diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -3247,6 +3247,8 @@
 def mno_mma: Flag<["-"], "mno-mma">, Group<m_ppc_Features_Group>;
 def mrop_protect : Flag<["-"], "mrop-protect">,
     Group<m_ppc_Features_Group>;
+def mprivileged : Flag<["-"], "mprivileged">,
+    Group<m_ppc_Features_Group>;
 def maix_struct_return : Flag<["-"], "maix-struct-return">,
   Group<m_Group>, Flags<[CC1Option]>,
   HelpText<"Return all structs in memory (PPC32 only)">;
diff --git a/clang/lib/Basic/Targets/PPC.h b/clang/lib/Basic/Targets/PPC.h
--- a/clang/lib/Basic/Targets/PPC.h
+++ b/clang/lib/Basic/Targets/PPC.h
@@ -60,6 +60,7 @@
   bool HasAltivec = false;
   bool HasMMA = false;
   bool HasROPProtect = false;
+  bool HasPrivileged = false;
   bool HasVSX = false;
   bool HasP8Vector = false;
   bool HasP8Crypto = false;
diff --git a/clang/lib/Basic/Targets/PPC.cpp b/clang/lib/Basic/Targets/PPC.cpp
--- a/clang/lib/Basic/Targets/PPC.cpp
+++ b/clang/lib/Basic/Targets/PPC.cpp
@@ -68,6 +68,8 @@
       HasMMA = true;
     } else if (Feature == "+rop-protect") {
       HasROPProtect = true;
+    } else if (Feature == "+privileged") {
+      HasPrivileged = true;
     }
     // TODO: Finish this list and add an assert that we've handled them
     // all.
@@ -197,6 +199,8 @@
     Builder.defineMacro("__MMA__");
   if (HasROPProtect)
     Builder.defineMacro("__ROP_PROTECT__");
+  if (HasPrivileged)
+    Builder.defineMacro("__PRIVILEGED__");
   if (HasP10Vector)
     Builder.defineMacro("__POWER10_VECTOR__");
   if (HasPCRelativeMemops)
@@ -327,6 +331,8 @@
 
   // ROP Protect is off by default.
   Features["rop-protect"] = false;
+  // Privileged instructions are off by default.
+  Features["privileged"] = false;
 
   Features["spe"] = llvm::StringSwitch<bool>(CPU)
                         .Case("8548", true)
@@ -371,6 +377,12 @@
     return false;
   }
 
+  if (!(ArchDefs & ArchDefinePwr8) &&
+      llvm::find(FeaturesVec, "+privileged") != FeaturesVec.end()) {
+    Diags.Report(diag::err_opt_not_valid_with_opt) << "-mprivileged" << CPU;
+    return false;
+  }
+
   return TargetInfo::initFeatureMap(Features, Diags, CPU, FeaturesVec);
 }
 
@@ -410,6 +422,7 @@
       .Case("spe", HasSPE)
       .Case("mma", HasMMA)
       .Case("rop-protect", HasROPProtect)
+      .Case("privileged", HasPrivileged)
       .Default(false);
 }
 
diff --git a/clang/test/Driver/ppc-mprivileged-support-check.c b/clang/test/Driver/ppc-mprivileged-support-check.c
new file mode 100644
--- /dev/null
+++ b/clang/test/Driver/ppc-mprivileged-support-check.c
@@ -0,0 +1,26 @@
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
+// RUN:   -mcpu=pwr10 -mprivileged %s 2>&1 | FileCheck %s --check-prefix=HASPRIV
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
+// RUN:   -mcpu=power10 -mprivileged %s 2>&1 | FileCheck %s --check-prefix=HASPRIV
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
+// RUN:   -mcpu=pwr9 -mprivileged %s 2>&1 | FileCheck %s --check-prefix=HASPRIV
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
+// RUN:   -mcpu=power9 -mprivileged %s 2>&1 | FileCheck %s --check-prefix=HASPRIV
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
+// RUN:   -mcpu=pwr8 -mprivileged %s 2>&1 | FileCheck %s --check-prefix=HASPRIV
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
+// RUN:   -mcpu=power8 -mprivileged %s 2>&1 | FileCheck %s --check-prefix=HASPRIV
+
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
+// RUN:   -mcpu=pwr7 -mprivileged %s 2>&1 | FileCheck %s --check-prefix=NOPRIV
+// RUN: not %clang -target powerpc64le-unknown-linux-gnu -fsyntax-only \
+// RUN:   -mcpu=power7 -mprivileged %s 2>&1 | FileCheck %s --check-prefix=NOPRIV
+
+#ifdef __PRIVILEGED__
+static_assert(false, "Privileged instructions enabled");
+#endif
+
+// HASPRIV: Privileged instructions enabled
+// HASPRIV-NOT: option '-mprivileged' cannot be specified with
+// NOPRIV: option '-mprivileged' cannot be specified with
+
diff --git a/clang/test/Preprocessor/init-ppc64.c b/clang/test/Preprocessor/init-ppc64.c
--- a/clang/test/Preprocessor/init-ppc64.c
+++ b/clang/test/Preprocessor/init-ppc64.c
@@ -567,6 +567,7 @@
 // PPCPWR8:#define _ARCH_PWR7 1
 // PPCPWR8:#define _ARCH_PWR8 1
 // PPCPWR8-NOT:#define __ROP_PROTECT__ 1
+// PPCPWR8-NOT:#define __PRIVILEGED__ 1
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-cpu power8 -fno-signed-char < /dev/null | FileCheck -match-full-lines -check-prefix PPCPOWER8 %s
 //
@@ -585,6 +586,7 @@
 // PPCPOWER8:#define _ARCH_PWR7 1
 // PPCPOWER8:#define _ARCH_PWR8 1
 // PPCPOWER8-NOT:#define __ROP_PROTECT__ 1
+// PPCPOWER8-NOT:#define __PRIVILEGED__ 1
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-cpu pwr9 -fno-signed-char < /dev/null | FileCheck -match-full-lines -check-prefix PPCPWR9 %s
 //
@@ -600,6 +602,7 @@
 // PPCPWR9:#define _ARCH_PWR7 1
 // PPCPWR9:#define _ARCH_PWR9 1
 // PPCPWR9-NOT:#define __ROP_PROTECT__ 1
+// PPCPWR9-NOT:#define __PRIVILEGED__ 1
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-cpu power9 -fno-signed-char < /dev/null | FileCheck -match-full-lines -check-prefix PPCPOWER9 %s
 //
@@ -615,6 +618,7 @@
 // PPCPOWER9:#define _ARCH_PWR7 1
 // PPCPOWER9:#define _ARCH_PWR9 1
 // PPCPOWER9-NOT:#define __ROP_PROTECT__ 1
+// PPCPOWER9-NOT:#define __PRIVILEGED__ 1
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-cpu pwr10 -fno-signed-char < /dev/null | FileCheck -match-full-lines -check-prefix PPCPOWER10 %s
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-cpu power10 -fno-signed-char < /dev/null | FileCheck -match-full-lines -check-prefix PPCPOWER10 %s
@@ -635,6 +639,7 @@
 // PPCPOWER10:#define __MMA__ 1
 // PPCPOWER10:#define __PCREL__ 1
 // PPCPOWER10-NOT:#define __ROP_PROTECT__ 1
+// PPCPOWER10-NOT:#define __PRIVILEGED__ 1
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-cpu future -fno-signed-char < /dev/null | FileCheck -match-full-lines -check-prefix PPCFUTURE %s
 //
@@ -655,6 +660,7 @@
 // PPCFUTURE:#define __MMA__ 1
 // PPCFUTURE:#define __PCREL__ 1
 // PPCFUTURE-NOT:#define __ROP_PROTECT__ 1
+// PPCFUTURE-NOT:#define __PRIVILEGED__ 1
 //
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-feature +mma -target-cpu power10 -fno-signed-char < /dev/null | FileCheck -check-prefix PPC-MMA %s
 // PPC-MMA:#define __MMA__ 1
@@ -664,6 +670,11 @@
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-feature +rop-protect -target-cpu power8 -fno-signed-char < /dev/null | FileCheck -check-prefix PPC-ROP %s
 // PPC-ROP:#define __ROP_PROTECT__ 1
 //
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-feature +privileged -target-cpu power10 -fno-signed-char < /dev/null | FileCheck -check-prefix PPC-PRIV %s
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-feature +privileged -target-cpu power9 -fno-signed-char < /dev/null | FileCheck -check-prefix PPC-PRIV %s
+// RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-feature +privileged -target-cpu power8 -fno-signed-char < /dev/null | FileCheck -check-prefix PPC-PRIV %s
+// PPC-PRIV:#define __PRIVILEGED__ 1
+//
 // RUN: %clang_cc1 -E -dM -ffreestanding -triple=powerpc64-none-none -target-feature +float128 -target-cpu power9 -fno-signed-char < /dev/null | FileCheck -check-prefix PPC-FLOAT128 %s
 // PPC-FLOAT128:#define __FLOAT128__ 1
 //
diff --git a/llvm/lib/Target/PowerPC/PPC.td b/llvm/lib/Target/PowerPC/PPC.td
--- a/llvm/lib/Target/PowerPC/PPC.td
+++ b/llvm/lib/Target/PowerPC/PPC.td
@@ -256,6 +256,10 @@
   SubtargetFeature<"rop-protect", "HasROPProtect", "true",
                    "Add ROP protect">;
 
+def FeaturePrivileged :
+  SubtargetFeature<"privileged", "HasPrivileged", "true",
+                   "Add privileged instructions">;
+
 def FeaturePredictableSelectIsExpensive :
   SubtargetFeature<"predictable-select-expensive",
                    "PredictableSelectIsExpensive",
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.h b/llvm/lib/Target/PowerPC/PPCSubtarget.h
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.h
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.h
@@ -113,6 +113,7 @@
   bool HasPCRelativeMemops;
   bool HasMMA;
   bool HasROPProtect;
+  bool HasPrivileged;
   bool HasFCPSGN;
   bool HasFSQRT;
   bool HasFRE, HasFRES, HasFRSQRTE, HasFRSQRTES;
@@ -275,6 +276,7 @@
   bool hasPCRelativeMemops() const { return HasPCRelativeMemops; }
   bool hasMMA() const { return HasMMA; }
   bool hasROPProtect() const { return HasROPProtect; }
+  bool hasPrivileged() const { return HasPrivileged; }
   bool pairedVectorMemops() const { return PairedVectorMemops; }
   bool hasMFOCRF() const { return HasMFOCRF; }
   bool hasISEL() const { return HasISEL; }
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
--- a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
+++ b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp
@@ -88,6 +88,7 @@
   HasP9Altivec = false;
   HasMMA = false;
   HasROPProtect = false;
+  HasPrivileged = false;
   HasP10Vector = false;
   HasPrefixInstrs = false;
   HasPCRelativeMemops = false;
diff --git a/llvm/test/CodeGen/PowerPC/future-check-features.ll b/llvm/test/CodeGen/PowerPC/future-check-features.ll
--- a/llvm/test/CodeGen/PowerPC/future-check-features.ll
+++ b/llvm/test/CodeGen/PowerPC/future-check-features.ll
@@ -1,7 +1,7 @@
-; RUN: llc -mattr=pcrelative-memops,prefix-instrs,paired-vector-memops,mma,rop-protect \
+; RUN: llc -mattr=pcrelative-memops,prefix-instrs,paired-vector-memops,mma,rop-protect,privileged \
 ; RUN:   -verify-machineinstrs -mtriple=powerpc64le-unknown-unknown \
 ; RUN:   -ppc-asm-full-reg-names %s -o - 2>&1 | FileCheck %s
-; RUN: llc -mattr=pcrelative-memops,prefix-instrs,paired-vector-memops,mma,rop-protect \
+; RUN: llc -mattr=pcrelative-memops,prefix-instrs,paired-vector-memops,mma,rop-protect,privileged \
 ; RUN:   -verify-machineinstrs -mtriple=powerpc64-unknown-unknown \
 ; RUN:   -ppc-asm-full-reg-names %s -o - 2>&1 | FileCheck %s