[Polly] Fix typos discovered by codespell (#124545)

Patch created using the following command line:
```bash
codespell polly --skip="*.pdf,polly/lib/External/*" --write-changes \
  --ignore-words-list=couter,createor,distribues,doble,identty,indention,indx,olt,ore,padd,sais,te,theses
```

polly/docs/Architecture.rst

@@ -27,7 +27,7 @@ executed in the so-called **Inliner cycle**, This is again a set of **Scalar
 Simplification** passes, a set of **Simple Loop Optimizations**, and the
 **Inliner** itself. Even though these passes make up the majority of the LLVM
 pass pipeline, the primary goal of these passes is still canonicalization
-without loosing semantic information that complicates later analysis. As part of
+without losing semantic information that complicates later analysis. As part of
 the inliner cycle, the LLVM inliner step-by-step tries to inline functions, runs
 canonicalization passes to exploit newly exposed simplification opportunities,
 and then tries to inline the further simplified functions. Some simple loop

polly/docs/doxygen.cfg.in

@@ -1066,7 +1066,7 @@ HTML_STYLESHEET        =
 # defined cascading style sheet that is included after the standard style sheets
 # created by doxygen. Using this option one can overrule certain style aspects.
 # This is preferred over using HTML_STYLESHEET since it does not replace the
-# standard style sheet and is therefor more robust against future updates.
+# standard style sheet and is therefore more robust against future updates.
 # Doxygen will copy the style sheet file to the output directory. For an example
 # see the documentation.
 # This tag requires that the tag GENERATE_HTML is set to YES.
@@ -1950,7 +1950,7 @@ PREDEFINED             =
 EXPAND_AS_DEFINED      =
 
 # If the SKIP_FUNCTION_MACROS tag is set to YES then doxygen's preprocessor will
-# remove all refrences to function-like macros that are alone on a line, have an
+# remove all references to function-like macros that are alone on a line, have an
 # all uppercase name, and do not end with a semicolon. Such function macros are
 # typically used for boiler-plate code, and will confuse the parser if not
 # removed.

polly/include/polly/CodeGen/RuntimeDebugBuilder.h

@@ -118,7 +118,7 @@ struct RuntimeDebugBuilder {
 
   /// Call fflush
   ///
-  /// @parma Builder The builder used to insert the code.
+  /// @param Builder The builder used to insert the code.
   static void createFlush(PollyIRBuilder &Builder);
 };
 } // namespace polly

polly/include/polly/DependenceInfo.h

@@ -211,7 +211,7 @@ struct DependenceAnalysis final : public AnalysisInfoMixin<DependenceAnalysis> {
 
     /// Invalidate the dependence information and recompute it when needed
     /// again.
-    /// May be required when the underlaying Scop was changed in a way that
+    /// May be required when the underlying Scop was changed in a way that
     /// would add new dependencies (e.g. between new statement instances
     /// insierted into the SCoP) or intentionally breaks existing ones. It is
     /// not required when updating the schedule that conforms the existing
@@ -251,7 +251,7 @@ class DependenceInfo final : public ScopPass {
   const Dependences &recomputeDependences(Dependences::AnalysisLevel Level);
 
   /// Invalidate the dependence information and recompute it when needed again.
-  /// May be required when the underlaying Scop was changed in a way that would
+  /// May be required when the underlying Scop was changed in a way that would
   /// add new dependencies (e.g. between new statement instances insierted into
   /// the SCoP) or intentionally breaks existing ones. It is not required when
   /// updating the schedule that conforms the existing dependencies.

polly/include/polly/ScopInfo.h

@@ -1494,7 +1494,7 @@ class ScopStmt final {
   /// @param Access  The access to add.
   /// @param Prepend If true, will add @p Access before all other instructions
   ///                (instead of appending it).
-  void addAccess(MemoryAccess *Access, bool Preprend = false);
+  void addAccess(MemoryAccess *Access, bool Prepend = false);
 
   /// Remove a MemoryAccess from this statement.
   ///

polly/include/polly/Support/SCEVAffinator.h

@@ -50,7 +50,7 @@ class SCEVAffinator final : public llvm::SCEVVisitor<SCEVAffinator, PWACtx> {
   /// Check an <nsw> AddRec for the loop @p L is cached.
   bool hasNSWAddRecForLoop(llvm::Loop *L) const;
 
-  /// Return the LoopInfo used by thi object.
+  /// Return the LoopInfo used by the object.
   llvm::LoopInfo *getLI() const { return &LI; }
 
 private:

polly/include/polly/Support/ScopHelper.h

@@ -83,7 +83,7 @@ using RecordedAssumptionsTy = llvm::SmallVector<Assumption, 8>;
 ///
 /// This function will add the assumption to the RecordedAssumptions. This
 /// collection will be added (@see addAssumption) to the assumed context once
-/// all paramaters are known and the context is fully built.
+/// all parameters are known and the context is fully built.
 ///
 /// @param RecordedAssumption container which keeps all recorded assumptions.
 /// @param Kind The assumption kind describing the underlying cause.
@@ -132,7 +132,7 @@ using BoxedLoopsSetTy = llvm::SetVector<const llvm::Loop *>;
 /// isNull(), isInstruction(), isLoad(), isStore(), ..., isMemTransferInst(),
 /// operator bool(), operator!()
 ///
-/// The functions isa, cast, cast_or_null, dyn_cast are modeled te resemble
+/// The functions isa, cast, cast_or_null, dyn_cast are modeled to resemble
 /// those from llvm/Support/Casting.h. Partial template function specialization
 /// is currently not supported in C++ such that those cannot be used directly.
 /// (llvm::isa could, but then llvm:cast etc. would not have the expected

polly/lib/Analysis/ScopBuilder.cpp

@@ -2522,7 +2522,7 @@ combineReductionType(MemoryAccess::ReductionType RT0,
   return MemoryAccess::RT_NONE;
 }
 
-///  True if @p AllAccs intersects with @p MemAccs execpt @p LoadMA and @p
+///  True if @p AllAccs intersects with @p MemAccs except @p LoadMA and @p
 ///  StoreMA
 bool hasIntersectingAccesses(isl::set AllAccs, MemoryAccess *LoadMA,
                              MemoryAccess *StoreMA, isl::set Domain,

polly/lib/Analysis/ScopDetectionDiagnostic.cpp

@@ -71,7 +71,7 @@ static Statistic RejectStatistics[] = {
     SCOP_STAT(LoopOnlySomeLatches, "Not all loop latches in scop"),
     SCOP_STAT(FuncCall, "Function call with side effects"),
     SCOP_STAT(NonSimpleMemoryAccess,
-              "Compilated access semantics (volatile or atomic)"),
+              "Complicated access semantics (volatile or atomic)"),
     SCOP_STAT(Alias, "Base address aliasing"),
     SCOP_STAT(Other, ""),
     SCOP_STAT(IntToPtr, "Integer to pointer conversions"),

polly/lib/CodeGen/IslNodeBuilder.cpp

@@ -1159,7 +1159,7 @@ bool IslNodeBuilder::preloadInvariantEquivClass(
   // For an equivalence class of invariant loads we pre-load the representing
   // element with the unified execution context. However, we have to map all
   // elements of the class to the one preloaded load as they are referenced
-  // during the code generation and therefor need to be mapped.
+  // during the code generation and therefore need to be mapped.
   const MemoryAccessList &MAs = IAClass.InvariantAccesses;
   if (MAs.empty())
     return true;

polly/lib/CodeGen/Utils.cpp

@@ -46,7 +46,7 @@ static BasicBlock *splitEdge(BasicBlock *Prev, BasicBlock *Succ,
   // llvm::SplitCriticalEdge is more efficient than
   // llvm::SplitBlockPredecessors, which is more general. In the future we might
   // either modify llvm::SplitCriticalEdge to allow skipping the critical edge
-  // check; or Copy&Pase it here.
+  // check; or Copy&Paste it here.
   BasicBlock *MiddleBlock = SplitBlockPredecessors(
       Succ, ArrayRef<BasicBlock *>(Prev), Suffix, DT, LI);
 

polly/lib/Support/SCEVAffinator.cpp

@@ -502,7 +502,7 @@ PWACtx SCEVAffinator::visitUDivExpr(const SCEVUDivExpr *Expr) {
   }
 
   // TODO: One can represent the dividend as piece-wise function to be more
-  //       precise but therefor a heuristic is needed.
+  //       precise but therefore a heuristic is needed.
 
   // Assume a non-negative dividend.
   takeNonNegativeAssumption(DividendPWAC, RecordedAssumptions);

polly/lib/Support/ScopHelper.cpp

@@ -456,7 +456,7 @@ struct ScopExpander final : SCEVVisitor<ScopExpander, const SCEV *> {
 
     // FIXME: This emits a SCEV for GenSE (since GenLRepl will refer to the
     // induction variable of a generated loop), so we should not use SCEVVisitor
-    // with it. Howver, it still contains references to the SCoP region.
+    // with it. However, it still contains references to the SCoP region.
     return visit(Evaluated);
   }
   ///}

polly/lib/Transform/DeLICM.cpp

@@ -1290,7 +1290,7 @@ class DeLICMImpl final : public ZoneAlgorithm {
           continue;
         }
 
-        // Check for more than one element acces per statement instance.
+        // Check for more than one element access per statement instance.
         // Currently we expect write accesses to be functional, eg. disallow
         //
         //   { Stmt[0] -> [i] : 0 <= i < 2 }

polly/lib/Transform/ManualOptimizer.cpp

@@ -149,7 +149,7 @@ class SearchTransformVisitor final
   // transformed in innermost-first order.
   isl::schedule Result;
 
-  /// Check wether a schedule after a  transformation is legal. Return the old
+  /// Check whether a schedule after a  transformation is legal. Return the old
   /// schedule without the transformation.
   isl::schedule
   checkDependencyViolation(llvm::MDNode *LoopMD, llvm::Value *CodeRegion,

polly/lib/Transform/MatmulOptimizer.cpp

@@ -1759,7 +1759,7 @@ static bool isTCPattern(isl::schedule_node Node, const Dependences *D,
   //
   // For example, this covers the matrix multiplication pattern after a full
   // run of -polly-optree and -polly-delicm, where the write access is not
-  // through the original memory access, but trough a PHI node that was
+  // through the original memory access, but through a PHI node that was
   // delicmed. Subsequently, such band nodes will be replaced by a single band
   // node.
   //

polly/lib/Transform/ScheduleOptimizer.cpp

@@ -771,7 +771,7 @@ static void runIslScheduleOptimizer(
     return;
   }
 
-  // Apply ISL's algorithm only if not overriden by the user. Note that
+  // Apply ISL's algorithm only if not overridden by the user. Note that
   // post-rescheduling optimizations (tiling, pattern-based, prevectorization)
   // rely on the coincidence/permutable annotations on schedule tree bands that
   // are added by the rescheduling analyzer. Therefore, disabling the

polly/lib/Transform/ScheduleTreeTransform.cpp

@@ -572,13 +572,13 @@ class BandCollapseRewriter final
     isl::schedule_node_band Band = RootBand;
     isl::ctx Ctx = Band.ctx();
 
-    // Do not merge permutable band to avoid loosing the permutability property.
+    // Do not merge permutable band to avoid losing the permutability property.
     // Cannot collapse even two permutable loops, they might be permutable
     // individually, but not necassarily across.
     if (unsignedFromIslSize(Band.n_member()) > 1u && Band.permutable())
       return getBase().visitBand(Band);
 
-    // Find collapsable bands.
+    // Find collapsible bands.
     SmallVector<isl::schedule_node_band> Nest;
     int NumTotalLoops = 0;
     isl::schedule_node Body;
@@ -884,10 +884,10 @@ class GreedyFusionRewriter final
       collectPotentiallyFusableBands(Child, Bands, Child);
     }
 
-    // Direct children that had at least one of its decendants fused.
+    // Direct children that had at least one of its descendants fused.
     SmallDenseSet<isl_schedule_node *, 4> ChangedDirectChildren;
 
-    // Fuse neigboring bands until reaching the end of candidates.
+    // Fuse neighboring bands until reaching the end of candidates.
     int i = 0;
     while (i + 1 < (int)Bands.size()) {
       isl::schedule Fused =

polly/test/CodeGen/LoopParallelMD/do_not_mutate_debug_info.ll

@@ -1,4 +1,4 @@
-; This test checks that we do not accidently mutate the debug info when
+; This test checks that we do not accidentally mutate the debug info when
 ; inserting loop parallel metadata.
 ; RUN: opt %loadNPMPolly < %s  -S -polly -passes=polly-codegen -polly-ast-detect-parallel | FileCheck %s
 ; CHECK-NOT: !7 = !{!7}

polly/test/CodeGen/multiple-codegens.ll

@@ -6,7 +6,7 @@
 ; RegionPassManager. -polly-codegen must not reuse the -polly-ast analysis the
 ; was created for the first -polly-scops pass.
 ; The current solution is that only the first -polly-codegen is allowed to
-; generate code, the second detects it is re-using an IslAst that belongs to a
+; generate code, the second detects it is reusing an IslAst that belongs to a
 ; different ScopInfo.
 ;
 ; int a, b, c;

polly/test/CodeGen/multiple-scops-in-a-row.ll

@@ -6,7 +6,7 @@
 
 ; We explicitly check here that the second scop is not code generated. Later
 ; improvements may make this possible (e.g., Polly gaining support for
-; parameteric conditional expressions or a changed code generation order).
+; parametric conditional expressions or a changed code generation order).
 ; However, in case this happens, we want to ensure this test case is been
 ; reasoned about and updated accordingly.
 

polly/test/CodeGen/reduction_2.ll

@@ -88,7 +88,7 @@ if.end:                                           ; preds = %if.then, %for.end
 declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i32, i1) nounwind
 
 ; This is a negative test. We can prove that RED[0] in the conditional after
-; the loop is dereferencable and consequently expand the SCoP from the
+; the loop is dereferenceable and consequently expand the SCoP from the
 ; loop to include the conditional. However, during SCoP generation we realize
 ; that, while RED[0] is invariant, it is written to as part of the same scop
 ; and can consequently not be hoisted. Hence, we invalidate the scop.

polly/test/CodeGen/scalar-store-from-same-bb.ll

@@ -2,7 +2,7 @@
 ; RUN: -passes=polly-codegen -S < %s | FileCheck %s
 
 ; This test ensures that the expression N + 1 that is stored in the phi-node
-; alloca, is directly computed and not incorrectly transfered through memory.
+; alloca, is directly computed and not incorrectly transferred through memory.
 
 ; CHECK: store i64 [[REG:%.*]], ptr %res.phiops
 ; CHECK: [[REG]] = add i64 %N, 1

polly/test/CodeGen/test-invalid-operands-for-select.ll

@@ -2,7 +2,7 @@
 ;
 ; Check that we do not crash as described here: http://llvm.org/PR21167
 ;
-; In case the pieceweise affine function used to create an isl_ast_expr
+; In case the piecewise affine function used to create an isl_ast_expr
 ; had empty cases (e.g., with contradicting constraints on the
 ; parameters), it was possible that the condition of the isl_ast_expr
 ; select was not a comparison but a constant (thus of type i64).

polly/test/DeLICM/load-in-cond-inf-loop.ll

@@ -1,6 +1,6 @@
 ; RUN: opt %loadNPMPolly '-passes=print<polly-delicm>' -disable-output < %s | FileCheck %s
 
-; When %b is 0, %for.body13 is an infite loop. In this case the loaded
+; When %b is 0, %for.body13 is an infinite loop. In this case the loaded
 ; value %1 is not used anywhere.
 ; This is a problem when DeLICM tries to map %1 to %arrayidx16 because
 ; %1 has no corresponding when %b == 0 and therefore hat no location

polly/test/DeLICM/pr41656.ll

@@ -4,7 +4,7 @@
 ;
 ; This test case has an InvalidContext such that part of the predecessors
 ; of for.body.us.i lie within the invalid context. This causes a
-; consistency check withing the invalid context of PR41656 to fail.
+; consistency check within the invalid context of PR41656 to fail.
 ;
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 

polly/test/DeLICM/pr48783.ll

@@ -4,7 +4,7 @@
 ;
 ; PHI predecessors of statement instances can only be reliably derived in defined behaviour situations. In this case, the inner loop's counter would overflow when its upper bound (%call24) is lower than its lower bound (2). However, due to the nsw flag, this would be undefined behavior and therefore not added to any runtime-check context, but to the defined-behaviour context.
 ;
-; Dereived from test case pr41656.ll
+; Derived from test case pr41656.ll
 ;
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 

polly/test/DeLICM/reject_outofquota.ll

@@ -66,7 +66,7 @@ return:
 ; CHECK: maximal number of operations exceeded during zone analysis
 
 ; Check that even if the quota was exceeded in DeLICM, DependenceInfo is still
-; successfull since it uses a different operations counter.
+; successful since it uses a different operations counter.
 ;
 ; DEP:     RAW dependences:
 ; DEP-NOT:        n/a

polly/test/IstAstInfo/reduction_modulo_schedule_multiple_dimensions_2.ll

@@ -1,6 +1,6 @@
 ; RUN: opt %loadNPMPolly '-passes=polly-import-jscop,print<polly-ast>' -polly-ast-detect-parallel -disable-output < %s | FileCheck %s
 ;
-; Verify that the outer dimension doesnt't carry reduction dependences
+; Verify that the outer dimension doesn't carry reduction dependences
 ;
 ; CHECK-NOT:#pragma known-parallel reduction
 ; CHECK:    #pragma known-parallel

polly/test/IstAstInfo/reduction_modulo_schedule_multiple_dimensions_3.ll

@@ -1,6 +1,6 @@
 ; RUN: opt %loadNPMPolly '-passes=polly-import-jscop,print<polly-ast>' -polly-ast-detect-parallel -disable-output < %s | FileCheck %s
 ;
-; Verify that the outer dimension doesnt't carry reduction dependences
+; Verify that the outer dimension doesn't carry reduction dependences
 ;
 ; CHECK-NOT:#pragma known-parallel reduction
 ; CHECK:    #pragma known-parallel

polly/test/IstAstInfo/reduction_modulo_schedule_multiple_dimensions_4.ll

@@ -1,6 +1,6 @@
 ; RUN: opt %loadNPMPolly '-passes=polly-import-jscop,print<polly-ast>' -polly-ast-detect-parallel -disable-output < %s | FileCheck %s
 ;
-; Verify that the outer dimension doesnt't carry reduction dependences
+; Verify that the outer dimension doesn't carry reduction dependences
 ;
 ; CHECK-NOT:#pragma known-parallel reduction
 ; CHECK:    #pragma known-parallel

polly/test/ScheduleOptimizer/pattern-matching-based-opts-after-delicm.ll

@@ -7,7 +7,7 @@
 
 ; Check that the pattern matching detects the matrix multiplication pattern
 ; after a full run of -polly-optree and -polly-delicm, where the write access
-; is not through the original memory access, but trough a PHI node that was
+; is not through the original memory access, but through a PHI node that was
 ; delicmed. This test covers the polybench 2mm and 3mm cases.
 ;
 ; This test case generates the following schedule, which contains filters:

polly/test/ScheduleOptimizer/pattern-matching-based-opts-after-delicm_2.ll

@@ -5,7 +5,7 @@
 ;
 ; Check that the pattern matching detects the tensor contraction pattern
 ; after a full run of -polly-delicm. This test case generates the following
-; schedule, which contans two band nodes. Without DeLICM two statement are
+; schedule, which contains two band nodes. Without DeLICM two statement are
 ; generated.
 ;
 ; domain: "{ Stmt5[i0, i1, i2, i3, i4, i5] : 0 <= i0 <= 31 and 0 <= i1 <= 31 and

polly/test/ScopDetect/scev_remove_max.ll

@@ -1,6 +1,6 @@
 ; RUN: opt %loadNPMPolly '-passes=print<polly-detect>' < %s
 
-; This test case helps to determine wether SCEVRemoveMax::remove produces
+; This test case helps to determine whether SCEVRemoveMax::remove produces
 ; an infinite loop and a segmentation fault, if it processes, for example,
 ; '((-1 + (-1 * %b1)) umax {(-1 + (-1 * %yStart)),+,-1}<%.preheader>)'.
 ;

polly/test/ScopDetectionDiagnostics/ReportLoopHasNoExit.ll

@@ -1,7 +1,7 @@
 ; XFAIL: *
 
 ; The test case stopped making sense after r310940 that added infinite loops to
-; the PostDominatorTree. Infinite loops are postdominated ony by the virtual
+; the PostDominatorTree. Infinite loops are postdominated only by the virtual
 ; root, which causes them not to appear in regions in ScopDetection anymore.
 
 ; RUN: opt %loadNPMPolly -pass-remarks-missed="polly-detect" -polly-allow-nonaffine-loops '-passes=print<polly-detect>' -disable-output < %s 2>&1 | FileCheck %s

polly/test/ScopInfo/NonAffine/non_affine_loop_used_later.ll

@@ -1,7 +1,7 @@
 ; RUN: opt %loadNPMPolly -polly-allow-nonaffine -polly-allow-nonaffine-branches -polly-allow-nonaffine-loops                                                                        '-passes=print<polly-detect>,print<polly-function-scops>' -disable-output < %s 2>&1 | FileCheck %s
 ; RUN: opt %loadNPMPolly -polly-allow-nonaffine -polly-allow-nonaffine-branches -polly-allow-nonaffine-loops -polly-unprofitable-scalar-accs=true -polly-process-unprofitable=false '-passes=print<polly-detect>,print<polly-function-scops>' -disable-output < %s 2>&1 | FileCheck %s --check-prefix=PROFIT
 ;
-; Verify that we over approximate the read acces of A[j] in the last statement as j is
+; Verify that we over approximate the read access of A[j] in the last statement as j is
 ; computed in a non-affine loop we do not model.
 ;
 ; CHECK:      Function: f

polly/test/ScopInfo/allow-all-parameters-dereferencable.ll

@@ -28,7 +28,7 @@
 ; CODE-RTC-NEXT: br i1 %{{[a-zA-Z0-9\.]*}}, label %polly.preload.exec, label %polly.preload.merge
 
 ; Check that we don't generate a runtime check because we treat all
-; parameters as dereferencable.
+; parameters as dereferenceable.
 ; CODE-NOT: polly.preload.cond:                               ; preds = %polly.preload.begin
 ; CODE-NOT: br i1 %{{r1:[a-zA-Z0-9]*}}, label %polly.preload.exec, label %polly.preload.merge
 

polly/test/ScopInfo/invariant_same_loop_bound_multiple_times-1.ll

@@ -1,7 +1,7 @@
 ; RUN: opt %loadNPMPolly '-passes=print<polly-function-scops>' -polly-invariant-load-hoisting=true -disable-output < %s 2>&1 | FileCheck %s
 ;
 ; Verify that we only have one parameter and one invariant load for all
-; three loads that occure in the region but actually access the same
+; three loads that occur in the region but actually access the same
 ; location. Also check that the execution context is the most generic
 ; one, e.g., here the universal set.
 ;