X86/exp-asm-printer: Lower MachineOperand::MO_JumpTableIndex to MCOperand.
- Down to 7 failures on 403.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@80605 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
index 60d8238..078750c 100644
--- a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
+++ b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
@@ -24,6 +24,7 @@
#include "llvm/DerivedTypes.h"
#include "llvm/Module.h"
#include "llvm/Type.h"
+#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Assembly/Writer.h"
@@ -810,7 +811,7 @@
}
MCOperand X86ATTAsmPrinter::
-LowerExternalSymbolOperand(const MachineOperand &MO){
+LowerExternalSymbolOperand(const MachineOperand &MO) {
std::string Name = Mang->makeNameProper(MO.getSymbolName());
if (MO.getTargetFlags() == X86II::MO_DARWIN_STUB) {
FnStubs[Name+"$stub"] = Name;
@@ -829,6 +830,35 @@
return MCOperand::CreateExpr(Expr);
}
+MCOperand X86ATTAsmPrinter::LowerJumpTableOperand(const MachineOperand &MO) {
+ SmallString<256> Name;
+ raw_svector_ostream(Name) << MAI->getPrivateGlobalPrefix() << "JTI"
+ << getFunctionNumber() << '_' << MO.getIndex();
+
+ MCSymbol *NegatedSymbol = 0;
+ switch (MO.getTargetFlags()) {
+ default:
+ llvm_unreachable("Unknown target flag on GV operand");
+ case X86II::MO_PIC_BASE_OFFSET:
+ case X86II::MO_DARWIN_NONLAZY_PIC_BASE:
+ case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE:
+ // Subtract the pic base.
+ NegatedSymbol = GetPICBaseSymbol();
+ break;
+ }
+
+ // Create a symbol for the name.
+ MCSymbol *Sym = OutContext.GetOrCreateSymbol(Name.str());
+ // FIXME: We would like an efficient form for this, so we don't have to do a
+ // lot of extra uniquing.
+ const MCExpr *Expr = MCSymbolRefExpr::Create(Sym, OutContext);
+ if (NegatedSymbol)
+ Expr = MCBinaryExpr::CreateSub(Expr, MCSymbolRefExpr::Create(NegatedSymbol,
+ OutContext),
+ OutContext);
+ return MCOperand::CreateExpr(Expr);
+}
+
/// printMachineInstruction -- Print out a single X86 LLVM instruction MI in
/// AT&T syntax to the current output stream.
@@ -895,6 +925,9 @@
O.flush();
errs() << "Cannot lower operand #" << i << " of :" << *MI;
llvm_unreachable("Unimp");
+ case MachineOperand::MO_JumpTableIndex:
+ MCOp = LowerJumpTableOperand(MO);
+ break;
case MachineOperand::MO_Register:
MCOp = MCOperand::CreateReg(MO.getReg());
break;
diff --git a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
index ef8ba6c..56cf255 100644
--- a/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
+++ b/lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.h
@@ -69,6 +69,7 @@
// New MCInst printing stuff.
void printInstruction(const MCInst *MI);
MCSymbol *GetPICBaseSymbol();
+ MCOperand LowerJumpTableOperand(const MachineOperand &MO);
MCOperand LowerGlobalAddressOperand(const MachineOperand &MO);
MCOperand LowerExternalSymbolOperand(const MachineOperand &MO);