fix FileCheck variables for test added with r280677

The script (utils/update_test_checks.py) seems to have problems 
with variable names that start with the same string. 

llvm-svn: 280679
diff --git a/llvm/test/Transforms/InstCombine/icmp-div-constant.ll b/llvm/test/Transforms/InstCombine/icmp-div-constant.ll
index 98900ef..4c0a568 100644
--- a/llvm/test/Transforms/InstCombine/icmp-div-constant.ll
+++ b/llvm/test/Transforms/InstCombine/icmp-div-constant.ll
@@ -16,7 +16,7 @@
 ; CHECK-NEXT:    [[PHITMP1:%.*]] = sext i1 [[NOT_CMP]] to i32
 ; CHECK-NEXT:    br label %exit
 ; CHECK:       exit:
-; CHECK-NEXT:    [[PHI:%.*]] = phi i32 [ -1, %entry ], [ [[PHI:%.*]]tmp1, %then ]
+; CHECK-NEXT:    [[PHI:%.*]] = phi i32 [ -1, %entry ], [ [[PHITMP1]], %then ]
 ; CHECK-NEXT:    ret i32 [[PHI]]
 ;
 entry:
@@ -72,7 +72,7 @@
 ; CHECK-NEXT:    [[PHITMP1:%.*]] = sext i1 [[NOT_CMP]] to i32
 ; CHECK-NEXT:    br label %exit
 ; CHECK:       exit:
-; CHECK-NEXT:    [[PHI:%.*]] = phi i32 [ -1, %entry ], [ [[PHI:%.*]]tmp1, %then ]
+; CHECK-NEXT:    [[PHI:%.*]] = phi i32 [ -1, %entry ], [ [[PHITMP1]], %then ]
 ; CHECK-NEXT:    ret i32 [[PHI]]
 ;
 entry: