Index: llvm/trunk/lib/MC/MCObjectFileInfo.cpp
===================================================================
--- llvm/trunk/lib/MC/MCObjectFileInfo.cpp
+++ llvm/trunk/lib/MC/MCObjectFileInfo.cpp
@@ -583,6 +583,12 @@
   DwarfAddrSection =
     Ctx->getELFSection(".debug_addr", ELF::SHT_PROGBITS, 0,
                        SectionKind::getMetadata());
+
+  StackMapSection =
+    Ctx->getELFSection(".llvm_stackmaps", ELF::SHT_PROGBITS,
+                       ELF::SHF_ALLOC,
+                       SectionKind::getMetadata());
+
 }
 
 
Index: llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp
===================================================================
--- llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp
+++ llvm/trunk/lib/Target/X86/X86AsmPrinter.cpp
@@ -736,6 +736,8 @@
       }
       Stubs.clear();
     }
+
+    SM.serializeToStackMapSection();
   }
 }