Remove HasLEB128.

We already require CFI, so it should be safe to require .leb128 and .uleb128.

llvm-svn: 215712

llvm/include/llvm/MC/MCAsmInfo.h

@@ -295,9 +295,6 @@ protected:
 
   //===--- Dwarf Emission Directives -----------------------------------===//
 
-  /// True if target asm supports leb128 directives.  Defaults to false.
-  bool HasLEB128;
-
   /// True if target supports emission of debugging information.  Defaults to
   /// false.
   bool SupportsDebugInformation;
@@ -471,7 +468,6 @@ public:
   MCSymbolAttr getProtectedVisibilityAttr() const {
     return ProtectedVisibilityAttr;
   }
-  bool hasLEB128() const { return HasLEB128; }
   bool doesSupportDebugInformation() const { return SupportsDebugInformation; }
   bool doesSupportExceptionHandling() const {
     return ExceptionsType != ExceptionHandling::None;

llvm/lib/MC/MCAsmInfo.cpp

@@ -79,7 +79,6 @@ MCAsmInfo::MCAsmInfo() {
   HiddenVisibilityAttr = MCSA_Hidden;
   HiddenDeclarationVisibilityAttr = MCSA_Hidden;
   ProtectedVisibilityAttr = MCSA_Protected;
-  HasLEB128 = false;
   SupportsDebugInformation = false;
   ExceptionsType = ExceptionHandling::None;
   WinEHEncodingType = WinEH::EncodingType::ET_Invalid;

llvm/lib/MC/MCAsmInfoCOFF.cpp

@@ -32,7 +32,6 @@ MCAsmInfoCOFF::MCAsmInfoCOFF() {
   ProtectedVisibilityAttr = MCSA_Invalid;
 
   // Set up DWARF directives
-  HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
   SupportsDebugInformation = true;
   NeedsDwarfSectionOffsetDirective = true;
 

llvm/lib/MC/MCAsmStreamer.cpp

@@ -700,7 +700,6 @@ void MCAsmStreamer::EmitULEB128Value(const MCExpr *Value) {
     EmitULEB128IntValue(IntValue);
     return;
   }
-  assert(MAI->hasLEB128() && "Cannot print a .uleb");
   OS << ".uleb128 " << *Value;
   EmitEOL();
 }
@@ -711,7 +710,6 @@ void MCAsmStreamer::EmitSLEB128Value(const MCExpr *Value) {
     EmitSLEB128IntValue(IntValue);
     return;
   }
-  assert(MAI->hasLEB128() && "Cannot print a .sleb");
   OS << ".sleb128 " << *Value;
   EmitEOL();
 }

llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp

@@ -89,7 +89,6 @@ AArch64MCAsmInfoELF::AArch64MCAsmInfoELF(StringRef TT) {
 
   WeakRefDirective = "\t.weak\t";
 
-  HasLEB128 = true;
   SupportsDebugInformation = true;
 
   // Exceptions handling

llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp

@@ -55,7 +55,6 @@ ARMELFMCAsmInfo::ARMELFMCAsmInfo(StringRef TT) {
   Code16Directive = ".code\t16";
   Code32Directive = ".code\t32";
 
-  HasLEB128 = true;
   SupportsDebugInformation = true;
 
   // Exceptions handling
@@ -103,7 +102,6 @@ ARMCOFFMCAsmInfoGNU::ARMCOFFMCAsmInfoGNU() {
   Code32Directive = ".code\t32";
   PrivateGlobalPrefix = ".L";
 
-  HasLEB128 = true;
   SupportsDebugInformation = true;
   ExceptionsType = ExceptionHandling::None;
   UseParensForSymbolVariant = true;

llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.cpp

@@ -24,7 +24,6 @@ HexagonMCAsmInfo::HexagonMCAsmInfo(StringRef TT) {
   Data64bitsDirective = nullptr;  // .xword is only supported by V9.
   ZeroDirective = "\t.skip\t";
   CommentString = "//";
-  HasLEB128 = true;
 
   LCOMMDirectiveAlignmentType = LCOMM::ByteAlignment;
   InlineAsmStart = "# InlineAsm Start";

llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp

@@ -41,6 +41,5 @@ MipsMCAsmInfo::MipsMCAsmInfo(StringRef TT) {
   UseAssignmentForEHBegin = true;
   SupportsDebugInformation = true;
   ExceptionsType = ExceptionHandling::DwarfCFI;
-  HasLEB128 = true;
   DwarfRegNumForCFI = true;
 }

llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp

@@ -64,7 +64,6 @@ PPCELFMCAsmInfo::PPCELFMCAsmInfo(bool is64Bit, const Triple& T) {
   DollarIsPC = true;
 
   // Set up DWARF directives
-  HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
   MinInstAlignment = 4;
 
   // Exceptions handling

llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp

@@ -52,7 +52,6 @@ AMDGPUMCAsmInfo::AMDGPUMCAsmInfo(StringRef &TT) : MCAsmInfo() {
   HasNoDeadStrip = true;
   WeakRefDirective = ".weakref\t";
   //===--- Dwarf Emission Directives -----------------------------------===//
-  HasLEB128 = true;
   SupportsDebugInformation = true;
 }
 

llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp

@@ -35,7 +35,6 @@ SparcELFMCAsmInfo::SparcELFMCAsmInfo(StringRef TT) {
   Data64bitsDirective = (isV9) ? "\t.xword\t" : nullptr;
   ZeroDirective = "\t.skip\t";
   CommentString = "!";
-  HasLEB128 = true;
   SupportsDebugInformation = true;
 
   ExceptionsType = ExceptionHandling::DwarfCFI;

llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp

@@ -23,7 +23,6 @@ SystemZMCAsmInfo::SystemZMCAsmInfo(StringRef TT) {
   Data64bitsDirective = "\t.quad\t";
   UsesELFSectionDirectiveForBSS = true;
   SupportsDebugInformation = true;
-  HasLEB128 = true;
   ExceptionsType = ExceptionHandling::DwarfCFI;
 }
 

llvm/lib/Target/X86/MCTargetDesc/X86MCAsmInfo.cpp

@@ -102,9 +102,6 @@ X86ELFMCAsmInfo::X86ELFMCAsmInfo(const Triple &T) {
 
   TextAlignFillValue = 0x90;
 
-  // Set up DWARF directives
-  HasLEB128 = true;  // Target asm supports leb128 directives (little-endian)
-
   // Debug Information
   SupportsDebugInformation = true;
 

llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.cpp

@@ -28,7 +28,6 @@ XCoreMCAsmInfo::XCoreMCAsmInfo(StringRef TT) {
   ProtectedVisibilityAttr = MCSA_Invalid;
 
   // Debug
-  HasLEB128 = true;
   ExceptionsType = ExceptionHandling::DwarfCFI;
   DwarfRegNumForCFI = true;
 }

llvm/test/MC/X86/macho-uleb.s

@@ -0,0 +1,7 @@
+// RUN: llvm-mc -triple=x86_64-apple-darwin %s | FileCheck %s
+
+a:
+b:
+        .uleb128 a-b
+
+// CHECK:        .uleb128 a-b