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Reverse sense of unwind-tables option. This means
stack tracebacks on Darwin x86-64 won't work by default; nevertheless, everybody but me thinks this is a good idea. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49663 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -74,10 +74,9 @@ namespace llvm {
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/// be emitted.
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extern bool ExceptionHandling;
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/// UnwindTablesOptional - This flag indicates that unwind tables need not
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/// be emitted for all functions. Exception handling may still require them
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/// for some functions.
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extern bool UnwindTablesOptional;
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/// UnwindTablesMandatory - This flag indicates that unwind tables should
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/// be emitted for all functions.
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extern bool UnwindTablesMandatory;
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/// PerformTailCallOpt - This flag is enabled when -tailcallopt is specified
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/// on the commandline. When the flag is on, the target will perform tail call
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@ -2906,10 +2906,10 @@ private:
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// If there are no calls then you can't unwind. This may mean we can
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// omit the EH Frame, but some environments do not handle weak absolute
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// symbols.
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// If UnwindTablesOptional is not set we cannot do this optimization; the
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// If UnwindTablesMandatory is set we cannot do this optimization; the
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// unwind info is to be available for non-EH uses.
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if (!EHFrameInfo.hasCalls &&
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UnwindTablesOptional &&
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!UnwindTablesMandatory &&
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((linkage != Function::WeakLinkage &&
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linkage != Function::LinkOnceLinkage) ||
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!TAI->getWeakDefDirective() ||
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@ -3432,7 +3432,7 @@ public:
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// See if we need frame move info.
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if (MMI->hasDebugInfo() ||
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!MF->getFunction()->doesNotThrow() ||
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!UnwindTablesOptional)
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UnwindTablesMandatory)
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shouldEmitMoves = true;
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if (shouldEmitMoves || shouldEmitTable)
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@ -949,7 +949,7 @@ PPCRegisterInfo::emitPrologue(MachineFunction &MF) const {
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MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
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bool needsFrameMoves = (MMI && MMI->hasDebugInfo()) ||
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!MF.getFunction()->doesNotThrow() ||
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!UnwindTablesOptional;
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UnwindTablesMandatory;
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// Prepare for frame info.
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unsigned FrameLabelId = 0;
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@ -31,7 +31,7 @@ namespace llvm {
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bool UseSoftFloat;
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bool NoZerosInBSS;
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bool ExceptionHandling;
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bool UnwindTablesOptional;
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bool UnwindTablesMandatory;
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Reloc::Model RelocationModel;
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CodeModel::Model CMModel;
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bool PerformTailCallOpt;
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@ -85,9 +85,9 @@ namespace {
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cl::location(ExceptionHandling),
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cl::init(false));
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cl::opt<bool, true>
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DisableUnwindTables("unwind-tables-optional",
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cl::desc("Generate unwinding tables only for functions that require them"),
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cl::location(UnwindTablesOptional),
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EnableUnwindTables("unwind-tables",
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cl::desc("Generate unwinding tables for all functions"),
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cl::location(UnwindTablesMandatory),
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cl::init(false));
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cl::opt<llvm::Reloc::Model, true>
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@ -506,7 +506,7 @@ void X86RegisterInfo::emitPrologue(MachineFunction &MF) const {
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MachineBasicBlock::iterator MBBI = MBB.begin();
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bool needsFrameMoves = (MMI && MMI->hasDebugInfo()) ||
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!Fn->doesNotThrow() ||
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!UnwindTablesOptional;
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UnwindTablesMandatory;
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// Prepare for frame info.
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unsigned FrameLabelId = 0;
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