move getDwarfExceptionSection from TAI to TLOF and rename it to
getLSDASection() to be more specific. This makes it pretty obvious
that the ELF LSDA section is being specified wrong in PIC mode. We're
probably getting a lot of startup-time relocations to a readonly page,
which is expensive and bad.
Someone who cares about ELF C++ should investigate this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77847 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfException.cpp b/lib/CodeGen/AsmPrinter/DwarfException.cpp
index 8eb97af..b051f71 100644
--- a/lib/CodeGen/AsmPrinter/DwarfException.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfException.cpp
@@ -20,10 +20,11 @@
#include "llvm/Support/Timer.h"
#include "llvm/Support/raw_ostream.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/TargetOptions.h"
+#include "llvm/Target/TargetRegisterInfo.h"
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
@@ -539,10 +540,8 @@
unsigned SizeAlign = (4 - TotalSize) & 3;
// Begin the exception table.
- //MCSection *LSDASection = TAI->getLSDASection();
- //Asm->SwitchToSection(LSDASection);
-
- Asm->SwitchToDataSection(TAI->getDwarfExceptionSection());
+ const MCSection *LSDASection = Asm->getObjFileLowering().getLSDASection();
+ Asm->SwitchToSection(LSDASection);
Asm->EmitAlignment(2, 0, 0, false);
O << "GCC_except_table" << SubprogramCount << ":\n";