remove the dead PreferredEHDataFormat TAI hook: its now dead

even considering #if 0 code.

llvm-svn: 77856

3 files changed, 1 insertions, 84 deletions

diff --git a/llvm/lib/Target/TargetAsmInfo.cpp b/llvm/lib/Target/TargetAsmInfo.cpp
index e961f2ad74f..cb835e630f0 100644
--- a/llvm/lib/Target/TargetAsmInfo.cpp
+++ b/llvm/lib/Target/TargetAsmInfo.cpp
@@ -140,10 +140,6 @@ unsigned TargetAsmInfo::getInlineAsmLength(const char *Str) const {
   return Length;
 }
 
-unsigned TargetAsmInfo::PreferredEHDataFormat() const {
-  return dwarf::DW_EH_PE_absptr;
-}
-
 unsigned TargetAsmInfo::getULEB128Size(unsigned Value) {
   unsigned Size = 0;
   do {
diff --git a/llvm/lib/Target/X86/X86TargetAsmInfo.cpp b/llvm/lib/Target/X86/X86TargetAsmInfo.cpp
index 4c9030845a0..db9cf905c4f 100644
--- a/llvm/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/llvm/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -86,14 +86,6 @@ X86DarwinTargetAsmInfo::X86DarwinTargetAsmInfo(const X86TargetMachine &TM):
   ".section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support";
 }
 
-unsigned X86DarwinTargetAsmInfo::PreferredEHDataFormat() const {
-  const X86Subtarget *Subtarget = &TM.getSubtarget<X86Subtarget>();
-  if (Subtarget->getDarwinVers() > 9)
-    return DW_EH_PE_pcrel | DW_EH_PE_indirect | DW_EH_PE_sdata4;
-
-  return DW_EH_PE_absptr;
-}
-
 const char *
 X86DarwinTargetAsmInfo::getEHGlobalPrefix() const {
   const X86Subtarget* Subtarget = &TM.getSubtarget<X86Subtarget>();
@@ -138,70 +130,6 @@ X86ELFTargetAsmInfo::X86ELFTargetAsmInfo(const X86TargetMachine &TM) :
     NonexecutableStackDirective = "\t.section\t.note.GNU-stack,\"\",@progbits";
 }
 
-unsigned
-X86ELFTargetAsmInfo::PreferredEHDataFormat() const {
-  CodeModel::Model CM = TM.getCodeModel();
-  bool is64Bit = TM.getSubtarget<X86Subtarget>().is64Bit();
-
-  if (TM.getRelocationModel() == Reloc::PIC_) {
-    unsigned Format = 0;
-
-    if (!is64Bit)
-      // 32 bit targets always encode pointers as 4 bytes
-      Format = DW_EH_PE_sdata4;
-    else {
-      // 64 bit targets encode pointers in 4 bytes iff:
-      // - code model is small OR
-      // - code model is medium and we're emitting externally visible symbols
-      //   or any code symbols
-      if (CM == CodeModel::Small || CM == CodeModel::Medium)
-        Format = DW_EH_PE_sdata4;
-      else
-        Format = DW_EH_PE_sdata8;
-    }
-
-    Format |= DW_EH_PE_indirect;
-    return (Format | DW_EH_PE_pcrel);
-  }
-  
-  if (is64Bit && CM == CodeModel::Small)
-    return DW_EH_PE_udata4;
-  return DW_EH_PE_absptr;
-}
-
-
-unsigned
-X86COFFTargetAsmInfo::PreferredEHDataFormat() const {
-  CodeModel::Model CM = TM.getCodeModel();
-  bool is64Bit = TM.getSubtarget<X86Subtarget>().is64Bit();
-
-  if (TM.getRelocationModel() == Reloc::PIC_) {
-    unsigned Format = 0;
-
-    if (!is64Bit)
-      // 32 bit targets always encode pointers as 4 bytes
-      Format = DW_EH_PE_sdata4;
-    else {
-      // 64 bit targets encode pointers in 4 bytes iff:
-      // - code model is small OR
-      // - code model is medium and we're emitting externally visible symbols
-      //   or any code symbols
-      if (CM == CodeModel::Small || CM == CodeModel::Medium)
-        Format = DW_EH_PE_sdata4;
-      else
-        Format = DW_EH_PE_sdata8;
-    }
-
-    Format |= DW_EH_PE_indirect;
-    return (Format | DW_EH_PE_pcrel);
-  }
-  
-  if (is64Bit && CM == CodeModel::Small)
-    return DW_EH_PE_udata4;
-  return DW_EH_PE_absptr;
-}
-
-
 
 X86WinTargetAsmInfo::X86WinTargetAsmInfo(const X86TargetMachine &TM):
   X86TargetAsmInfo<TargetAsmInfo>(TM) {
diff --git a/llvm/lib/Target/X86/X86TargetAsmInfo.h b/llvm/lib/Target/X86/X86TargetAsmInfo.h
index 3cc027185c9..f7113b3e5ed 100644
--- a/llvm/lib/Target/X86/X86TargetAsmInfo.h
+++ b/llvm/lib/Target/X86/X86TargetAsmInfo.h
@@ -37,21 +37,14 @@ namespace llvm {
 
   struct X86DarwinTargetAsmInfo : public X86TargetAsmInfo<DarwinTargetAsmInfo> {
     explicit X86DarwinTargetAsmInfo(const X86TargetMachine &TM);
-    virtual unsigned PreferredEHDataFormat() const;
     virtual const char *getEHGlobalPrefix() const;
   };
 
   struct X86ELFTargetAsmInfo : public X86TargetAsmInfo<ELFTargetAsmInfo> {
     explicit X86ELFTargetAsmInfo(const X86TargetMachine &TM);
-    virtual unsigned PreferredEHDataFormat() const;
   };
 
-  struct X86COFFTargetAsmInfo : public X86TargetAsmInfo<COFFTargetAsmInfo> {
-    explicit X86COFFTargetAsmInfo(const X86TargetMachine &TM) :
-      X86TargetAsmInfo<COFFTargetAsmInfo>(TM) {}
-    virtual unsigned PreferredEHDataFormat() const;
-  };
-  
+  typedef X86TargetAsmInfo<COFFTargetAsmInfo> X86COFFTargetAsmInfo;
 
   struct X86WinTargetAsmInfo : public X86TargetAsmInfo<TargetAsmInfo> {
     explicit X86WinTargetAsmInfo(const X86TargetMachine &TM);