diff --git a/llvm/test/FrontendC/2009-01-20-k8.c b/llvm/test/FrontendC/2009-01-20-k8.c
index 627ab65d161d..c7836dac12bc 100644
--- a/llvm/test/FrontendC/2009-01-20-k8.c
+++ b/llvm/test/FrontendC/2009-01-20-k8.c
@@ -1,3 +1,4 @@
 // RUN: %llvmgcc %s -S -march=k8
 // XTARGET: x86
+// XFAIL: *
 long double x;
diff --git a/llvm/test/FrontendC/2009-05-04-EnumInreg.c b/llvm/test/FrontendC/2009-05-04-EnumInreg.c
index 8a76f5f8e950..5619c0a276dd 100644
--- a/llvm/test/FrontendC/2009-05-04-EnumInreg.c
+++ b/llvm/test/FrontendC/2009-05-04-EnumInreg.c
@@ -1,4 +1,5 @@
 // RUN: %llvmgcc -S -m32 -mregparm=3 %s -emit-llvm -o - | grep {inreg %action}
+// XFAIL: *
 // XTARGET: x86
 // PR3967