diff --git a/llvm/lib/Target/X86/X86InstrSNP.td b/llvm/lib/Target/X86/X86InstrSNP.td
--- a/llvm/lib/Target/X86/X86InstrSNP.td
+++ b/llvm/lib/Target/X86/X86InstrSNP.td
@@ -38,6 +38,11 @@
 let Uses = [RAX] in
 def RMPADJUST: I<0x01, MRM_FE, (outs), (ins), "rmpadjust", []>, XS,
                Requires<[In64BitMode]>;
+
+// F3 0F 01 FD
+let Uses = [RAX, RDX], Defs = [RCX, RDX] in
+def RMPQUERY: I<0x01, MRM_FD, (outs), (ins), "rmpquery", []>, XS,
+               Requires<[In64BitMode]>;
 } // SchedRW
 
 def : InstAlias<"psmash\t{%rax|rax}", (PSMASH)>, Requires<[In64BitMode]>;
@@ -45,3 +50,4 @@
 def : InstAlias<"pvalidate\t{%eax|eax}", (PVALIDATE32)>, Requires<[Not64BitMode]>;
 def : InstAlias<"rmpupdate\t{%rax|rax}", (RMPUPDATE)>, Requires<[In64BitMode]>;
 def : InstAlias<"rmpadjust\t{%rax|rax}", (RMPADJUST)>, Requires<[In64BitMode]>;
+def : InstAlias<"rmpquery\t{%rax, %rcx, %rdx|rdx, rcx, rax}", (RMPQUERY)>, Requires<[In64BitMode]>;
diff --git a/llvm/test/MC/Disassembler/X86/x86-64.txt b/llvm/test/MC/Disassembler/X86/x86-64.txt
--- a/llvm/test/MC/Disassembler/X86/x86-64.txt
+++ b/llvm/test/MC/Disassembler/X86/x86-64.txt
@@ -744,6 +744,9 @@
 # CHECK: rmpadjust
 0xf3 0x0f 0x01 0xfe
 
+# CHECK: rmpquery
+0xf3 0x0f 0x01 0xfd
+
 # CHECK: testui
 0xf3,0x0f,0x01,0xed
 
diff --git a/llvm/test/MC/X86/SNP-64.s b/llvm/test/MC/X86/SNP-64.s
--- a/llvm/test/MC/X86/SNP-64.s
+++ b/llvm/test/MC/X86/SNP-64.s
@@ -16,6 +16,10 @@
 // CHECK: encoding: [0xf3,0x0f,0x01,0xfe]
 rmpadjust
 
+// CHECK: rmpquery
+// CHECK: encoding: [0xf3,0x0f,0x01,0xfd]
+rmpquery
+
 // CHECK: rmpupdate
 // CHECK: encoding: [0xf2,0x0f,0x01,0xfe]
 rmpupdate %rax
@@ -31,3 +35,7 @@
 // CHECK: rmpadjust
 // CHECK: encoding: [0xf3,0x0f,0x01,0xfe]
 rmpadjust %rax
+
+// CHECK: rmpquery
+// CHECK: encoding: [0xf3,0x0f,0x01,0xfd]
+rmpquery %rax, %rcx, %rdx