Teach LTOModule to emit linker flags for dllexported symbols, plus interface cleanup.

[oota-llvm.git] / lib / CodeGen / TargetLoweringObjectFileImpl.cpp

diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index d7b043dac0132adf5c15e5c8f1102f7729a2363f..e1ac444d4a45f98f1e2e330c376cc12f785cecdb 100644 (file)
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -440,16 +440,6 @@ TargetLoweringObjectFileMachO::TargetLoweringObjectFileMachO()
   SupportIndirectSymViaGOTPCRel = true;
 }
 
-/// getDepLibFromLinkerOpt - Extract the dependent library name from a linker
-/// option string. Returns StringRef() if the option does not specify a library.
-StringRef TargetLoweringObjectFileMachO::
-getDepLibFromLinkerOpt(StringRef LinkerOption) const {
-  const char *LibCmd = "-l";
-  if (LinkerOption.startswith(LibCmd))
-    return LinkerOption.substr(strlen(LibCmd));
-  return StringRef();
-}
-
 /// emitModuleFlags - Perform code emission for module flags.
 void TargetLoweringObjectFileMachO::
 emitModuleFlags(MCStreamer &Streamer,
@@ -990,14 +980,6 @@ MCSection *TargetLoweringObjectFileCOFF::getSectionForJumpTable(
                                      COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE);
 }
 
-StringRef TargetLoweringObjectFileCOFF::
-getDepLibFromLinkerOpt(StringRef LinkerOption) const {
-  const char *LibCmd = "/DEFAULTLIB:";
-  if (LinkerOption.startswith(LibCmd))
-    return LinkerOption.substr(strlen(LibCmd));
-  return StringRef();
-}
-
 void TargetLoweringObjectFileCOFF::
 emitModuleFlags(MCStreamer &Streamer,
                 ArrayRef<Module::ModuleFlagEntry> ModuleFlags,
@@ -1045,3 +1027,36 @@ MCSection *TargetLoweringObjectFileCOFF::getStaticDtorSection(
   return getContext().getAssociativeCOFFSection(
       cast<MCSectionCOFF>(StaticDtorSection), KeySym);
 }
+
+void TargetLoweringObjectFileCOFF::emitLinkerFlagsForGlobal(
+    raw_ostream &OS, const GlobalValue *GV, const Mangler &Mang) const {
+  if (!GV->hasDLLExportStorageClass() || GV->isDeclaration())
+    return;
+
+  const Triple &TT = getTargetTriple();
+
+  if (TT.isKnownWindowsMSVCEnvironment())
+    OS << " /EXPORT:";
+  else
+    OS << " -export:";
+
+  if (TT.isWindowsGNUEnvironment() || TT.isWindowsCygwinEnvironment()) {
+    std::string Flag;
+    raw_string_ostream FlagOS(Flag);
+    Mang.getNameWithPrefix(FlagOS, GV, false);
+    FlagOS.flush();
+    if (Flag[0] == DL->getGlobalPrefix())
+      OS << Flag.substr(1);
+    else
+      OS << Flag;
+  } else {
+    Mang.getNameWithPrefix(OS, GV, false);
+  }
+
+  if (!GV->getValueType()->isFunctionTy()) {
+    if (TT.isKnownWindowsMSVCEnvironment())
+      OS << ",DATA";
+    else
+      OS << ",data";
+  }
+}