Rip all of the global variable lowering logic out of TargetAsmInfo. Since

it is highly specific to the object file that will be generated in the end,
this introduces a new TargetLoweringObjectFile interface that is implemented
for each of ELF/MachO/COFF/Alpha/PIC16 and XCore.

Though still is still a brutal and ugly refactoring, this is a major step
towards goodness.

This patch also:
1. fixes a bunch of dangling pointer problems in the PIC16 backend.
2. disables the TargetLowering copy ctor which PIC16 was accidentally using.
3. gets us closer to xcore having its own crazy target section flags and
   pic16 not having to shadow sections with its own objects.
4. fixes wierdness where ELF targets would set CStringSection but not
   CStringSection_.  Factor the code better.
5. fixes some bugs in string lowering on ELF targets.

llvm-svn: 77294

1 files changed, 7 insertions, 6 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index f26fb0d6fe9..fea00f4f954 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -17,9 +17,10 @@
 #include "llvm/Support/Timer.h"
 #include "llvm/System/Path.h"
 #include "llvm/Target/TargetAsmInfo.h"
-#include "llvm/Target/TargetRegisterInfo.h"
 #include "llvm/Target/TargetData.h"
 #include "llvm/Target/TargetFrameInfo.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetRegisterInfo.h"
 using namespace llvm;
 
 static TimerGroup &getDwarfTimerGroup() {
@@ -1328,7 +1329,7 @@ void DwarfDebug::BeginModule(Module *M, MachineModuleInfo *mmi) {
   MMI->setDebugInfoAvailability(true);
 
   // Prime section data.
-  SectionMap.insert(TAI->getTextSection());
+  SectionMap.insert(Asm->getObjFileLowering().getTextSection());
 
   // Print out .file directives to specify files for .loc directives. These are
   // printed out early so that they precede any .loc directives.
@@ -1363,9 +1364,9 @@ void DwarfDebug::EndModule() {
     DebugTimer->startTimer();
 
   // Standard sections final addresses.
-  Asm->SwitchToSection(TAI->getTextSection());
+  Asm->SwitchToSection(Asm->getObjFileLowering().getTextSection());
   EmitLabel("text_end", 0);
-  Asm->SwitchToSection(TAI->getDataSection());
+  Asm->SwitchToSection(Asm->getObjFileLowering().getDataSection());
   EmitLabel("data_end", 0);
 
   // End text sections.
@@ -1893,9 +1894,9 @@ void DwarfDebug::EmitInitial() {
   Asm->SwitchToDataSection(TAI->getDwarfRangesSection());
   EmitLabel("section_ranges", 0);
 
-  Asm->SwitchToSection(TAI->getTextSection());
+  Asm->SwitchToSection(Asm->getObjFileLowering().getTextSection());
   EmitLabel("text_begin", 0);
-  Asm->SwitchToSection(TAI->getDataSection());
+  Asm->SwitchToSection(Asm->getObjFileLowering().getDataSection());
   EmitLabel("data_begin", 0);
 }