Index: lib/MC/MCObjectFileInfo.cpp
===================================================================
--- lib/MC/MCObjectFileInfo.cpp
+++ lib/MC/MCObjectFileInfo.cpp
@@ -733,6 +733,11 @@
       ".tls$", COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ |
                    COFF::IMAGE_SCN_MEM_WRITE,
       SectionKind::getDataRel());
+	  
+  StackMapSection = Ctx->getCOFFSection(
+    ".llvm_stackmaps", 
+    COFF::IMAGE_SCN_CNT_INITIALIZED_DATA | COFF::IMAGE_SCN_MEM_READ,
+    SectionKind::getReadOnly());	  
 }
 
 void MCObjectFileInfo::InitMCObjectFileInfo(const Triple &TheTriple,
Index: lib/Target/X86/X86AsmPrinter.cpp
===================================================================
--- lib/Target/X86/X86AsmPrinter.cpp
+++ lib/Target/X86/X86AsmPrinter.cpp
@@ -725,6 +725,8 @@
       for (auto & Symbol : DLLExportedFns)
         GenerateExportDirective(Symbol, /*IsData=*/false);
     }
+
+    SM.serializeToStackMapSection();
   }
 
   if (TT.isOSBinFormatELF()) {
Index: test/CodeGen/X86/statepoint-stackmap-format.ll
===================================================================
--- test/CodeGen/X86/statepoint-stackmap-format.ll
+++ test/CodeGen/X86/statepoint-stackmap-format.ll
@@ -1,10 +1,11 @@
-; RUN: llc < %s | FileCheck %s
+; RUN: llc < %s -mtriple="x86_64-pc-linux-gnu" | FileCheck %s
+; RUN: llc < %s -mtriple="x86_64-pc-win64-coff" | FileCheck %s
+
 ; This test is a sanity check to ensure statepoints are generating StackMap
 ; sections correctly.  This is not intended to be a rigorous test of the 
 ; StackMap format (see the stackmap tests for that).
 
 target datalayout = "e-i64:64-f80:128-n8:16:32:64-S128"
-target triple = "x86_64-pc-linux-gnu"
 
 declare zeroext i1 @return_i1()