diff --git a/test/CFrontend/2003-01-30-UnionInit.c b/test/CFrontend/2003-01-30-UnionInit.c
index 4fc2717346f..30f8659c5de 100644
--- a/test/CFrontend/2003-01-30-UnionInit.c
+++ b/test/CFrontend/2003-01-30-UnionInit.c
@@ -1,4 +1,4 @@
-// RUN: %llvmgcc -S %s -o - | llvm-as -f -o /dev/null
+// RUN: %llvmgcc -S %s -o /dev/null
 
 // XFAIL: linux,sun,darwin
 
diff --git a/test/CFrontend/2003-02-12-NonlocalGoto.c b/test/CFrontend/2003-02-12-NonlocalGoto.c
index b5813308a1d..81d97e06b5f 100644
--- a/test/CFrontend/2003-02-12-NonlocalGoto.c
+++ b/test/CFrontend/2003-02-12-NonlocalGoto.c
@@ -1,4 +1,4 @@
-// RUN: %llvmgcc -S %s -o - | llvm-as -f -o /dev/null
+// RUN: %llvmgcc -S %s -o /dev/null
 
 // XFAIL: *
 /* It is unlikely that LLVM will ever support nested functions, but if it does,
diff --git a/test/CFrontend/2003-08-30-AggregateInitializer.c b/test/CFrontend/2003-08-30-AggregateInitializer.c
index ab2f61012d7..6ba53c0fe44 100644
--- a/test/CFrontend/2003-08-30-AggregateInitializer.c
+++ b/test/CFrontend/2003-08-30-AggregateInitializer.c
@@ -1,4 +1,4 @@
-// RUN: %llvmgcc -S %s -o - | llvm-as -f -o /dev/null
+// RUN: %llvmgcc -S %s -o /dev/null
 
 // XFAIL: linux,sun,darwin
 struct istruct {
diff --git a/test/CFrontend/2004-01-01-UnknownInitSize.c b/test/CFrontend/2004-01-01-UnknownInitSize.c
index 863305ecb4e..c021c7a1083 100644
--- a/test/CFrontend/2004-01-01-UnknownInitSize.c
+++ b/test/CFrontend/2004-01-01-UnknownInitSize.c
@@ -1,4 +1,4 @@
-// RUN: %llvmgcc -S %s -o - | llvm-as -f -o /dev/null
+// RUN: %llvmgcc -S %s -o /dev/null
 
 /*
  * This regression test ensures that the C front end can compile initializers
diff --git a/test/CFrontend/2004-03-07-BitfieldCrash.c b/test/CFrontend/2004-03-07-BitfieldCrash.c
index f94c17e4dd9..e82ea139d41 100644
--- a/test/CFrontend/2004-03-07-BitfieldCrash.c
+++ b/test/CFrontend/2004-03-07-BitfieldCrash.c
@@ -1,4 +1,4 @@
-// RUN: %llvmgcc -S %s -o - | llvm-as -f -o /dev/null
+// RUN: %llvmgcc -S %s -o /dev/null
 
 /*
  * XFAIL: linux