Linux also does not require exception handling

moves in order to get correct debug info.  Since
I can't imagine how any target could possibly
be any different, I've just stripped out the
option: now all the world's like Darwin!

llvm-svn: 53134

llvm/include/llvm/Target/TargetAsmInfo.h

@@ -413,11 +413,6 @@ namespace llvm {
     ///
     const char *DwarfExceptionSection; // Defaults to ".gcc_except_table".
 
-    /// DebugInfoRequireFrameMoveInfo - Does debugging info require frame move
-    /// info.
-    ///
-    bool DebugInfoRequireFrameMoveInfo; // Defaults to "true"
-
     //===--- CBE Asm Translation Table -----------------------------------===//
 
     const char *const *AsmTransCBE; // Defaults to empty
@@ -703,9 +698,6 @@ namespace llvm {
     const char *getDwarfExceptionSection() const {
       return DwarfExceptionSection;
     }
-    bool doesDebugInfoRequireFrameMoveInfo() const {
-      return DebugInfoRequireFrameMoveInfo;
-    }
     const char *const *getAsmCBE() const {
       return AsmTransCBE;
     }

llvm/lib/CodeGen/DwarfWriter.cpp

@@ -3512,9 +3512,7 @@ public:
         shouldEmitTable = true;
 
       // See if we need frame move info.
-      if ((MMI->hasDebugInfo() && TAI->doesDebugInfoRequireFrameMoveInfo()) || 
-          !MF->getFunction()->doesNotThrow() ||
-          UnwindTablesMandatory)
+      if (!MF->getFunction()->doesNotThrow() || UnwindTablesMandatory)
         shouldEmitMoves = true;
 
       if (shouldEmitMoves || shouldEmitTable)

llvm/lib/Target/PowerPC/PPCTargetAsmInfo.cpp

@@ -66,7 +66,6 @@ DarwinTargetAsmInfo::DarwinTargetAsmInfo(const PPCTargetMachine &TM)
   DwarfEHFrameSection =
   ".section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support";
   DwarfExceptionSection = ".section __DATA,__gcc_except_tab";
-  DebugInfoRequireFrameMoveInfo = false;
   GlobalEHDirective = "\t.globl\t";
   SupportsWeakOmittedEHFrame = false;
 

llvm/lib/Target/TargetAsmInfo.cpp

@@ -111,7 +111,6 @@ TargetAsmInfo::TargetAsmInfo() :
   DwarfMacInfoSection(".debug_macinfo"),
   DwarfEHFrameSection(".eh_frame"),
   DwarfExceptionSection(".gcc_except_table"),
-  DebugInfoRequireFrameMoveInfo(true),
   AsmTransCBE(0) {
 }
 

llvm/lib/Target/X86/X86TargetAsmInfo.cpp

@@ -124,7 +124,6 @@ X86TargetAsmInfo::X86TargetAsmInfo(const X86TargetMachine &TM) {
     DwarfEHFrameSection =
     ".section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support";
     DwarfExceptionSection = ".section __DATA,__gcc_except_tab";
-    DebugInfoRequireFrameMoveInfo = false;
     break;
 
   case X86Subtarget::isELF: