[Polly] Remove unwanted --check-prefix=CHECK from unit tests. NFC.

[mgrang]

Summary

Removed unwanted --check-prefix=CHECK from the following unit tests:

DeadCodeElimination/dead_iteration_elimination.ll
Isl/CodeGen/simple_vec_cast.ll

Patch by: Mandeep Singh Grang (mgrang)

[grosser]

Thanks for this patch! Looks good to me.

Do you have commit rights to commit this patch yourself?

[mgrang]

Rebased commit.

[mgrang]

Thanks Tobias.
Yes, I have commit rights however the commit failed because my sources were not up-to-date. I have rebased and pushed a new patch.

[grosser]

Cool. Just commit the updated version than. Thank you!

polly/trunk/test/DeadCodeElimination/dead_iteration_elimination.ll

-; RUN: opt -S %loadPolly -basicaa -polly-dependences-analysis-type=value-based -polly-dce -polly-dce-precise-steps=2 -polly-ast -analyze < %s | FileCheck %s -check-prefix=CHECK
+; RUN: opt -S %loadPolly -basicaa -polly-dependences-analysis-type=value-based -polly-dce -polly-dce-precise-steps=2 -polly-ast -analyze < %s | FileCheck %s
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 ;
 ; for(i = 0; i < 200; i++ )
 ;   A[i] = 2;
 ;
 ; for (i = 0; i < 50; i++ )
 ;   A[i]  = 5;
 ;

polly/trunk/test/Isl/CodeGen/simple_vec_cast.ll

-; RUN: opt %loadPolly -basicaa -polly-codegen -polly-vectorizer=polly -dce -S < %s | FileCheck %s -check-prefix=CHECK
+; RUN: opt %loadPolly -basicaa -polly-codegen -polly-vectorizer=polly -dce -S < %s | FileCheck %s
 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
 
 @A = common global [1024 x float] zeroinitializer, align 16
 @B = common global [1024 x double] zeroinitializer, align 16
 
 define void @simple_vec_const() nounwind {
 bb:
   br label %bb1