updated numbered labels with meaningful names

Author: asastry108

llvm/test/Transforms/SimplifyCFG/preserve-llvm-loop-metadata-2.ll

@@ -1,8 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
 ; RUN: opt -passes='simplifycfg' -S < %s | FileCheck %s
 
-; CHECK: br i1 %2, label %loop2, label %loop1
-; CHECK-SAME: llvm.loop
 
 define void @test(i32 %1 ) {
 ; CHECK-LABEL: define void @test(
@@ -18,24 +16,24 @@ define void @test(i32 %1 ) {
 ; CHECK:       [[BB3]]:
 ; CHECK-NEXT:    ret void
 ;
-.critedge:
+entry:
   br label %loop1
 
-loop1:                                              ; preds = %loop2, .critedge
+loop1:                                              ; preds = %loop2, %entry 
   %111 = icmp eq i32 %1, 0
-  br i1 %111, label %112, label %156
+  br i1 %111, label %trampoline, label %retlabel
 
-112:                                              ; preds = %loop1
+trampoline:                                              ; preds = %loop1
   br label %loop2
 
-loop2:                                              ; preds = %149, %112
-  %148 = phi i1 [ false, %149 ], [ true, %112 ]
-  br i1 %148, label %149, label %loop1, !llvm.loop !32
+loop2:                                              ; preds = %loop2latch, %trampoline
+  %148 = phi i1 [ false, %loop2latch ], [ true, %trampoline ]
+  br i1 %148, label %loop2latch, label %loop1, !llvm.loop !32
 
-149:                                              ; preds = %loop2
+loop2latch:                                              ; preds = %loop2
   br label %loop2
 
-156:                                              ; preds = loop1
+retlabel:                                              ; preds = loop1
   ret void
 }