[clang] Use llvm::append_range (NFC) (#136256)

This patch replaces:

  llvm::copy(Src, std::back_inserter(Dst));

with:

  llvm::append_range(Dst, Src);

for breavity.

One side benefit is that llvm::append_range eventually calls
llvm::SmallVector::reserve if Dst is of llvm::SmallVector.

Author: kazutakahirata

clang/lib/CodeGen/Targets/AArch64.cpp

@@ -699,7 +699,7 @@ bool AArch64ABIInfo::passAsPureScalableType(
       return false;
 
     for (uint64_t I = 0; I < NElt; ++I)
-      llvm::copy(EltCoerceToSeq, std::back_inserter(CoerceToSeq));
+      llvm::append_range(CoerceToSeq, EltCoerceToSeq);
 
     NVec += NElt * NV;
     NPred += NElt * NP;
@@ -818,7 +818,7 @@ void AArch64ABIInfo::flattenType(
     flattenType(AT->getElementType(), EltFlattened);
 
     for (uint64_t I = 0; I < NElt; ++I)
-      llvm::copy(EltFlattened, std::back_inserter(Flattened));
+      llvm::append_range(Flattened, EltFlattened);
     return;
   }
 

clang/lib/Driver/XRayArgs.cpp

@@ -157,7 +157,7 @@ XRayArgs::XRayArgs(const ToolChain &TC, const ArgList &Args) {
   // Get the list of modes we want to support.
   auto SpecifiedModes = Args.getAllArgValues(options::OPT_fxray_modes);
   if (SpecifiedModes.empty())
-    llvm::copy(XRaySupportedModes, std::back_inserter(Modes));
+    llvm::append_range(Modes, XRaySupportedModes);
   else
     for (const auto &Arg : SpecifiedModes) {
       // Parse CSV values for -fxray-modes=...
@@ -167,7 +167,7 @@ XRayArgs::XRayArgs(const ToolChain &TC, const ArgList &Args) {
         if (M == "none")
           Modes.clear();
         else if (M == "all")
-          llvm::copy(XRaySupportedModes, std::back_inserter(Modes));
+          llvm::append_range(Modes, XRaySupportedModes);
         else
           Modes.push_back(std::string(M));
     }

clang/lib/Sema/SemaConcept.cpp

@@ -2012,8 +2012,8 @@ FormulaType SubsumptionChecker::Normalize(const NormalizedConstraint &NC) {
     for (const auto &RTransform : Right) {
       Clause Combined;
       Combined.reserve(LTransform.size() + RTransform.size());
-      llvm::copy(LTransform, std::back_inserter(Combined));
-      llvm::copy(RTransform, std::back_inserter(Combined));
+      llvm::append_range(Combined, LTransform);
+      llvm::append_range(Combined, RTransform);
       Add(std::move(Combined));
     }
   }

clang/lib/Sema/SemaSYCL.cpp

@@ -135,7 +135,7 @@ void SemaSYCL::deepTypeCheckForDevice(SourceLocation UsedAt,
       // When nullptr is discovered, this means we've gone back up a level, so
       // the history should be cleaned.
       StackForRecursion.push_back(nullptr);
-      llvm::copy(RecDecl->fields(), std::back_inserter(StackForRecursion));
+      llvm::append_range(StackForRecursion, RecDecl->fields());
     }
   } while (!StackForRecursion.empty());
 }

clang/tools/clang-installapi/ClangInstallAPI.cpp

@@ -59,7 +59,7 @@ static bool runFrontend(StringRef ProgName, Twine Label, bool Verbose,
   // headers.
   std::vector<std::string> Args = {ProgName.data(), "-target",
                                    Ctx.Slice->getTriple().str().c_str()};
-  llvm::copy(InitialArgs, std::back_inserter(Args));
+  llvm::append_range(Args, InitialArgs);
   Args.push_back(InputFile);
 
   // Create & run invocation.

clang/tools/clang-installapi/Options.cpp

@@ -691,7 +691,7 @@ Options::processAndFilterOutInstallAPIOptions(ArrayRef<const char *> Args) {
     if (A->getOption().getID() > (unsigned)OPT_UNKNOWN) {
       ClangDriverArgs.push_back(A->getSpelling().data());
     } else
-      llvm::copy(A->getValues(), std::back_inserter(ClangDriverArgs));
+      llvm::append_range(ClangDriverArgs, A->getValues());
   }
   return ClangDriverArgs;
 }
@@ -751,7 +751,7 @@ Options::Options(DiagnosticsEngine &Diag, FileManager *FM,
     if (A->isClaimed())
       continue;
     FrontendArgs.emplace_back(A->getSpelling());
-    llvm::copy(A->getValues(), std::back_inserter(FrontendArgs));
+    llvm::append_range(FrontendArgs, A->getValues());
   }
 }
 

clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp

@@ -541,7 +541,7 @@ Expected<StringRef> clang(ArrayRef<StringRef> InputFiles, const ArgList &Args,
       else
         Arg->render(Args, LinkerArgs);
     }
-    llvm::copy(LinkerArgs, std::back_inserter(CmdArgs));
+    llvm::append_range(CmdArgs, LinkerArgs);
   }
 
   // Pass on -mllvm options to the linker invocation.