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Now that we have everything nicely factored (e.g. asmprinter is not

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doing global variable classification anymore) and hookized, sink almost
all target targets global variable emission code into AsmPrinter and out
of each target.

Some notes:

1. PIC16 does completely custom and crazy stuff, so it is not changed.
2. XCore has some custom handling for extra directives.  I'll look at it next.
3. This switches linux/ppc to use .globl instead of .global.  If .globl is
   actually wrong, let me know and I'll fix it.
4. This makes linux/ppc get a lot of random cases right which were obviously
   wrong before, it is probably now a bit healthier.
5. Blackfin will probably start getting .comm and other things that it didn't
   before.  If this is undesirable, it should explicitly opt out of these
   things by clearing the relevant fields of MCAsmInfo.

This leads to a nice diffstat:
 14 files changed, 127 insertions(+), 830 deletions(-)




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@93858 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-01-19 05:38:33 +00:00
parent 074f837bbb
commit 74bfe21b50
15 changed files with 128 additions and 831 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
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@@ -52,7 +52,6 @@ namespace {
void printOp(const MachineOperand &MO, bool IsCallOp = false);
void printOperand(const MachineInstr *MI, int opNum);
void printBaseOffsetPair(const MachineInstr *MI, int i, bool brackets=true);
void PrintGlobalVariable(const GlobalVariable *GVar);
bool runOnMachineFunction(MachineFunction &F);
void EmitStartOfAsmFile(Module &M);
@@ -198,62 +197,6 @@ void AlphaAsmPrinter::EmitStartOfAsmFile(Module &M) {
O << "\t.set noat\n";
}
void AlphaAsmPrinter::PrintGlobalVariable(const GlobalVariable *GVar) {
const TargetData *TD = TM.getTargetData();
if (!GVar->hasInitializer()) return; // External global require no code
// Check to see if this is a special global used by LLVM, if so, emit it.
if (EmitSpecialLLVMGlobal(GVar))
return;
MCSymbol *GVarSym = GetGlobalValueSymbol(GVar);
Constant *C = GVar->getInitializer();
unsigned Size = TD->getTypeAllocSize(C->getType());
unsigned Align = TD->getPreferredAlignmentLog(GVar);
// 0: Switch to section
OutStreamer.SwitchSection(getObjFileLowering().SectionForGlobal(GVar, Mang,
TM));
// 1: Check visibility
printVisibility(GVarSym, GVar->getVisibility());
// 2: Kind
switch (GVar->getLinkage()) {
case GlobalValue::LinkOnceAnyLinkage:
case GlobalValue::LinkOnceODRLinkage:
case GlobalValue::WeakAnyLinkage:
case GlobalValue::WeakODRLinkage:
case GlobalValue::CommonLinkage:
O << MAI->getWeakRefDirective() << *GVarSym << '\n';
break;
case GlobalValue::AppendingLinkage:
case GlobalValue::ExternalLinkage:
O << MAI->getGlobalDirective() << *GVarSym << '\n';
break;
case GlobalValue::InternalLinkage:
case GlobalValue::PrivateLinkage:
case GlobalValue::LinkerPrivateLinkage:
break;
default:
llvm_unreachable("Unknown linkage type!");
}
// 3: Type, Size, Align
if (MAI->hasDotTypeDotSizeDirective()) {
O << "\t.type\t" << *GVarSym << ", @object\n";
O << "\t.size\t" << *GVarSym << ", " << Size << "\n";
}
EmitAlignment(Align, GVar);
O << *GVarSym << ":\n";
EmitGlobalConstant(C);
O << '\n';
}
/// PrintAsmOperand - Print out an operand for an inline asm expression.
///
bool AlphaAsmPrinter::PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,