[llvm] r183841 - Add artificial PRED_BAD to PPC::Predicate enumeration.

[Hal Finkel]

----- Original Message -----
> Author: wschmidt
> Date: Wed Jun 12 10:14:42 2013
> New Revision: 183841
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=183841&view=rev
> Log:
> Add artificial PRED_BAD to PPC::Predicate enumeration.
> 
> Allows returning a PPC::Predicate from a function with a no-predicate
> value possible.  Preparatory patch for fast-isel on PPC64 ELF.  No
> behavioral change intended.

Do we already have corresponding asserts in the asm printers, MC emitters, etc. to pick up illegal predicate values?

 -Hal

> 
> Modified:
>     llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h
> 
> Modified: llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h
> URL:
> http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h?rev=183841&r1=183840&r2=183841&view=diff
> ==============================================================================
> --- llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h
> (original)
> +++ llvm/trunk/lib/Target/PowerPC/MCTargetDesc/PPCPredicates.h Wed
> Jun 12 10:14:42 2013
> @@ -32,7 +32,8 @@ namespace PPC {
>      PRED_GT     = (1 << 5) | 12,
>      PRED_NE     = (2 << 5) |  4,
>      PRED_UN     = (3 << 5) | 12,
> -    PRED_NU     = (3 << 5) |  4
> +    PRED_NU     = (3 << 5) |  4,
> +    PRED_BAD    = 0
>    };
>    
>    /// Invert the specified predicate.  != -> ==, < -> >=.
> 
> 
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