diff --git a/llvm/lib/Target/PowerPC/PPCInstrPrefix.td b/llvm/lib/Target/PowerPC/PPCInstrPrefix.td
--- a/llvm/lib/Target/PowerPC/PPCInstrPrefix.td
+++ b/llvm/lib/Target/PowerPC/PPCInstrPrefix.td
@@ -481,6 +481,13 @@
   let Inst{31}    = 0;
 }
 
+// X-Form: [ PO RT BI /// XO / ]
+class XForm_XT5_BI5<bits<6> opcode, bits<10> xo, dag OOL, dag IOL,
+                    string asmstr, InstrItinClass itin, list<dag> pattern>
+  : XForm_base_r3xo<opcode, xo, OOL, IOL, asmstr, itin, pattern> {
+  let B = 0;
+}
+
 multiclass MLS_DForm_R_SI34_RTA5_MEM_p<bits<6> opcode, dag OOL, dag IOL,
                                        dag PCRel_IOL, string asmstr,
                                        InstrItinClass itin> {
@@ -877,6 +884,26 @@
 }
 
 let Predicates = [IsISA3_1] in {
+  def SETBC : XForm_XT5_BI5<31, 384, (outs gprc:$RT), (ins crbitrc:$BI),
+                            "setbc $RT, $BI", IIC_IntCompare, []>;
+  def SETBCR : XForm_XT5_BI5<31, 416, (outs gprc:$RT), (ins crbitrc:$BI),
+                             "setbcr $RT, $BI", IIC_IntCompare, []>;
+  def SETNBC : XForm_XT5_BI5<31, 448, (outs gprc:$RT), (ins crbitrc:$BI),
+                             "setnbc $RT, $BI", IIC_IntCompare, []>;
+  def SETNBCR : XForm_XT5_BI5<31, 480, (outs gprc:$RT), (ins crbitrc:$BI),
+                              "setnbcr $RT, $BI", IIC_IntCompare, []>;
+
+  let Interpretation64Bit = 1, isCodeGenOnly = 1 in {
+    def SETBC8 : XForm_XT5_BI5<31, 384, (outs g8rc:$RT), (ins crbitrc:$BI),
+                               "setbc $RT, $BI", IIC_IntCompare, []>;
+    def SETBCR8 : XForm_XT5_BI5<31, 416, (outs g8rc:$RT), (ins crbitrc:$BI),
+                                "setbcr $RT, $BI", IIC_IntCompare, []>;
+    def SETNBC8 : XForm_XT5_BI5<31, 448, (outs g8rc:$RT), (ins crbitrc:$BI),
+                                "setnbc $RT, $BI", IIC_IntCompare, []>;
+    def SETNBCR8 : XForm_XT5_BI5<31, 480, (outs g8rc:$RT), (ins crbitrc:$BI),
+                                 "setnbcr $RT, $BI", IIC_IntCompare, []>;
+  }
+
   def VSLDBI : VNForm_VTAB5_SD3<22, 0, (outs vrrc:$VRT),
                                 (ins vrrc:$VRA, vrrc:$VRB, u3imm:$SH),
                                 "vsldbi $VRT, $VRA, $VRB, $SH",
diff --git a/llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-ISA31.txt b/llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-ISA31.txt
--- a/llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-ISA31.txt
+++ b/llvm/test/MC/Disassembler/PowerPC/ppc64-encoding-ISA31.txt
@@ -225,6 +225,18 @@
 # CHECK: xxblendvd 6, 63, 21, 34
 0x05 0x00 0x00 0x00 0x84 0xdf 0xa8 0xbc
 
+# CHECK: setbc 21, 11
+0x7e 0xab 0x03 0x00
+
+# CHECK: setbcr 21, 11
+0x7e 0xab 0x03 0x40
+
+# CHECK: setnbc 21, 11
+0x7e 0xab 0x03 0x80
+
+# CHECK: setnbcr 21, 11
+0x7e 0xab 0x03 0xc0
+
 # CHECK: vsldbi 2, 3, 4, 5
 0x10 0x43 0x21 0x56
 
diff --git a/llvm/test/MC/PowerPC/ppc64-encoding-ISA31.s b/llvm/test/MC/PowerPC/ppc64-encoding-ISA31.s
--- a/llvm/test/MC/PowerPC/ppc64-encoding-ISA31.s
+++ b/llvm/test/MC/PowerPC/ppc64-encoding-ISA31.s
@@ -351,6 +351,18 @@
 # CHECK-LE: xxblendvd 6, 63, 21, 34               # encoding: [0x00,0x00,0x00,0x05,
 # CHECK-LE-SAME:                                               0xbc,0xa8,0xdf,0x84]
             xxblendvd 6, 63, 21, 34
+# CHECK-BE: setbc 21, 11                          # encoding: [0x7e,0xab,0x03,0x00]
+# CHECK-LE: setbc 21, 11                          # encoding: [0x00,0x03,0xab,0x7e]
+            setbc 21, 11
+# CHECK-BE: setbcr 21, 11                         # encoding: [0x7e,0xab,0x03,0x40]
+# CHECK-LE: setbcr 21, 11                         # encoding: [0x40,0x03,0xab,0x7e]
+            setbcr 21, 11
+# CHECK-BE: setnbc 21, 11                         # encoding: [0x7e,0xab,0x03,0x80]
+# CHECK-LE: setnbc 21, 11                         # encoding: [0x80,0x03,0xab,0x7e]
+            setnbc 21, 11
+# CHECK-BE: setnbcr 21, 11                        # encoding: [0x7e,0xab,0x03,0xc0]
+# CHECK-LE: setnbcr 21, 11                        # encoding: [0xc0,0x03,0xab,0x7e]
+            setnbcr 21, 11
 # CHECK-BE: vsldbi 2, 3, 4, 5                     # encoding: [0x10,0x43,0x21,0x56]
 # CHECK-LE: vsldbi 2, 3, 4, 5                     # encoding: [0x56,0x21,0x43,0x10]
             vsldbi 2, 3, 4, 5