Remove the UseCFI option from createAsmStreamer.

[oota-llvm.git] / tools / llvm-mc / llvm-mc.cpp

diff --git a/tools/llvm-mc/llvm-mc.cpp b/tools/llvm-mc/llvm-mc.cpp
index b2e7a81488dceec2a978337998789cd90e8bfe6c..364ae73401e39cf6eb051b7edd1891e0b8f05f1f 100644 (file)
--- a/tools/llvm-mc/llvm-mc.cpp
+++ b/tools/llvm-mc/llvm-mc.cpp
@@ -25,7 +25,9 @@
 #include "llvm/MC/MCStreamer.h"
 #include "llvm/MC/MCSubtargetInfo.h"
 #include "llvm/MC/MCTargetAsmParser.h"
+#include "llvm/MC/MCTargetOptionsCommandFlags.h"
 #include "llvm/Support/CommandLine.h"
+#include "llvm/Support/Compression.h"
 #include "llvm/Support/FileUtilities.h"
 #include "llvm/Support/FormattedStream.h"
 #include "llvm/Support/Host.h"
@@ -152,6 +154,9 @@ static cl::opt<bool>
 GenDwarfForAssembly("g", cl::desc("Generate dwarf debugging info for assembly "
                                   "source files"));
 
+static cl::opt<int>
+DwarfVersion("dwarf-version", cl::desc("Dwarf version"), cl::init(4));
+
 static cl::opt<std::string>
 DebugCompilationDir("fdebug-compilation-dir",
                     cl::desc("Specifies the debug info's compilation dir"));
@@ -196,7 +201,7 @@ static const Target *GetTarget(const char *ProgName) {
                                                          Error);
   if (!TheTarget) {
     errs() << ProgName << ": " << Error;
-    return 0;
+    return nullptr;
   }
 
   // Update the triple name and return the found target.
@@ -214,7 +219,7 @@ static tool_output_file *GetOutputStream() {
   if (!Err.empty()) {
     errs() << Err << '\n';
     delete Out;
-    return 0;
+    return nullptr;
   }
 
   return Out;
@@ -319,9 +324,11 @@ static int AsLexInput(SourceMgr &SrcMgr, MCAsmInfo &MAI, tool_output_file *Out)
 static int AssembleInput(const char *ProgName, const Target *TheTarget,
                          SourceMgr &SrcMgr, MCContext &Ctx, MCStreamer &Str,
                          MCAsmInfo &MAI, MCSubtargetInfo &STI, MCInstrInfo &MCII) {
-  std::unique_ptr<MCAsmParser> Parser(createMCAsmParser(SrcMgr, Ctx, Str, MAI));
+  std::unique_ptr<MCAsmParser> Parser(
+      createMCAsmParser(SrcMgr, Ctx, Str, MAI));
   std::unique_ptr<MCTargetAsmParser> TAP(
-      TheTarget->createMCAsmParser(STI, *Parser, MCII));
+      TheTarget->createMCAsmParser(STI, *Parser, MCII,
+                                   InitMCTargetOptionsFromFlags()));
   if (!TAP) {
     errs() << ProgName
            << ": error: this target does not support assembly parsing.\n";
@@ -384,8 +391,13 @@ int main(int argc, char **argv) {
   std::unique_ptr<MCAsmInfo> MAI(TheTarget->createMCAsmInfo(*MRI, TripleName));
   assert(MAI && "Unable to create target asm info!");
 
-  if (CompressDebugSections)
+  if (CompressDebugSections) {
+    if (!zlib::isAvailable()) {
+      errs() << ProgName << ": build tools with zlib to enable -compress-debug-sections";
+      return 1;
+    }
     MAI->setCompressDebugSections(true);
+  }
 
   // FIXME: This is not pretty. MCContext has a ptr to MCObjectFileInfo and
   // MCObjectFileInfo needs a MCContext reference in order to initialize itself.
@@ -397,6 +409,12 @@ int main(int argc, char **argv) {
     Ctx.setAllowTemporaryLabels(false);
 
   Ctx.setGenDwarfForAssembly(GenDwarfForAssembly);
+  if (DwarfVersion < 2 || DwarfVersion > 4) {
+    errs() << ProgName << ": Dwarf version " << DwarfVersion
+           << " is not supported." << '\n';
+    return 1;
+  }
+  Ctx.setDwarfVersion(DwarfVersion);
   if (!DwarfDebugFlags.empty())
     Ctx.setDwarfDebugFlags(StringRef(DwarfDebugFlags));
   if (!DwarfDebugProducer.empty())
@@ -426,20 +444,19 @@ int main(int argc, char **argv) {
   std::unique_ptr<MCSubtargetInfo> STI(
       TheTarget->createMCSubtargetInfo(TripleName, MCPU, FeaturesStr));
 
-  MCInstPrinter *IP = NULL;
+  MCInstPrinter *IP = nullptr;
   if (FileType == OFT_AssemblyFile) {
     IP =
       TheTarget->createMCInstPrinter(OutputAsmVariant, *MAI, *MCII, *MRI, *STI);
-    MCCodeEmitter *CE = 0;
-    MCAsmBackend *MAB = 0;
+    MCCodeEmitter *CE = nullptr;
+    MCAsmBackend *MAB = nullptr;
     if (ShowEncoding) {
       CE = TheTarget->createMCCodeEmitter(*MCII, *MRI, *STI, Ctx);
       MAB = TheTarget->createMCAsmBackend(*MRI, TripleName, MCPU);
     }
     Str.reset(TheTarget->createAsmStreamer(Ctx, FOS, /*asmverbose*/ true,
-                                           /*UseCFI*/ true,
-                                           /*useDwarfDirectory*/
-                                           true, IP, CE, MAB, ShowInst));
+                                           /*useDwarfDirectory*/ true, IP, CE,
+                                           MAB, ShowInst));
 
   } else if (FileType == OFT_Null) {
     Str.reset(createNullStreamer(Ctx));