diff --git a/llvm/include/llvm/CodeGen/CommandFlags.h b/llvm/include/llvm/CodeGen/CommandFlags.h
--- a/llvm/include/llvm/CodeGen/CommandFlags.h
+++ b/llvm/include/llvm/CodeGen/CommandFlags.h
@@ -45,6 +45,9 @@
 CodeModel::Model getCodeModel();
 std::optional<CodeModel::Model> getExplicitCodeModel();
 
+uint64_t getLargeDataThreshold();
+std::optional<uint64_t> getExplicitLargeDataThreshold();
+
 llvm::ExceptionHandling getExceptionModel();
 
 std::optional<CodeGenFileType> getExplicitFileType();
diff --git a/llvm/include/llvm/Target/TargetMachine.h b/llvm/include/llvm/Target/TargetMachine.h
--- a/llvm/include/llvm/Target/TargetMachine.h
+++ b/llvm/include/llvm/Target/TargetMachine.h
@@ -100,6 +100,7 @@
 
   Reloc::Model RM = Reloc::Static;
   CodeModel::Model CMModel = CodeModel::Small;
+  uint64_t LargeDataThreshold = 0;
   CodeGenOpt::Level OptLevel = CodeGenOpt::Default;
 
   /// Contains target specific asm information.
@@ -235,7 +236,8 @@
   /// Set the code model.
   void setCodeModel(CodeModel::Model CM) { CMModel = CM; }
 
-  bool isLargeData() const;
+  void setLargeDataThreshold(uint64_t LDT) { LargeDataThreshold = LDT; }
+  bool isLargeData(const GlobalVariable *GV) const;
 
   bool isPositionIndependent() const;
 
diff --git a/llvm/lib/CodeGen/CommandFlags.cpp b/llvm/lib/CodeGen/CommandFlags.cpp
--- a/llvm/lib/CodeGen/CommandFlags.cpp
+++ b/llvm/lib/CodeGen/CommandFlags.cpp
@@ -58,6 +58,7 @@
 CGOPT_EXP(Reloc::Model, RelocModel)
 CGOPT(ThreadModel::Model, ThreadModel)
 CGOPT_EXP(CodeModel::Model, CodeModel)
+CGOPT_EXP(uint64_t, LargeDataThreshold)
 CGOPT(ExceptionHandling, ExceptionModel)
 CGOPT_EXP(CodeGenFileType, FileType)
 CGOPT(FramePointerKind, FramePointerUsage)
@@ -161,6 +162,12 @@
                  clEnumValN(CodeModel::Large, "large", "Large code model")));
   CGBINDOPT(CodeModel);
 
+  static cl::opt<uint64_t> LargeDataThreshold(
+      "large-data-threshold",
+      cl::desc("Choose large data threshold for x86_64 medium code model"),
+      cl::init(0));
+  CGBINDOPT(LargeDataThreshold);
+
   static cl::opt<ExceptionHandling> ExceptionModel(
       "exception-model", cl::desc("exception model"),
       cl::init(ExceptionHandling::None),
diff --git a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
--- a/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -651,8 +651,8 @@
     Name += utostr(EntrySize);
   } else {
     bool IsLarge = false;
-    if (isa<GlobalVariable>(GO))
-      IsLarge = TM.isLargeData();
+    if (auto *GV = dyn_cast<GlobalVariable>(GO))
+      IsLarge = TM.isLargeData(GV);
     Name = getSectionPrefixForGlobal(Kind, IsLarge);
   }
 
@@ -855,8 +855,8 @@
     Group = C->getName();
     IsComdat = C->getSelectionKind() == Comdat::Any;
   }
-  if (isa<GlobalVariable>(GO)) {
-    if (TM.isLargeData())
+  if (auto *GV = dyn_cast<GlobalVariable>(GO)) {
+    if (TM.isLargeData(GV))
       Flags |= ELF::SHF_X86_64_LARGE;
   }
 
diff --git a/llvm/lib/Target/TargetMachine.cpp b/llvm/lib/Target/TargetMachine.cpp
--- a/llvm/lib/Target/TargetMachine.cpp
+++ b/llvm/lib/Target/TargetMachine.cpp
@@ -39,13 +39,16 @@
 
 TargetMachine::~TargetMachine() = default;
 
-bool TargetMachine::isLargeData() const {
+bool TargetMachine::isLargeData(const GlobalVariable *GV) const {
   if (getTargetTriple().getArch() != Triple::x86_64)
     return false;
   switch (getCodeModel()) {
   case CodeModel::Large:
-  case CodeModel::Medium:
     return true;
+  case CodeModel::Medium: {
+    const DataLayout &DL = GV->getParent()->getDataLayout();
+    return DL.getTypeSizeInBits(GV->getValueType()) / 8 >= LargeDataThreshold;
+  }
   default:
     return false;
   }
diff --git a/llvm/test/CodeGen/X86/code-model-elf-sections.ll b/llvm/test/CodeGen/X86/code-model-elf-sections.ll
--- a/llvm/test/CodeGen/X86/code-model-elf-sections.ll
+++ b/llvm/test/CodeGen/X86/code-model-elf-sections.ll
@@ -2,6 +2,10 @@
 ; RUN: llvm-readobj -S %t | FileCheck %s --check-prefix=SMALL
 ; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=medium -o %t
 ; RUN: llvm-readobj -S %t | FileCheck %s --check-prefix=LARGE
+; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=medium -large-data-threshold=80 -o %t
+; RUN: llvm-readobj -S %t | FileCheck %s --check-prefix=LARGE
+; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=medium -large-data-threshold=81 -o %t
+; RUN: llvm-readobj -S %t | FileCheck %s --check-prefix=SMALL
 ; RUN: llc < %s -relocation-model=pic -filetype=obj -code-model=large -o %t
 ; RUN: llvm-readobj -S %t | FileCheck %s --check-prefix=LARGE
 
@@ -66,9 +70,9 @@
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64--linux"
 
-@data = internal global [10 x i32] [i32 1, i32 2, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0, i32 0], align 16
-@bss = internal global [10 x i32] zeroinitializer, align 16
-@rodata = internal constant [10 x i32] zeroinitializer, align 16
-@relro = internal constant ptr @func, align 16
+@data = internal global [10 x i64] [i64 1, i64 2, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0, i64 0]
+@bss = internal global [10 x i64] zeroinitializer
+@rodata = internal constant [10 x i64] zeroinitializer
+@relro = internal constant [10 x ptr] [ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func, ptr @func]
 
 declare void @func()
diff --git a/llvm/tools/llc/llc.cpp b/llvm/tools/llc/llc.cpp
--- a/llvm/tools/llc/llc.cpp
+++ b/llvm/tools/llc/llc.cpp
@@ -596,6 +596,8 @@
     std::optional<CodeModel::Model> CM_IR = M->getCodeModel();
     if (!CM && CM_IR)
       Target->setCodeModel(*CM_IR);
+    if (auto LDT = codegen::getExplicitLargeDataThreshold())
+      Target->setLargeDataThreshold(*LDT);
   } else {
     TheTriple = Triple(Triple::normalize(TargetTriple));
     if (TheTriple.getTriple().empty())