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Add a form of EOL which emits the text version of a DWARF format encoding. This

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doesn't handle all values of the formatting. Those can be added as needed.

llvm-svn: 80427
This commit is contained in:
Bill Wendling 2009-08-29 12:17:53 +00:00
parent 2cc9f2ac91
commit 08c68ad0a9
2 changed files with 53 additions and 1 deletions
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4
include/llvm/CodeGen/AsmPrinter.h
View File

@ -268,7 +268,9 @@ namespace llvm {
void EOL() const;
void EOL(const std::string &Comment) const;
void EOL(const char* Comment) const;
void EOL(const std::string &Comment, unsigned Encoding) const;
void EOL(const char *Comment, unsigned Encoding) const;
/// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
/// unsigned leb128 value.
void EmitULEB128Bytes(unsigned Value) const;

50
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
View File

@ -604,6 +604,56 @@ void AsmPrinter::EOL(const char* Comment) const {
O << '\n';
}
static const char *DecodeDWARFEncoding(unsigned Encoding) {
switch (Encoding) {
case dwarf::DW_EH_PE_absptr:
return "absptr";
case dwarf::DW_EH_PE_omit:
return "omit";
case dwarf::DW_EH_PE_pcrel:
return "pcrel";
case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata4:
return "pcrel udata4";
case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4:
return "pcrel sdata4";
case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_udata8:
return "pcrel udata8";
case dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata8:
return "pcrel sdata8";
case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_udata4:
return "indirect pcrel udata4";
case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_sdata4:
return "indirect pcrel sdata4";
case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_udata8:
return "indirect pcrel udata8";
case dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |dwarf::DW_EH_PE_sdata8:
return "indirect pcrel sdata8";
}
return 0;
}
void AsmPrinter::EOL(const std::string &Comment, unsigned Encoding) const {
if (VerboseAsm && !Comment.empty()) {
EOL(Comment.c_str(), Encoding);
return;
}
O << '\n';
}
void AsmPrinter::EOL(const char *Comment, unsigned Encoding) const {
if (VerboseAsm && *Comment) {
O.PadToColumn(MAI->getCommentColumn());
O << MAI->getCommentString()
<< ' '
<< Comment;
if (const char *EncStr = DecodeDWARFEncoding(Encoding))
O << " (" << EncStr << ')';
}
O << '\n';
}
/// EmitULEB128Bytes - Emit an assembler byte data directive to compose an
/// unsigned leb128 value.
void AsmPrinter::EmitULEB128Bytes(unsigned Value) const {