From 24287ddb81aca5d2579dc30ebd3528d2521529d7 Mon Sep 17 00:00:00 2001
From: Anton Korobeynikov <asl@math.spbu.ru>
Date: Tue, 19 Dec 2006 21:04:20 +0000
Subject: [PATCH] Fix for PR1059: http://llvm.org/PR1059

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32685 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/AsmPrinter.cpp            |  9 ++++++---
 lib/Target/X86/X86IntelAsmPrinter.cpp | 11 +++++++++--
 lib/Target/X86/X86TargetAsmInfo.cpp   |  1 +
 3 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/lib/CodeGen/AsmPrinter.cpp b/lib/CodeGen/AsmPrinter.cpp
index 833ed28f085..82e110a2753 100644
--- a/lib/CodeGen/AsmPrinter.cpp
+++ b/lib/CodeGen/AsmPrinter.cpp
@@ -214,14 +214,17 @@ void AsmPrinter::EmitJumpTableInfo(MachineJumpTableInfo *MJTI,
   // Pick the directive to use to print the jump table entries, and switch to 
   // the appropriate section.
   TargetLowering *LoweringInfo = TM.getTargetLowering();
-  
-  if (IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) {
+
+  const char* JumpTableDataSection = TAI->getJumpTableDataSection();  
+  if ((IsPic && !(LoweringInfo && LoweringInfo->usesGlobalOffsetTable())) ||
+     !JumpTableDataSection) {
     // In PIC mode, we need to emit the jump table to the same section as the
     // function body itself, otherwise the label differences won't make sense.
+    // We should also do if the section name is NULL.
     const Function *F = MF.getFunction();
     SwitchToTextSection(getSectionForFunction(*F).c_str(), F);
   } else {
-    SwitchToDataSection(TAI->getJumpTableDataSection());
+    SwitchToDataSection(JumpTableDataSection);
   }
   
   EmitAlignment(Log2_32(MJTI->getAlignment()));
diff --git a/lib/Target/X86/X86IntelAsmPrinter.cpp b/lib/Target/X86/X86IntelAsmPrinter.cpp
index dd73a2d3181..142177c4ee2 100755
--- a/lib/Target/X86/X86IntelAsmPrinter.cpp
+++ b/lib/Target/X86/X86IntelAsmPrinter.cpp
@@ -113,7 +113,7 @@ void X86IntelAsmPrinter::printOp(const MachineOperand &MO,
                                  const char *Modifier) {
   const MRegisterInfo &RI = *TM.getRegisterInfo();
   switch (MO.getType()) {
-  case MachineOperand::MO_Register:
+  case MachineOperand::MO_Register: {      
     if (MRegisterInfo::isPhysicalRegister(MO.getReg())) {
       unsigned Reg = MO.getReg();
       if (Modifier && strncmp(Modifier, "subreg", strlen("subreg")) == 0) {
@@ -126,13 +126,20 @@ void X86IntelAsmPrinter::printOp(const MachineOperand &MO,
     } else
       O << "reg" << MO.getReg();
     return;
-
+  }
   case MachineOperand::MO_Immediate:
     O << MO.getImmedValue();
     return;
   case MachineOperand::MO_MachineBasicBlock:
     printBasicBlockLabel(MO.getMachineBasicBlock());
     return;
+  case MachineOperand::MO_JumpTableIndex: {
+    bool isMemOp  = Modifier && !strcmp(Modifier, "mem");
+    if (!isMemOp) O << "OFFSET ";
+    O << TAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+      << "_" << MO.getJumpTableIndex();
+    return;
+  }    
   case MachineOperand::MO_ConstantPoolIndex: {
     bool isMemOp  = Modifier && !strcmp(Modifier, "mem");
     if (!isMemOp) O << "OFFSET ";
diff --git a/lib/Target/X86/X86TargetAsmInfo.cpp b/lib/Target/X86/X86TargetAsmInfo.cpp
index ed9f1ac3132..71640380348 100644
--- a/lib/Target/X86/X86TargetAsmInfo.cpp
+++ b/lib/Target/X86/X86TargetAsmInfo.cpp
@@ -152,6 +152,7 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
     
     TextSection = "_text";
     DataSection = "_data";
+    JumpTableDataSection = NULL;
     SwitchToSectionDirective = "";
     TextSectionStartSuffix = "\tsegment 'CODE'";
     DataSectionStartSuffix = "\tsegment 'DATA'";