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* Revert r148686 (and r148694, a fix to it) due to a serious layeringChandler Carruth2012-01-241-20/+5
| | | | | | | | | | | | | | | | | | violation -- MC cannot depend on CodeGen. Specifically, the MCTargetDesc component of each target is actually a subcomponent of the MC library. As such, it cannot depend on the target-independent code generator, because MC itself cannot depend on the target-independent code generator. This change moved a flag from the ARM MCTargetDesc file ARMMCAsmInfo.cpp to the CodeGen layer in ARMException.cpp, leaving behind an 'extern' to refer back to it. That layering order isn't viable givin the constraints outlined above. Commandline flags are designed to be static specifically to avoid these types of bugs. Fixing this is likely going to require some non-trivial refactoring. llvm-svn: 148759
* An option to selectively enable parts of ARM EHABI support.Evgeniy Stepanov2012-01-231-5/+20
| | | | | | | | This change adds an new value to the --arm-enable-ehabi option that disables emitting unwinding descriptors. This mode gives a working backtrace() without the (currently broken) exception support. llvm-svn: 148686
* Add MCObjectFileInfo and sink the MCSections initialization code fromEvan Cheng2011-07-201-1/+0
| | | | | | | | TargetLoweringObjectFileImpl down to MCObjectFileInfo. TargetAsmInfo is done to one last method. It's *almost* gone! llvm-svn: 135569
* Move getInitialFrameState from TargetFrameInfo to MCAsmInfo (suggestions forEvan Cheng2011-07-181-1/+0
| | | | | | better location welcome). llvm-svn: 135438
* Replace the -unwind-tables option with a per function flag. This is moreRafael Espindola2011-05-251-2/+2
| | | | | | | LTO friendly as we can now correctly merge files compiled with or without -fasynchronous-unwind-tables. llvm-svn: 132033
* Some first rudimentary support for ARM EHABI: print exception table in "text ↵Anton Korobeynikov2011-03-051-0/+87
mode". llvm-svn: 127099
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