// Retypings using IL asm "" are quite common in prim-types.fs
// Sometimes these are only to get the primitives to pass the type checker.
// Here we check for retypings from know values to known types.
// We're conservative not to apply any actual data-changing conversions here.
| [ ], [v], [ty] ->
match stripValue v with
| ConstValue(Const.Bool a, _) ->
if typeEquiv g ty g.bool_ty then v
elif typeEquiv g ty g.sbyte_ty then mkInt8Val g (if a then 1y else 0y)
elif typeEquiv g ty g.int16_ty then mkInt16Val g (if a then 1s else 0s)
elif typeEquiv g ty g.int32_ty then mkInt32Val g (if a then 1 else 0)
elif typeEquiv g ty g.byte_ty then mkUInt8Val g (if a then 1uy else 0uy)
elif typeEquiv g ty g.uint16_ty then mkUInt16Val g (if a then 1us else 0us)
elif typeEquiv g ty g.uint32_ty then mkUInt32Val g (if a then 1u else 0u)
else UnknownValue
| ConstValue(Const.SByte a, _) ->
if typeEquiv g ty g.sbyte_ty then v
elif typeEquiv g ty g.int16_ty then mkInt16Val g (Unchecked.int16 a)
elif typeEquiv g ty g.int32_ty then mkInt32Val g (Unchecked.int32 a)
else UnknownValue
| ConstValue(Const.Byte a, _) ->
if typeEquiv g ty g.byte_ty then v
elif typeEquiv g ty g.uint16_ty then mkUInt16Val g (Unchecked.uint16 a)
elif typeEquiv g ty g.uint32_ty then mkUInt32Val g (Unchecked.uint32 a)
else UnknownValue
| ConstValue(Const.Int16 a, _) ->
if typeEquiv g ty g.int16_ty then v
elif typeEquiv g ty g.int32_ty then mkInt32Val g (Unchecked.int32 a)
else UnknownValue
| ConstValue(Const.UInt16 a, _) ->
if typeEquiv g ty g.uint16_ty then v
elif typeEquiv g ty g.uint32_ty then mkUInt32Val g (Unchecked.uint32 a)
else UnknownValue
| ConstValue(Const.Int32 a, _) ->
if typeEquiv g ty g.int32_ty then v
elif typeEquiv g ty g.uint32_ty then mkUInt32Val g (Unchecked.uint32 a)
else UnknownValue
| ConstValue(Const.UInt32 a, _) ->
if typeEquiv g ty g.uint32_ty then v
elif typeEquiv g ty g.int32_ty then mkInt32Val g (Unchecked.int32 a)
else UnknownValue
| ConstValue(Const.Int64 a, _) ->
if typeEquiv g ty g.int64_ty then v
elif typeEquiv g ty g.uint64_ty then mkUInt64Val g (Unchecked.uint64 a)
else UnknownValue
| ConstValue(Const.UInt64 a, _) ->
if typeEquiv g ty g.uint64_ty then v
elif typeEquiv g ty g.int64_ty then mkInt64Val g (Unchecked.int64 a)
else UnknownValue
| _ -> UnknownValue
| _ -> UnknownValue
//-------------------------------------------------------------------------
// Size constants and combinators
//-------------------------------------------------------------------------
let [<Literal>] localVarSize = 1
let inline AddTotalSizes l = l |> List.sumBy (fun x -> x.TotalSize)
let inline AddFunctionSizes l = l |> List.sumBy (fun x -> x.FunctionSize)
//-------------------------------------------------------------------------
// opt list/array combinators - zipping (_, _) return type
//-------------------------------------------------------------------------
let inline OrEffects l = List.exists (fun x -> x.HasEffect) l
let inline OrTailcalls l = List.exists (fun x -> x.MightMakeCriticalTailcall) l
let OptimizeList f l = l |> List.map f |> List.unzip
let NoExprs : (Expr list * list<Summary<ExprValueInfo>>) = [], []
//-------------------------------------------------------------------------
// Common ways of building new value infos
//-------------------------------------------------------------------------
let CombineValueInfos einfos res =
{ TotalSize = AddTotalSizes einfos
FunctionSize = AddFunctionSizes einfos
HasEffect = OrEffects einfos
MightMakeCriticalTailcall = OrTailcalls einfos
Info = res }
let CombineValueInfosUnknown einfos = CombineValueInfos einfos UnknownValue
//-------------------------------------------------------------------------
// Hide information because of a signature
//-------------------------------------------------------------------------
let AbstractLazyModulInfoByHiding isAssemblyBoundary mhi =
// The freevars and FreeTyvars can indicate if the non-public (hidden) items have been used.
// Under those checks, the further hidden* checks may be subsumed (meaning, not required anymore).
let hiddenTycon, hiddenTyconRepr, hiddenVal, hiddenRecdField, hiddenUnionCase =
Zset.memberOf mhi.mhiTycons,
Zset.memberOf mhi.mhiTyconReprs,
Zset.memberOf mhi.mhiVals,
Zset.memberOf mhi.mhiRecdFields,
Zset.memberOf mhi.mhiUnionCases
let rec abstractExprInfo ivalue =
match ivalue with
(* Check for escaping value. Revert to old info if possible *)
| ValValue (vref2, detail) ->
let detail' = abstractExprInfo detail
let v2 = vref2.Deref
let tyvars = freeInVal CollectAll v2
if
(isAssemblyBoundary && not (freeTyvarsAllPublic tyvars)) ||
Zset.exists hiddenTycon tyvars.FreeTycons ||
hiddenVal v2
then detail'
else ValValue (vref2, detail')
// Check for escape in lambda
| CurriedLambdaValue (_, _, _, expr, _) | ConstExprValue(_, expr) when
(let fvs = freeInExpr CollectAll expr
(isAssemblyBoundary && not (freeVarsAllPublic fvs)) ||
Zset.exists hiddenVal fvs.FreeLocals ||
Zset.exists hiddenTycon fvs.FreeTyvars.FreeTycons ||