Eliminate the use of gccas in the test suite.

llvm-svn: 34088
diff --git a/llvm/test/CFrontend/2006-03-03-MissingInitializer.c b/llvm/test/CFrontend/2006-03-03-MissingInitializer.c
index 5a2acb5..e791784 100644
--- a/llvm/test/CFrontend/2006-03-03-MissingInitializer.c
+++ b/llvm/test/CFrontend/2006-03-03-MissingInitializer.c
@@ -1,4 +1,5 @@
-// RUN: %llvmgcc %s -S -o - | gccas | llvm-dis | grep nate | grep 'global i32 0'
+// RUN: %llvmgcc %s -S -o - | llvm-as | opt -std-compile-opts | \
+// RUN:    llvm-dis | grep '@nate.*internal global i32 0'
 
 struct X { int *XX; int Y;};