commit 3541af73b6b8a083cf2d7784438d60e8bcce3883
author Dale Johannesen <dalej@apple.com> Mon Apr 14 17:54:17 2008 +0000
committer Dale Johannesen <dalej@apple.com> Mon Apr 14 17:54:17 2008 +0000
tree 32d74280a098233806b9be1892de720a7d2275f5
parent ec1f1a8bd2db222548ec74458c6053124b3fc367

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

lib/CodeGen/DwarfWriter.cpp

diff --git a/lib/CodeGen/DwarfWriter.cpp b/lib/CodeGen/DwarfWriter.cpp
index 6cdc91e..3a3a04d 100644
--- a/lib/CodeGen/DwarfWriter.cpp
+++ b/lib/CodeGen/DwarfWriter.cpp
@@ -2906,10 +2906,10 @@
     // If there are no calls then you can't unwind.  This may mean we can
     // omit the EH Frame, but some environments do not handle weak absolute
     // symbols.  
-    // If UnwindTablesOptional is not set we cannot do this optimization; the
+    // If UnwindTablesMandatory is set we cannot do this optimization; the
     // unwind info is to be available for non-EH uses.
     if (!EHFrameInfo.hasCalls &&
-        UnwindTablesOptional &&
+        !UnwindTablesMandatory &&
         ((linkage != Function::WeakLinkage && 
           linkage != Function::LinkOnceLinkage) ||
          !TAI->getWeakDefDirective() ||
@@ -3432,7 +3432,7 @@
       // See if we need frame move info.
       if (MMI->hasDebugInfo() || 
           !MF->getFunction()->doesNotThrow() ||
-          !UnwindTablesOptional)
+          UnwindTablesMandatory)
         shouldEmitMoves = true;
 
       if (shouldEmitMoves || shouldEmitTable)

lib/Target/PowerPC/PPCRegisterInfo.cpp

diff --git a/lib/Target/PowerPC/PPCRegisterInfo.cpp b/lib/Target/PowerPC/PPCRegisterInfo.cpp
index 8b4fb6a..9840210 100644
--- a/lib/Target/PowerPC/PPCRegisterInfo.cpp
+++ b/lib/Target/PowerPC/PPCRegisterInfo.cpp
@@ -949,7 +949,7 @@
   MachineModuleInfo *MMI = MFI->getMachineModuleInfo();
   bool needsFrameMoves = (MMI && MMI->hasDebugInfo()) ||
        !MF.getFunction()->doesNotThrow() ||
-       !UnwindTablesOptional;
+       UnwindTablesMandatory;
   
   // Prepare for frame info.
   unsigned FrameLabelId = 0;

lib/Target/TargetMachine.cpp

diff --git a/lib/Target/TargetMachine.cpp b/lib/Target/TargetMachine.cpp
index 6f2f123..c252368 100644
--- a/lib/Target/TargetMachine.cpp
+++ b/lib/Target/TargetMachine.cpp
@@ -31,7 +31,7 @@
   bool UseSoftFloat;
   bool NoZerosInBSS;
   bool ExceptionHandling;
-  bool UnwindTablesOptional;
+  bool UnwindTablesMandatory;
   Reloc::Model RelocationModel;
   CodeModel::Model CMModel;
   bool PerformTailCallOpt;
@@ -85,9 +85,9 @@
                cl::location(ExceptionHandling),
                cl::init(false));
   cl::opt<bool, true>
-  DisableUnwindTables("unwind-tables-optional",
-               cl::desc("Generate unwinding tables only for functions that require them"),
-               cl::location(UnwindTablesOptional),
+  EnableUnwindTables("unwind-tables",
+               cl::desc("Generate unwinding tables for all functions"),
+               cl::location(UnwindTablesMandatory),
                cl::init(false));
 
   cl::opt<llvm::Reloc::Model, true>

lib/Target/X86/X86RegisterInfo.cpp

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 2668582..6d9183e 100644
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -506,7 +506,7 @@
   MachineBasicBlock::iterator MBBI = MBB.begin();
   bool needsFrameMoves = (MMI && MMI->hasDebugInfo()) || 
                           !Fn->doesNotThrow() ||
-                          !UnwindTablesOptional;
+                          UnwindTablesMandatory;
   
   // Prepare for frame info.
   unsigned FrameLabelId = 0;