[InstSimplify] regenerate checks using a script

I didn't notice any significant changes in the actual checks here;
all of these tests already used FileCheck, so a script can batch
update them in one shot.

This commit is just to show the value of automating this process: 
We have uniform formatting as opposed to a mish-mash of check
structure that changes based on individual prefs and the current
fashion. This makes it simpler to update when we find a bug or
make an enhancement.

llvm-svn: 264457
diff --git a/llvm/test/Transforms/InstSimplify/assume.ll b/llvm/test/Transforms/InstSimplify/assume.ll
index 4dd0a8f..2487a9c 100644
--- a/llvm/test/Transforms/InstSimplify/assume.ll
+++ b/llvm/test/Transforms/InstSimplify/assume.ll
@@ -1,12 +1,13 @@
+; NOTE: Assertions have been autogenerated by update_test_checks.py
 ; RUN: opt -instsimplify -S < %s | FileCheck %s
 
 define void @test1() {
+; CHECK-LABEL: @test1(
+; CHECK:         ret void
+;
   call void @llvm.assume(i1 1)
   ret void
 
-; CHECK-LABEL: @test1
-; CHECK-NOT: llvm.assume
-; CHECK: ret void
 }
 
 declare void @llvm.assume(i1) nounwind