[llvm-commits] [llvm-gcc-4.2] r70801 - /llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp

[Duncan Sands]

Hi Bill,

> Don'e create debug info for ObjC metadata.

how about setting DECL_ARTIFICIAL for such globals, and then teach
the backend not to output debug info for globals with DECL_ARTIFICIAL
set?

/* Used to indicate that this DECL represents a compiler-generated entity.  */
#define DECL_ARTIFICIAL(NODE) (DECL_COMMON_CHECK (NODE)->decl_common.artificial_flag)

Ciao,

Duncan.

> 
> Modified:
>     llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp
> 
> Modified: llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp?rev=70801&r1=70800&r2=70801&view=diff
> 
> ==============================================================================
> --- llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp (original)
> +++ llvm-gcc-4.2/trunk/gcc/llvm-backend.cpp Sun May  3 16:36:23 2009
> @@ -1390,8 +1390,15 @@
>    // No debug info for globals when optimization is on.  While this is
>    // something that would be accurate and useful to a user, it currently
>    // affects some optimizations that, e.g., count uses.
> -  if (TheDebugInfo && !optimize)
> -    TheDebugInfo->EmitGlobalVariable(GV, decl);
> +  if (TheDebugInfo && !optimize) {
> +    const char *Name = GV->getName().c_str();
> +    const char LPrefix[] = "\01L_OBJC_";
> +    const char lPrefix[] = "\01l_OBJC_";
> +
> +    if (strncmp(Name, LPrefix, sizeof(LPrefix) - 1) != 0 &&
> +        strncmp(Name, lPrefix, sizeof(lPrefix) - 1) != 0)
> +      TheDebugInfo->EmitGlobalVariable(GV, decl);
> +  }
>  
>    TREE_ASM_WRITTEN(decl) = 1;
>    timevar_pop(TV_LLVM_GLOBALS);
> 
> 
> _______________________________________________
> llvm-commits mailing list
> llvm-commits at cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
>