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add a new MachineJumpTableInfo::getJTISymbol method,

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use it to implement the default TargetLowering::getPICJumpTableRelocBaseExpr


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94523 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-01-26 05:58:28 +00:00
parent 13e97a29d9
commit beeb93e6ba
4 changed files with 46 additions and 20 deletions
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18
lib/CodeGen/AsmPrinter/AsmPrinter.cpp
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@@ -527,6 +527,8 @@ void AsmPrinter::EmitJumpTableInfo(MachineFunction &MF) {
// the assembler and linker the extents of the jump table object. The
// second label is actually referenced by the code.
if (JTInDiffSection && MAI->getLinkerPrivateGlobalPrefix()[0])
// FIXME: This doesn't have to have any specific name, just any randomly
// named and numbered 'l' label would work. Simplify GetJTISymbol.
OutStreamer.EmitLabel(GetJTISymbol(i, true));
OutStreamer.EmitLabel(GetJTISymbol(i));
@@ -1389,12 +1391,7 @@ MCSymbol *AsmPrinter::GetCPISymbol(unsigned CPID) const {
/// GetJTISymbol - Return the symbol for the specified jump table entry.
MCSymbol *AsmPrinter::GetJTISymbol(unsigned JTID, bool isLinkerPrivate) const {
const char *Prefix = isLinkerPrivate ? MAI->getLinkerPrivateGlobalPrefix() :
MAI->getPrivateGlobalPrefix();
SmallString<60> Name;
raw_svector_ostream(Name) << Prefix << "JTI" << getFunctionNumber() << '_'
<< JTID;
return OutContext.GetOrCreateSymbol(Name.str());
return MF->getJumpTableInfo()->getJTISymbol(JTID, OutContext,isLinkerPrivate);
}
/// GetJTSetSymbol - Return the symbol for the specified jump table .set
@@ -1549,12 +1546,13 @@ void AsmPrinter::EmitBasicBlockStart(const MachineBasicBlock *MBB) const {
/// specified MachineBasicBlock for a jumptable entry.
void AsmPrinter::printPICJumpTableSetLabel(unsigned uid,
const MachineBasicBlock *MBB) const {
if (!MAI->getSetDirective())
return;
const MachineJumpTableInfo *MJTI = MF->getJumpTableInfo();
const TargetLowering *TLI = TM.getTargetLowering();
O << MAI->getSetDirective() << ' ' << MAI->getPrivateGlobalPrefix()
<< *GetJTSetSymbol(uid, MBB->getNumber()) << ','
<< *MBB->getSymbol(OutContext) << '-' << *GetJTISymbol(uid) << '\n';
<< *MBB->getSymbol(OutContext) << '-'
<< *TLI->getPICJumpTableRelocBaseExpr(MJTI,uid,OutContext)
<< '\n';
}
void AsmPrinter::printVisibility(MCSymbol *Sym, unsigned Visibility) const {