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For ARM/Darwin, add a dwarf entry indicating whether a function is arm or thumb

Browse Source 
rdar://8202967

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109057 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2010-07-21 23:03:52 +00:00
parent 908bafe6fa
commit 917290043f
3 changed files with 25 additions and 0 deletions
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4
include/llvm/CodeGen/AsmPrinter.h
View File

@ -369,6 +369,10 @@ namespace llvm {
/// operands.
virtual MachineLocation getDebugValueLocation(const MachineInstr *MI) const;
/// getISAEncoding - Get the value for DW_AT_APPLE_isa. Zero if no isa
/// encoding specified.
virtual unsigned getISAEncoding() { return 0; }
//===------------------------------------------------------------------===//
// Dwarf Lowering Routines
//===------------------------------------------------------------------===//

4
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
View File

@ -1336,6 +1336,10 @@ DIE *DwarfDebug::createSubprogramDIE(const DISubprogram &SP, bool MakeDecl) {
if (SP.isOptimized())
addUInt(SPDie, dwarf::DW_AT_APPLE_optimized, dwarf::DW_FORM_flag, 1);
if (unsigned isa = Asm->getISAEncoding()) {
addUInt(SPDie, dwarf::DW_AT_APPLE_isa, dwarf::DW_FORM_flag, isa);
}
// DW_TAG_inlined_subroutine may refer to this DIE.
SPCU->insertDIE(SP, SPDie);

17
lib/Target/ARM/ARMAsmPrinter.cpp
View File

@ -56,6 +56,15 @@ static cl::opt<bool>
EnableMCInst("enable-arm-mcinst-printer", cl::Hidden,
cl::desc("enable experimental asmprinter gunk in the arm backend"));
namespace llvm {
namespace ARM {
enum DW_ISA {
DW_ISA_ARM_thumb = 1,
DW_ISA_ARM_arm = 2
};
}
}
namespace {
class ARMAsmPrinter : public AsmPrinter {
@ -196,6 +205,14 @@ namespace {
void EmitStartOfAsmFile(Module &M);
void EmitEndOfAsmFile(Module &M);
virtual unsigned getISAEncoding() {
// ARM/Darwin adds ISA to the DWARF info for each function.
if (!Subtarget->isTargetDarwin())
return 0;
return Subtarget->isThumb() ?
llvm::ARM::DW_ISA_ARM_thumb : llvm::ARM::DW_ISA_ARM_arm;
}
MCSymbol *GetARMSetPICJumpTableLabel2(unsigned uid, unsigned uid2,
const MachineBasicBlock *MBB) const;
MCSymbol *GetARMJTIPICJumpTableLabel2(unsigned uid, unsigned uid2) const;