Change tests from "opt %s" to "opt < %s" so that opt doesn't see the

input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8

test/Transforms/IndVarSimplify/exit_value_tests.ll

@@ -2,7 +2,7 @@
 ; these loops all have predictable exit values we can replace the use outside
 ; of the loop with a closed-form computation, making the loop dead.
 ;
-; RUN: opt %s -indvars -loop-deletion -simplifycfg | \
+; RUN: opt < %s -indvars -loop-deletion -simplifycfg | \
 ; RUN:   llvm-dis | not grep br
 
 define i32 @polynomial_constant() {