[LLVMdev] LowerSetJmp Dead?

[Chris Lattner]

On Aug 3, 2011, at 2:32 PM, Bill Wendling wrote:

> This pains me to ask, because I'm the original author of this pass, but is the LowerSetJmp pass dead? I created a simple program, manually converted it to use the @llvm.setjmp/@llvm.longjmp intrinsics, ran "opt -lowersetjmp" on it, and tried to compile it only to get this:

I think that the CBE still uses it, but it can't use it in a successful way.  I'm in favor of zapping it.  Please mention it in the release notes.

-Chris

> 
> Undefined symbols for architecture x86_64:
>  "___llvm_sjljeh_throw_longjmp", referenced from:
>      foo()    in ccf8Gf0w.o
>  "___llvm_sjljeh_init_setjmpmap", referenced from:
>      _main in ccf8Gf0w.o
>  "___llvm_sjljeh_add_setjmp_to_map", referenced from:
>      _main in ccf8Gf0w.o
>  "___llvm_sjljeh_destroy_setjmpmap", referenced from:
>      _main in ccf8Gf0w.o
>  "___llvm_sjljeh_is_longjmp_exception", referenced from:
>      _main in ccf8Gf0w.o
>  "___llvm_sjljeh_get_longjmp_value", referenced from:
>      _main in ccf8Gf0w.o
>  "___llvm_sjljeh_try_catching_longjmp_exception", referenced from:
>      _main in ccf8Gf0w.o
> 
> A quick scan through the sources showed none of these symbols in it.
> 
> Should we just get rid of this pass and the intrinsics?
> 
> -bw
> 
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