diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
--- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
+++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
@@ -491,6 +491,14 @@
   if (!StatsFile.empty())
     CmdArgs.push_back(
         Args.MakeArgString(Twine("-plugin-opt=stats-file=") + StatsFile));
+
+  // Pass vector library setting for LTO-time vectorization
+  if (Arg *A = Args.getLastArg(options::OPT_fveclib)) {
+    StringRef Name = A->getValue();
+    if (!Name.empty())
+      CmdArgs.push_back(
+          Args.MakeArgString(Twine("-plugin-opt=vector-library=") + Name));
+  }
 }
 
 void tools::addArchSpecificRPath(const ToolChain &TC, const ArgList &Args,
diff --git a/lld/ELF/Config.h b/lld/ELF/Config.h
--- a/lld/ELF/Config.h
+++ b/lld/ELF/Config.h
@@ -13,6 +13,7 @@
 #include "llvm/ADT/MapVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/ADT/StringSet.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/BinaryFormat/ELF.h"
 #include "llvm/Support/CachePruning.h"
 #include "llvm/Support/CodeGen.h"
@@ -128,6 +129,7 @@
   llvm::MapVector<std::pair<const InputSectionBase *, const InputSectionBase *>,
                   uint64_t>
       callGraphProfile;
+  llvm::TargetLibraryInfoImpl::VectorLibrary VectLib;
   bool allowMultipleDefinition;
   bool allowShlibUndefined;
   bool androidPackDynRelocs;
diff --git a/lld/ELF/Driver.cpp b/lld/ELF/Driver.cpp
--- a/lld/ELF/Driver.cpp
+++ b/lld/ELF/Driver.cpp
@@ -704,6 +704,20 @@
   return OrphanHandlingPolicy::Place;
 }
 
+static llvm::TargetLibraryInfoImpl::VectorLibrary
+getVectLib(opt::InputArgList &args) {
+  StringRef s = args.getLastArgValue(OPT_lto_vector_library);
+  if (s == "Accelerate")
+    return llvm::TargetLibraryInfoImpl::Accelerate;
+  if (s == "MASSV")
+    return llvm::TargetLibraryInfoImpl::MASSV;
+  if (s == "SVML")
+    return llvm::TargetLibraryInfoImpl::SVML;
+  if (!s.empty() && s != "none")
+    error("unknown --vector-library type: " + s);
+  return llvm::TargetLibraryInfoImpl::NoLibrary;
+}
+
 // Parse --build-id or --build-id=<style>. We handle "tree" as a
 // synonym for "sha1" because all our hash functions including
 // -build-id=sha1 are actually tree hashes for performance reasons.
@@ -988,6 +1002,7 @@
   config->useAndroidRelrTags = args.hasFlag(
       OPT_use_android_relr_tags, OPT_no_use_android_relr_tags, false);
   config->unresolvedSymbols = getUnresolvedSymbolPolicy(args);
+  config->VectLib = getVectLib(args);
   config->warnBackrefs =
       args.hasFlag(OPT_warn_backrefs, OPT_no_warn_backrefs, false);
   config->warnCommon = args.hasFlag(OPT_warn_common, OPT_no_warn_common, false);
diff --git a/lld/ELF/LTO.cpp b/lld/ELF/LTO.cpp
--- a/lld/ELF/LTO.cpp
+++ b/lld/ELF/LTO.cpp
@@ -110,6 +110,7 @@
   c.UseNewPM = config->ltoNewPassManager;
   c.DebugPassManager = config->ltoDebugPassManager;
   c.DwoDir = std::string(config->dwoDir);
+  c.Options.VectLib = config->VectLib;
 
   c.HasWholeProgramVisibility = config->ltoWholeProgramVisibility;
 
diff --git a/lld/ELF/Options.td b/lld/ELF/Options.td
--- a/lld/ELF/Options.td
+++ b/lld/ELF/Options.td
@@ -488,6 +488,8 @@
 def lto_obj_path_eq: J<"lto-obj-path=">;
 def lto_sample_profile: J<"lto-sample-profile=">,
   HelpText<"Sample profile file path">;
+def lto_vector_library: J<"lto-vector-library=">,
+  HelpText<"Vector functions library">;
 def lto_whole_program_visibility: F<"lto-whole-program-visibility">,
   HelpText<"Asserts that the LTO link has whole program visibility">;
 def disable_verify: F<"disable-verify">;
@@ -552,6 +554,9 @@
 def: J<"plugin-opt=thinlto-prefix-replace=">,
   Alias<thinlto_prefix_replace_eq>,
   HelpText<"Alias for --thinlto-prefix-replace=">;
+def: J<"plugin-opt=vector-library=">,
+  Alias<lto_vector_library>,
+  HelpText<"Alias for -lto-vector-library=">;
 
 // Ignore LTO plugin-related options.
 // clang -flto passes -plugin and -plugin-opt to the linker. This is required
diff --git a/llvm/include/llvm/Target/TargetOptions.h b/llvm/include/llvm/Target/TargetOptions.h
--- a/llvm/include/llvm/Target/TargetOptions.h
+++ b/llvm/include/llvm/Target/TargetOptions.h
@@ -15,6 +15,7 @@
 #define LLVM_TARGET_TARGETOPTIONS_H
 
 #include "llvm/ADT/FloatingPointMode.h"
+#include "llvm/Analysis/TargetLibraryInfo.h"
 #include "llvm/MC/MCTargetOptions.h"
 
 #include <memory>
@@ -320,6 +321,10 @@
     /// the value of this option.
     FPOpFusion::FPOpFusionMode AllowFPOpFusion = FPOpFusion::Standard;
 
+    /// Vector library used for vectorizable math function calls
+    TargetLibraryInfoImpl::VectorLibrary VectLib =
+        TargetLibraryInfoImpl::NoLibrary;
+
     /// ThreadModel - This flag specifies the type of threading model to assume
     /// for things like atomics
     ThreadModel::Model ThreadModel = ThreadModel::POSIX;
diff --git a/llvm/lib/LTO/LTOBackend.cpp b/llvm/lib/LTO/LTOBackend.cpp
--- a/llvm/lib/LTO/LTOBackend.cpp
+++ b/llvm/lib/LTO/LTOBackend.cpp
@@ -279,6 +279,7 @@
 
   PassManagerBuilder PMB;
   PMB.LibraryInfo = new TargetLibraryInfoImpl(Triple(TM->getTargetTriple()));
+  PMB.LibraryInfo->addVectorizableFunctionsFromVecLib(Conf.Options.VectLib);
   PMB.Inliner = createFunctionInliningPass();
   PMB.ExportSummary = ExportSummary;
   PMB.ImportSummary = ImportSummary;