Remove br i1 undef in LoopIdiom directory

Author: leewei05

llvm/test/Transforms/LoopIdiom/non-canonical-loop.ll

@@ -5,15 +5,15 @@
 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-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
-define void @test(ptr %currMB) nounwind uwtable {
+define void @test(ptr %currMB, i1 %arg, ptr %arg2) nounwind uwtable {
 entry:
-  br i1 undef, label %start.exit, label %if.then.i
+  br i1 %arg, label %start.exit, label %if.then.i
 
 if.then.i:                                        ; preds = %entry
   unreachable
 
 start.exit:                       ; preds = %entry
-  indirectbr ptr undef, [label %0, label %for.bodyprime]
+  indirectbr ptr %arg2, [label %0, label %for.bodyprime]
 
 ; <label>:0                                       ; preds = %start.exit
   unreachable

llvm/test/Transforms/LoopIdiom/scev-invalidation_topmostloop.ll

@@ -2,9 +2,9 @@
 
 target triple = "x86_64-unknown-linux-gnu"
 
-; CHECK-LABEL: @f1()
+; CHECK-LABEL: @f1(i1 %arg)
 ; CHECK-NEXT: entry:
-define void @f1() {
+define void @f1(i1 %arg) {
 entry:
   br label %lbl1
 
@@ -15,10 +15,10 @@ for:                                              ; preds = %if.end, %lbl1
   br label %lor.end
 
 lor.end:                                          ; preds = %for
-  br i1 undef, label %for.end, label %if.end
+  br i1 %arg, label %for.end, label %if.end
 
 if.end:                                           ; preds = %lor.end
-  br i1 undef, label %lbl1, label %for
+  br i1 %arg, label %lbl1, label %for
 
 for.end:                                          ; preds = %lor.end
   ret void