Change these tests to feed the assembly files to opt directly, instead
of using llvm-as, now that opt supports this.

llvm-svn: 81226
diff --git a/llvm/test/Transforms/InstCombine/apint-add1.ll b/llvm/test/Transforms/InstCombine/apint-add1.ll
index 74280ee..3dcff56 100644
--- a/llvm/test/Transforms/InstCombine/apint-add1.ll
+++ b/llvm/test/Transforms/InstCombine/apint-add1.ll
@@ -1,7 +1,7 @@
 ; This test makes sure that add instructions are properly eliminated.
 ; This test is for Integer BitWidth <= 64 && BitWidth % 8 != 0.
 
-; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \
+; RUN: opt %s -instcombine | llvm-dis | \
 ; RUN:    grep -v OK | not grep add