Replace string GNU Triples with llvm::Triple in MCAsmInfo subclasses and create*AsmInfo(). NFC.

Summary:
This is the first of several patches to eliminate StringRef forms of GNU
triples from the internals of LLVM. After this is complete, GNU triples
will be replaced by a more authoratitive representation in the form of
an LLVM TargetTuple.

Reviewers: rengolin

Reviewed By: rengolin

Subscribers: ted, llvm-commits, rengolin, jholewinski

Differential Revision: http://reviews.llvm.org/D10236

llvm-svn: 239036

32 files changed, 66 insertions, 70 deletions

diff --git a/llvm/include/llvm/Support/TargetRegistry.h b/llvm/include/llvm/Support/TargetRegistry.h
index 408e908aa04..837fc66f38a 100644
--- a/llvm/include/llvm/Support/TargetRegistry.h
+++ b/llvm/include/llvm/Support/TargetRegistry.h
@@ -91,7 +91,7 @@ public:
   typedef bool (*ArchMatchFnTy)(Triple::ArchType Arch);
 
   typedef MCAsmInfo *(*MCAsmInfoCtorFnTy)(const MCRegisterInfo &MRI,
-                                          StringRef TT);
+                                          const Triple &TT);
   typedef MCCodeGenInfo *(*MCCodeGenInfoCtorFnTy)(StringRef TT, Reloc::Model RM,
                                                   CodeModel::Model CM,
                                                   CodeGenOpt::Level OL);
@@ -287,15 +287,15 @@ public:
   /// createMCAsmInfo - Create a MCAsmInfo implementation for the specified
   /// target triple.
   ///
-  /// \param Triple This argument is used to determine the target machine
+  /// \param TheTriple This argument is used to determine the target machine
   /// feature set; it should always be provided. Generally this should be
   /// either the target triple from the module, or the target triple of the
   /// host if that does not exist.
   MCAsmInfo *createMCAsmInfo(const MCRegisterInfo &MRI,
-                             StringRef Triple) const {
+                             StringRef TheTriple) const {
     if (!MCAsmInfoCtorFn)
       return nullptr;
-    return MCAsmInfoCtorFn(MRI, Triple);
+    return MCAsmInfoCtorFn(MRI, Triple(TheTriple));
   }
 
   /// createMCCodeGenInfo - Create a MCCodeGenInfo implementation.
@@ -889,7 +889,8 @@ template <class MCAsmInfoImpl> struct RegisterMCAsmInfo {
   }
 
 private:
-  static MCAsmInfo *Allocator(const MCRegisterInfo & /*MRI*/, StringRef TT) {
+  static MCAsmInfo *Allocator(const MCRegisterInfo & /*MRI*/,
+                              const Triple &TT) {
     return new MCAsmInfoImpl(TT);
   }
 };
diff --git a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
index 3880564efbc..921c4b94a72 100644
--- a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
+++ b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.cpp
@@ -69,8 +69,7 @@ const MCExpr *AArch64MCAsmInfoDarwin::getExprForPersonalitySymbol(
   return MCBinaryExpr::createSub(Res, PC, Context);
 }
 
-AArch64MCAsmInfoELF::AArch64MCAsmInfoELF(StringRef TT) {
-  Triple T(TT);
+AArch64MCAsmInfoELF::AArch64MCAsmInfoELF(const Triple &T) {
   if (T.getArch() == Triple::aarch64_be)
     IsLittleEndian = false;
 
diff --git a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.h b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.h
index 9b88de7dabb..253cd30f26e 100644
--- a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.h
+++ b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCAsmInfo.h
@@ -18,9 +18,10 @@
 #include "llvm/MC/MCAsmInfoELF.h"
 
 namespace llvm {
-class Target;
-class StringRef;
 class MCStreamer;
+class Target;
+class Triple;
+
 struct AArch64MCAsmInfoDarwin : public MCAsmInfoDarwin {
   explicit AArch64MCAsmInfoDarwin();
   const MCExpr *
@@ -29,7 +30,7 @@ struct AArch64MCAsmInfoDarwin : public MCAsmInfoDarwin {
 };
 
 struct AArch64MCAsmInfoELF : public MCAsmInfoELF {
-  explicit AArch64MCAsmInfoELF(StringRef TT);
+  explicit AArch64MCAsmInfoELF(const Triple &T);
 };
 
 } // namespace llvm
diff --git a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCTargetDesc.cpp b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCTargetDesc.cpp
index 2e22de08537..f89a8527387 100644
--- a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCTargetDesc.cpp
+++ b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64MCTargetDesc.cpp
@@ -58,15 +58,13 @@ static MCRegisterInfo *createAArch64MCRegisterInfo(StringRef Triple) {
 }
 
 static MCAsmInfo *createAArch64MCAsmInfo(const MCRegisterInfo &MRI,
-                                         StringRef TT) {
-  Triple TheTriple(TT);
-
+                                         const Triple &TheTriple) {
   MCAsmInfo *MAI;
   if (TheTriple.isOSDarwin())
     MAI = new AArch64MCAsmInfoDarwin();
   else {
     assert(TheTriple.isOSBinFormatELF() && "Only expect Darwin or ELF");
-    MAI = new AArch64MCAsmInfoELF(TT);
+    MAI = new AArch64MCAsmInfoELF(TheTriple);
   }
 
   // Initial state of the frame pointer is SP.
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
index caa873622ae..1ac08159bd3 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.cpp
@@ -19,8 +19,7 @@ using namespace llvm;
 
 void ARMMCAsmInfoDarwin::anchor() { }
 
-ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin(StringRef TT) {
-  Triple TheTriple(TT);
+ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin(const Triple &TheTriple) {
   if ((TheTriple.getArch() == Triple::armeb) ||
       (TheTriple.getArch() == Triple::thumbeb))
     IsLittleEndian = false;
@@ -41,8 +40,7 @@ ARMMCAsmInfoDarwin::ARMMCAsmInfoDarwin(StringRef TT) {
 
 void ARMELFMCAsmInfo::anchor() { }
 
-ARMELFMCAsmInfo::ARMELFMCAsmInfo(StringRef TT) {
-  Triple TheTriple(TT);
+ARMELFMCAsmInfo::ARMELFMCAsmInfo(const Triple &TheTriple) {
   if ((TheTriple.getArch() == Triple::armeb) ||
       (TheTriple.getArch() == Triple::thumbeb))
     IsLittleEndian = false;
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
index 6cb471537f6..99a5fff5ec2 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCAsmInfo.h
@@ -19,18 +19,19 @@
 #include "llvm/MC/MCAsmInfoELF.h"
 
 namespace llvm {
+  class Triple;
 
   class ARMMCAsmInfoDarwin : public MCAsmInfoDarwin {
     virtual void anchor();
 
   public:
-    explicit ARMMCAsmInfoDarwin(StringRef TT);
+    explicit ARMMCAsmInfoDarwin(const Triple &TheTriple);
   };
 
   class ARMELFMCAsmInfo : public MCAsmInfoELF {
     void anchor() override;
   public:
-    explicit ARMELFMCAsmInfo(StringRef TT);
+    explicit ARMELFMCAsmInfo(const Triple &TT);
 
     void setUseIntegratedAssembler(bool Value) override;
   };
diff --git a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
index 30deba9a08c..92c4d6a824e 100644
--- a/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
+++ b/llvm/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -277,18 +277,17 @@ static MCRegisterInfo *createARMMCRegisterInfo(StringRef Triple) {
   return X;
 }
 
-static MCAsmInfo *createARMMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
-  Triple TheTriple(TT);
-
+static MCAsmInfo *createARMMCAsmInfo(const MCRegisterInfo &MRI,
+                                     const Triple &TheTriple) {
   MCAsmInfo *MAI;
   if (TheTriple.isOSDarwin() || TheTriple.isOSBinFormatMachO())
-    MAI = new ARMMCAsmInfoDarwin(TT);
+    MAI = new ARMMCAsmInfoDarwin(TheTriple);
   else if (TheTriple.isWindowsItaniumEnvironment())
     MAI = new ARMCOFFMCAsmInfoGNU();
   else if (TheTriple.isWindowsMSVCEnvironment())
     MAI = new ARMCOFFMCAsmInfoMicrosoft();
   else
-    MAI = new ARMELFMCAsmInfo(TT);
+    MAI = new ARMELFMCAsmInfo(TheTriple);
 
   unsigned Reg = MRI.getDwarfRegNum(ARM::SP, true);
   MAI->addInitialFrameState(MCCFIInstruction::createDefCfa(nullptr, Reg, 0));
diff --git a/llvm/lib/Target/BPF/MCTargetDesc/BPFMCAsmInfo.h b/llvm/lib/Target/BPF/MCTargetDesc/BPFMCAsmInfo.h
index ab61ae7ae66..faa36b816f8 100644
--- a/llvm/lib/Target/BPF/MCTargetDesc/BPFMCAsmInfo.h
+++ b/llvm/lib/Target/BPF/MCTargetDesc/BPFMCAsmInfo.h
@@ -19,10 +19,11 @@
 
 namespace llvm {
 class Target;
+class Triple;
 
 class BPFMCAsmInfo : public MCAsmInfo {
 public:
-  explicit BPFMCAsmInfo(StringRef TT) {
+  explicit BPFMCAsmInfo(const Triple &TT) {
     PrivateGlobalPrefix = ".L";
     WeakRefDirective = "\t.weak\t";
 
diff --git a/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.cpp b/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.cpp
index ad5e0fb15e7..51d2f1c878d 100644
--- a/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.cpp
+++ b/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.cpp
@@ -18,7 +18,7 @@ using namespace llvm;
 // Pin the vtable to this file.
 void HexagonMCAsmInfo::anchor() {}
 
-HexagonMCAsmInfo::HexagonMCAsmInfo(StringRef TT) {
+HexagonMCAsmInfo::HexagonMCAsmInfo(const Triple &TT) {
   Data16bitsDirective = "\t.half\t";
   Data32bitsDirective = "\t.word\t";
   Data64bitsDirective = nullptr;  // .xword is only supported by V9.
diff --git a/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.h b/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.h
index ab18f0b37ba..dc070699478 100644
--- a/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.h
+++ b/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCAsmInfo.h
@@ -18,10 +18,12 @@
 #include "llvm/MC/MCAsmInfoELF.h"
 
 namespace llvm {
+  class Triple;
+
   class HexagonMCAsmInfo : public MCAsmInfoELF {
     void anchor() override;
   public:
-    explicit HexagonMCAsmInfo(StringRef TT);
+    explicit HexagonMCAsmInfo(const Triple &TT);
   };
 
 } // namespace llvm
diff --git a/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp b/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp
index 41ee8a155df..43734ed6ca3 100644
--- a/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp
+++ b/llvm/lib/Target/Hexagon/MCTargetDesc/HexagonMCTargetDesc.cpp
@@ -55,7 +55,7 @@ createHexagonMCSubtargetInfo(StringRef TT, StringRef CPU, StringRef FS) {
 }
 
 static MCAsmInfo *createHexagonMCAsmInfo(const MCRegisterInfo &MRI,
-                                         StringRef TT) {
+                                         const Triple &TT) {
   MCAsmInfo *MAI = new HexagonMCAsmInfo(TT);
 
   // VirtualFP = (R30 + #0).
diff --git a/llvm/lib/Target/MSP430/MCTargetDesc/LLVMBuild.txt b/llvm/lib/Target/MSP430/MCTargetDesc/LLVMBuild.txt
index b8f3d02ab4d..a305b2db868 100644
--- a/llvm/lib/Target/MSP430/MCTargetDesc/LLVMBuild.txt
+++ b/llvm/lib/Target/MSP430/MCTargetDesc/LLVMBuild.txt
@@ -19,5 +19,5 @@
 type = Library
 name = MSP430Desc
 parent = MSP430
-required_libraries = MC MSP430AsmPrinter MSP430Info
+required_libraries = MC MSP430AsmPrinter MSP430Info Support
 add_to_library_groups = MSP430
diff --git a/llvm/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.cpp b/llvm/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.cpp
index df1aa1a41f1..c26b3081dbc 100644
--- a/llvm/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.cpp
+++ b/llvm/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.cpp
@@ -12,12 +12,11 @@
 //===----------------------------------------------------------------------===//
 
 #include "MSP430MCAsmInfo.h"
-#include "llvm/ADT/StringRef.h"
 using namespace llvm;
 
 void MSP430MCAsmInfo::anchor() { }
 
-MSP430MCAsmInfo::MSP430MCAsmInfo(StringRef TT) {
+MSP430MCAsmInfo::MSP430MCAsmInfo(const Triple &TT) {
   PointerSize = CalleeSaveStackSlotSize = 2;
 
   CommentString = ";";
diff --git a/llvm/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.h b/llvm/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.h
index 2c9532d321e..ff5b0b6d858 100644
--- a/llvm/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.h
+++ b/llvm/lib/Target/MSP430/MCTargetDesc/MSP430MCAsmInfo.h
@@ -17,12 +17,12 @@
 #include "llvm/MC/MCAsmInfoELF.h"
 
 namespace llvm {
-  class StringRef;
+  class Triple;
 
   class MSP430MCAsmInfo : public MCAsmInfoELF {
     void anchor() override;
   public:
-    explicit MSP430MCAsmInfo(StringRef TT);
+    explicit MSP430MCAsmInfo(const Triple &TT);
   };
 
 } // namespace llvm
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp
index e2bd5a815ab..4d554583dc7 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.cpp
@@ -18,8 +18,7 @@ using namespace llvm;
 
 void MipsMCAsmInfo::anchor() { }
 
-MipsMCAsmInfo::MipsMCAsmInfo(StringRef TT) {
-  Triple TheTriple(TT);
+MipsMCAsmInfo::MipsMCAsmInfo(const Triple &TheTriple) {
   if ((TheTriple.getArch() == Triple::mips) ||
       (TheTriple.getArch() == Triple::mips64))
     IsLittleEndian = false;
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.h b/llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.h
index 59ff1c41ed6..5d23fcbd7a4 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.h
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsMCAsmInfo.h
@@ -17,12 +17,12 @@
 #include "llvm/MC/MCAsmInfoELF.h"
 
 namespace llvm {
-  class StringRef;
+  class Triple;
 
   class MipsMCAsmInfo : public MCAsmInfoELF {
     void anchor() override;
   public:
-    explicit MipsMCAsmInfo(StringRef TT);
+    explicit MipsMCAsmInfo(const Triple &TheTriple);
   };
 
 } // namespace llvm
diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
index 2e3179ac28d..54d88632abd 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsMCTargetDesc.cpp
@@ -75,7 +75,8 @@ static MCSubtargetInfo *createMipsMCSubtargetInfo(StringRef TT, StringRef CPU,
   return X;
 }
 
-static MCAsmInfo *createMipsMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
+static MCAsmInfo *createMipsMCAsmInfo(const MCRegisterInfo &MRI,
+                                      const Triple &TT) {
   MCAsmInfo *MAI = new MipsMCAsmInfo(TT);
 
   unsigned SP = MRI.getDwarfRegNum(Mips::SP, true);
diff --git a/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.cpp b/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.cpp
index b9df3d18f94..ef36c13b49f 100644
--- a/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.cpp
+++ b/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.cpp
@@ -25,8 +25,7 @@ static cl::opt<bool> CompileForDebugging("debug-compile",
 
 void NVPTXMCAsmInfo::anchor() {}
 
-NVPTXMCAsmInfo::NVPTXMCAsmInfo(StringRef TT) {
-  Triple TheTriple(TT);
+NVPTXMCAsmInfo::NVPTXMCAsmInfo(const Triple &TheTriple) {
   if (TheTriple.getArch() == Triple::nvptx64) {
     PointerSize = CalleeSaveStackSlotSize = 8;
   }
diff --git a/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.h b/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.h
index c3242866b17..b432e065c2f 100644
--- a/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.h
+++ b/llvm/lib/Target/NVPTX/MCTargetDesc/NVPTXMCAsmInfo.h
@@ -18,12 +18,12 @@
 
 namespace llvm {
 class Target;
-class StringRef;
+class Triple;
 
 class NVPTXMCAsmInfo : public MCAsmInfo {
   virtual void anchor();
 public:
-  explicit NVPTXMCAsmInfo(StringRef TT);
+  explicit NVPTXMCAsmInfo(const Triple &TheTriple);
 };
 } // namespace llvm
 
diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
index aba262c3b1f..4484d673112 100644
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCTargetDesc.cpp
@@ -69,8 +69,8 @@ static MCSubtargetInfo *createPPCMCSubtargetInfo(StringRef TT, StringRef CPU,
   return X;
 }
 
-static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
-  Triple TheTriple(TT);
+static MCAsmInfo *createPPCMCAsmInfo(const MCRegisterInfo &MRI,
+                                     const Triple &TheTriple) {
   bool isPPC64 = (TheTriple.getArch() == Triple::ppc64 ||
                   TheTriple.getArch() == Triple::ppc64le);
 
diff --git a/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp b/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
index 19d89fb27ca..028a86dfc7a 100644
--- a/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
+++ b/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.cpp
@@ -11,7 +11,7 @@
 #include "AMDGPUMCAsmInfo.h"
 
 using namespace llvm;
-AMDGPUMCAsmInfo::AMDGPUMCAsmInfo(StringRef &TT) : MCAsmInfoELF() {
+AMDGPUMCAsmInfo::AMDGPUMCAsmInfo(const Triple &TT) : MCAsmInfoELF() {
   HasSingleParameterDotFile = false;
   //===------------------------------------------------------------------===//
   MaxInstLength = 16;
diff --git a/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.h b/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.h
index 8f75c76c425..a5bac51e356 100644
--- a/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.h
+++ b/llvm/lib/Target/R600/MCTargetDesc/AMDGPUMCAsmInfo.h
@@ -17,7 +17,7 @@
 #include "llvm/MC/MCAsmInfoELF.h"
 namespace llvm {
 
-class StringRef;
+class Triple;
 
 // If you need to create another MCAsmInfo class, which inherits from MCAsmInfo,
 // you will need to make sure your new class sets PrivateGlobalPrefix to
@@ -26,7 +26,7 @@ class StringRef;
 // with 'L' as a local symbol.
 class AMDGPUMCAsmInfo : public MCAsmInfoELF {
 public:
-  explicit AMDGPUMCAsmInfo(StringRef &TT);
+  explicit AMDGPUMCAsmInfo(const Triple &TT);
 };
 } // namespace llvm
 #endif
diff --git a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
index 2189cb6638e..280c6d7937b 100644
--- a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
+++ b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.cpp
@@ -20,8 +20,7 @@ using namespace llvm;
 
 void SparcELFMCAsmInfo::anchor() {}
 
-SparcELFMCAsmInfo::SparcELFMCAsmInfo(StringRef TT) {
-  Triple TheTriple(TT);
+SparcELFMCAsmInfo::SparcELFMCAsmInfo(const Triple &TheTriple) {
   bool isV9 = (TheTriple.getArch() == Triple::sparcv9);
   IsLittleEndian = (TheTriple.getArch() == Triple::sparcel);
 
diff --git a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.h b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.h
index 84de55145b6..12386f14443 100644
--- a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.h
+++ b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCAsmInfo.h
@@ -17,12 +17,12 @@
 #include "llvm/MC/MCAsmInfoELF.h"
 
 namespace llvm {
-class StringRef;
+class Triple;
 
 class SparcELFMCAsmInfo : public MCAsmInfoELF {
   void anchor() override;
 public:
-  explicit SparcELFMCAsmInfo(StringRef TT);
+  explicit SparcELFMCAsmInfo(const Triple &TheTriple);
   const MCExpr*
   getExprForPersonalitySymbol(const MCSymbol *Sym, unsigned Encoding,
                               MCStreamer &Streamer) const override;
diff --git a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
index 4d5672e2955..d34c8797716 100644
--- a/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
+++ b/llvm/lib/Target/Sparc/MCTargetDesc/SparcMCTargetDesc.cpp
@@ -34,7 +34,7 @@ using namespace llvm;
 #include "SparcGenRegisterInfo.inc"
 
 static MCAsmInfo *createSparcMCAsmInfo(const MCRegisterInfo &MRI,
-                                       StringRef TT) {
+                                       const Triple &TT) {
   MCAsmInfo *MAI = new SparcELFMCAsmInfo(TT);
   unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
   MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, Reg, 0);
@@ -43,7 +43,7 @@ static MCAsmInfo *createSparcMCAsmInfo(const MCRegisterInfo &MRI,
 }
 
 static MCAsmInfo *createSparcV9MCAsmInfo(const MCRegisterInfo &MRI,
-                                       StringRef TT) {
+                                         const Triple &TT) {
   MCAsmInfo *MAI = new SparcELFMCAsmInfo(TT);
   unsigned Reg = MRI.getDwarfRegNum(SP::O6, true);
   MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, Reg, 2047);
diff --git a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp
index 0161d6263e7..b17977d41be 100644
--- a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp
+++ b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.cpp
@@ -13,7 +13,7 @@
 
 using namespace llvm;
 
-SystemZMCAsmInfo::SystemZMCAsmInfo(StringRef TT) {
+SystemZMCAsmInfo::SystemZMCAsmInfo(const Triple &TT) {
   PointerSize = 8;
   CalleeSaveStackSlotSize = 8;
   IsLittleEndian = false;
diff --git a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.h b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.h
index 19b5b4b0972..800f8923206 100644
--- a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.h
+++ b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCAsmInfo.h
@@ -14,11 +14,11 @@
 #include "llvm/Support/Compiler.h"
 
 namespace llvm {
-class StringRef;
+class Triple;
 
 class SystemZMCAsmInfo : public MCAsmInfoELF {
 public:
-  explicit SystemZMCAsmInfo(StringRef TT);
+  explicit SystemZMCAsmInfo(const Triple &TT);
 };
 
 } // end namespace llvm
diff --git a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
index 8c2075afe50..92681cf6e44 100644
--- a/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
+++ b/llvm/lib/Target/SystemZ/MCTargetDesc/SystemZMCTargetDesc.cpp
@@ -132,7 +132,7 @@ unsigned SystemZMC::getFirstReg(unsigned Reg) {
 }
 
 static MCAsmInfo *createSystemZMCAsmInfo(const MCRegisterInfo &MRI,
-                                         StringRef TT) {
+                                         const Triple &TT) {
   MCAsmInfo *MAI = new SystemZMCAsmInfo(TT);
   MCCFIInstruction Inst =
       MCCFIInstruction::createDefCfa(nullptr,
diff --git a/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp b/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
index 8e3c72158fc..cc98e55dc69 100644
--- a/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
+++ b/llvm/lib/Target/X86/MCTargetDesc/X86MCTargetDesc.cpp
@@ -115,8 +115,8 @@ static MCRegisterInfo *createX86MCRegisterInfo(StringRef TT) {
   return X;
 }
 
-static MCAsmInfo *createX86MCAsmInfo(const MCRegisterInfo &MRI, StringRef TT) {
-  Triple TheTriple(TT);
+static MCAsmInfo *createX86MCAsmInfo(const MCRegisterInfo &MRI,
+                                     const Triple &TheTriple) {
   bool is64Bit = TheTriple.getArch() == Triple::x86_64;
 
   MCAsmInfo *MAI;
diff --git a/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.cpp b/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.cpp
index f2d2b37d6f2..3178a4edbb3 100644
--- a/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.cpp
+++ b/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.cpp
@@ -8,12 +8,11 @@
 //===----------------------------------------------------------------------===//
 
 #include "XCoreMCAsmInfo.h"
-#include "llvm/ADT/StringRef.h"
 using namespace llvm;
 
 void XCoreMCAsmInfo::anchor() { }
 
-XCoreMCAsmInfo::XCoreMCAsmInfo(StringRef TT) {
+XCoreMCAsmInfo::XCoreMCAsmInfo(const Triple &TT) {
   SupportsDebugInformation = true;
   Data16bitsDirective = "\t.short\t";
   Data32bitsDirective = "\t.long\t";
diff --git a/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.h b/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.h
index 26df211eece..39581e424e8 100644
--- a/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.h
+++ b/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCAsmInfo.h
@@ -17,14 +17,14 @@
 #include "llvm/MC/MCAsmInfoELF.h"
 
 namespace llvm {
-  class StringRef;
-  class Target;
+class Triple;
 
-  class XCoreMCAsmInfo : public MCAsmInfoELF {
-    void anchor() override;
-  public:
-    explicit XCoreMCAsmInfo(StringRef TT);
-  };
+class XCoreMCAsmInfo : public MCAsmInfoELF {
+  void anchor() override;
+
+public:
+  explicit XCoreMCAsmInfo(const Triple &TT);
+};
 
 } // namespace llvm
 
diff --git a/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp b/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp
index ce0d39fe407..f0e459620c9 100644
--- a/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp
+++ b/llvm/lib/Target/XCore/MCTargetDesc/XCoreMCTargetDesc.cpp
@@ -54,7 +54,7 @@ static MCSubtargetInfo *createXCoreMCSubtargetInfo(StringRef TT, StringRef CPU,
 }
 
 static MCAsmInfo *createXCoreMCAsmInfo(const MCRegisterInfo &MRI,
-                                       StringRef TT) {
+                                       const Triple &TT) {
   MCAsmInfo *MAI = new XCoreMCAsmInfo(TT);
 
   // Initial state of the frame pointer is SP.