Eliminate more uses of llvm-as and llvm-dis.

llvm-svn: 81290
diff --git a/llvm/test/CodeGen/X86/shift-i256.ll b/llvm/test/CodeGen/X86/shift-i256.ll
index 4a29b86..d5f65a6 100644
--- a/llvm/test/CodeGen/X86/shift-i256.ll
+++ b/llvm/test/CodeGen/X86/shift-i256.ll
@@ -1,5 +1,5 @@
-; RUN: llvm-as < %s | llc -march=x86
-; RUN: llvm-as < %s | llc -march=x86-64
+; RUN: llc < %s -march=x86
+; RUN: llc < %s -march=x86-64
 
 define void @t(i256 %x, i256 %a, i256* nocapture %r) nounwind readnone {
 entry: