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remove the dead PreferredEHDataFormat TAI hook: its now dead

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even considering #if 0 code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77856 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2009-08-02 04:02:52 +00:00
parent ad88bc4076
commit b6d667403f
5 changed files with 3 additions and 91 deletions
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4
docs/WritingAnLLVMBackend.html
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@ -2080,8 +2080,8 @@ SparcTargetAsmInfo::SparcTargetAsmInfo(const SparcTargetMachine &TM) {
<p>
The X86 assembly printer implementation (<tt>X86TargetAsmInfo</tt>) is an
example where the target specific <tt>TargetAsmInfo</tt> class uses overridden
methods: <tt>ExpandInlineAsm</tt> and <tt>PreferredEHDataFormat</tt>.
example where the target specific <tt>TargetAsmInfo</tt> class uses an
overridden methods: <tt>ExpandInlineAsm</tt>.
</p>
<p>

5
include/llvm/Target/TargetAsmInfo.h
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@ -383,11 +383,6 @@ namespace llvm {
/// length.
virtual unsigned getInlineAsmLength(const char *Str) const;
/// PreferredEHDataFormat - This hook allows the target to select data
/// format used for encoding pointers in exception handling data.
virtual unsigned PreferredEHDataFormat() const;
/// getSLEB128Size - Compute the number of bytes required for a signed
/// leb128 value.
static unsigned getSLEB128Size(int Value);

4
lib/Target/TargetAsmInfo.cpp
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@ -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 {

72
lib/Target/X86/X86TargetAsmInfo.cpp
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@ -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) {

9
lib/Target/X86/X86TargetAsmInfo.h
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@ -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);