Index: include/llvm/Support/ARMTargetParser.def
===================================================================
--- include/llvm/Support/ARMTargetParser.def
+++ include/llvm/Support/ARMTargetParser.def
@@ -99,9 +99,9 @@
           (ARM::AEK_MP | ARM::AEK_VIRT | ARM::AEK_HWDIVARM | ARM::AEK_HWDIV |
            ARM::AEK_DSP | ARM::AEK_CRC))
 ARM_ARCH("armv8-m.base", AK_ARMV8MBaseline, "8-M.Baseline", "v8m.base",
-          ARMBuildAttrs::CPUArch::v8_M_Base, FK_NONE, ARM::AEK_HWDIV)
+          ARMBuildAttrs::CPUArch::v8_M_Base, FK_NONE, ARM::AEK_SEC | ARM::AEK_HWDIV)
 ARM_ARCH("armv8-m.main", AK_ARMV8MMainline, "8-M.Mainline", "v8m.main",
-          ARMBuildAttrs::CPUArch::v8_M_Main, FK_FPV5_D16, ARM::AEK_HWDIV)
+          ARMBuildAttrs::CPUArch::v8_M_Main, FK_FPV5_D16, ARM::AEK_SEC | ARM::AEK_HWDIV)
 // Non-standard Arch names.
 ARM_ARCH("iwmmxt", AK_IWMMXT, "iwmmxt", "", ARMBuildAttrs::CPUArch::v5TE,
           FK_NONE, ARM::AEK_NONE)