Let some more tests ignore expected output on stderr.

Also, use > %t instead of -o %t for output in one test since that also works
when %t already exists.

This fixes 6 testcases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52178 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/BlockPlacement/basictest.ll

@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | opt -block-placement -disable-output -print
+; RUN: llvm-as < %s | opt -block-placement -disable-output -print 2> /dev/null
 
 define i32 @test() {
         br i1 true, label %X, label %Y