Initial support for the cfi directives. This is just enough to get

f:
        .cfi_startproc
        nop
        .cfi_endproc

assembled (on ELF).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121434 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 14 insertions, 7 deletions

diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index 46eb3727d6..1d42c4666a 100644
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -24,6 +24,9 @@
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetRegistry.h"
 #include "llvm/Target/SubtargetFeature.h" // FIXME.
+#include "llvm/Target/TargetAsmInfo.h"  // FIXME.
+#include "llvm/Target/TargetLowering.h"  // FIXME.
+#include "llvm/Target/TargetLoweringObjectFile.h"  // FIXME.
 #include "llvm/Target/TargetMachine.h"  // FIXME.
 #include "llvm/Target/TargetSelect.h"
 #include "llvm/ADT/OwningPtr.h"
@@ -298,8 +301,6 @@ static int AssembleInput(const char *ProgName) {
   llvm::OwningPtr<MCAsmInfo> MAI(TheTarget->createAsmInfo(TripleName));
   assert(MAI && "Unable to create target asm info!");
   
-  MCContext Ctx(*MAI);
-
   // Package up features to be passed to target/subtarget
   std::string FeaturesStr;
   if (MCPU.size()) {
@@ -321,6 +322,9 @@ static int AssembleInput(const char *ProgName) {
     return 1;
   }
 
+  const TargetAsmInfo tai(*TM);
+  MCContext Ctx(*MAI, &tai);
+
   OwningPtr<tool_output_file> Out(GetOutputStream());
   if (!Out)
     return 1;
@@ -328,15 +332,18 @@ static int AssembleInput(const char *ProgName) {
   formatted_raw_ostream FOS(Out->os());
   OwningPtr<MCStreamer> Str;
 
+  const TargetLoweringObjectFile &TLOF =
+    TM->getTargetLowering()->getObjFileLowering();
+  const_cast<TargetLoweringObjectFile&>(TLOF).Initialize(Ctx, *TM);
+
   if (FileType == OFT_AssemblyFile) {
     MCInstPrinter *IP =
       TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI);
     MCCodeEmitter *CE = 0;
     if (ShowEncoding)
       CE = TheTarget->createCodeEmitter(*TM, Ctx);
-    Str.reset(TheTarget->createAsmStreamer(Ctx, FOS,
-                                           TM->getTargetData()->isLittleEndian(),
-                                           /*asmverbose*/true, IP, CE, ShowInst));
+    Str.reset(TheTarget->createAsmStreamer(Ctx, FOS, /*asmverbose*/true,
+                                           /*useLoc*/ true, IP, CE, ShowInst));
   } else if (FileType == OFT_Null) {
     Str.reset(createNullStreamer(Ctx));
   } else {
diff --git a/tools/lto/LTOCodeGenerator.cpp b/tools/lto/LTOCodeGenerator.cpp
index f1c5680add..d49e6a77b3 100644
--- a/tools/lto/LTOCodeGenerator.cpp
+++ b/tools/lto/LTOCodeGenerator.cpp
@@ -347,7 +347,7 @@ void LTOCodeGenerator::applyScopeRestrictions() {
 
   // mark which symbols can not be internalized 
   if (!_mustPreserveSymbols.empty()) {
-    MCContext Context(*_target->getMCAsmInfo());
+    MCContext Context(*_target->getMCAsmInfo(), NULL);
     Mangler mangler(Context, *_target->getTargetData());
     std::vector<const char*> mustPreserveList;
     for (Module::iterator f = mergedModule->begin(),
diff --git a/tools/lto/LTOModule.cpp b/tools/lto/LTOModule.cpp
index 2453e2b2c2..a33b8b473e 100644
--- a/tools/lto/LTOModule.cpp
+++ b/tools/lto/LTOModule.cpp
@@ -428,7 +428,7 @@ void LTOModule::lazyParseSymbols() {
   _symbolsParsed = true;
 
   // Use mangler to add GlobalPrefix to names to match linker names.
-  MCContext Context(*_target->getMCAsmInfo());
+  MCContext Context(*_target->getMCAsmInfo(), NULL);
   Mangler mangler(Context, *_target->getTargetData());
 
   // add functions