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/2007-11-22-IcmpCrash.ll b/llvm/test/Transforms/InstCombine/2007-11-22-IcmpCrash.ll
index 1f211b6..65273cd 100644
--- a/llvm/test/Transforms/InstCombine/2007-11-22-IcmpCrash.ll
+++ b/llvm/test/Transforms/InstCombine/2007-11-22-IcmpCrash.ll
@@ -1,4 +1,4 @@
-; RUN: llvm-as < %s | opt -instcombine -disable-output
+; RUN: opt %s -instcombine -disable-output
 ; PR1817
 
 define i1 @test1(i32 %X) {