Index: lib/Target/PowerPC/PPCInstrInfo.td
===================================================================
--- lib/Target/PowerPC/PPCInstrInfo.td
+++ lib/Target/PowerPC/PPCInstrInfo.td
@@ -3933,6 +3933,63 @@
 def STDCIX : XForm_base_r3xo<31, 1013, (outs), (ins gprc:$RST, gprc:$A, gprc:$B),
                              "stdcix $RST, $A, $B", IIC_LdStLoad, []>;
 
+// External PID Load Store Instructions
+
+def LBEPX   : XForm_1<31, 95, (outs gprc:$rD), (ins memrr:$src),
+                      "lbepx $rD, $src", IIC_LdStLoad, []>,
+                      Requires<[IsE500]>;
+
+def LFDEPX  : XForm_25<31, 607, (outs f8rc:$frD), (ins memrr:$src),
+                      "lfdepx $frD, $src", IIC_LdStLFD, []>,
+                      Requires<[IsE500]>;
+
+def LHEPX   : XForm_1<31, 287, (outs gprc:$rD), (ins memrr:$src),
+                      "lhepx $rD, $src", IIC_LdStLoad, []>,
+                      Requires<[IsE500]>;
+
+def LWEPX   : XForm_1<31, 31, (outs gprc:$rD), (ins memrr:$src),
+                      "lwepx $rD, $src", IIC_LdStLoad, []>,
+                      Requires<[IsE500]>;
+
+def STBEPX  : XForm_8<31, 223, (outs), (ins gprc:$rS, memrr:$dst),
+                      "stbepx $rS, $dst", IIC_LdStStore, []>,
+                      Requires<[IsE500]>;
+
+def STFDEPX : XForm_28<31, 735, (outs), (ins f8rc:$frS, memrr:$dst),
+                      "stfdepx $frS, $dst", IIC_LdStSTFD, []>,
+                      Requires<[IsE500]>;
+
+def STHEPX  : XForm_8<31, 415, (outs), (ins gprc:$rS, memrr:$dst),
+                      "sthepx $rS, $dst", IIC_LdStStore, []>,
+                      Requires<[IsE500]>;
+
+def STWEPX  : XForm_8<31, 159, (outs), (ins gprc:$rS, memrr:$dst),
+                      "stwepx $rS, $dst", IIC_LdStStore, []>,
+                      Requires<[IsE500]>;
+
+def DCBFEP  : DCB_Form<127, 0, (outs), (ins memrr:$dst), "dcbfep $dst",
+                      IIC_LdStDCBF, []>, Requires<[IsE500]>;
+
+def DCBSTEP : DCB_Form<63, 0, (outs), (ins memrr:$dst), "dcbstep $dst",
+                      IIC_LdStDCBF, []>, Requires<[IsE500]>;
+
+def DCBTEP  : DCB_Form_hint<319, (outs), (ins memrr:$dst, u5imm:$TH),
+                      "dcbtep $TH, $dst", IIC_LdStDCBF, []>,
+                      Requires<[IsE500]>;
+
+def DCBTSTEP : DCB_Form_hint<255, (outs), (ins memrr:$dst, u5imm:$TH),
+                      "dcbtstep $TH, $dst", IIC_LdStDCBF, []>,
+                      Requires<[IsE500]>;
+
+def DCBZEP  : DCB_Form<1023, 0, (outs), (ins memrr:$dst), "dcbzep $dst",
+                      IIC_LdStDCBF, []>, Requires<[IsE500]>;
+
+def DCBZLEP : DCB_Form<1023, 1, (outs), (ins memrr:$dst), "dcbzlep $dst",
+                      IIC_LdStDCBF, []>, Requires<[IsE500]>;
+
+def ICBIEP  : XForm_1a<31, 991, (outs), (ins memrr:$src), "icbiep $src",
+                      IIC_LdStICBI, []>, Requires<[IsE500]>;
+
 //===----------------------------------------------------------------------===//
 // PowerPC Assembler Instruction Aliases
 //
Index: test/MC/PowerPC/ppc32-extpid-e500.s
===================================================================
--- test/MC/PowerPC/ppc32-extpid-e500.s
+++ test/MC/PowerPC/ppc32-extpid-e500.s
@@ -0,0 +1,34 @@
+# RUN: llvm-mc -triple powerpc-unknown-unknown --show-encoding %s | FileCheck %s
+
+# Extended PID instructions specific to the e500 / e500mc cores:
+
+# CHECK: lbepx    1, 2, 3                  # encoding: [0x7c,0x22,0x18,0xbe]
+         lbepx    1, 2, 3
+# CHECK: lfdepx   4, 5, 6                  # encoding: [0x7c,0x85,0x34,0xbe]
+         lfdepx   4, 5, 6
+# CHECK: lhepx    7, 8, 9                  # encoding: [0x7c,0xe8,0x4a,0x3e]
+         lhepx    7, 8, 9
+# CHECK: lwepx    10, 11, 12               # encoding: [0x7d,0x4b,0x60,0x3e]
+         lwepx    10, 11, 12
+# CHECK: stbepx   13, 14, 15               # encoding: [0x7d,0xae,0x79,0xbe]
+         stbepx   13, 14, 15
+# CHECK: stfdepx  16, 17, 18               # encoding: [0x7e,0x11,0x95,0xbe]
+         stfdepx  16, 17, 18
+# CHECK: sthepx   19, 20, 21               # encoding: [0x7e,0x74,0xab,0x3e]
+         sthepx   19, 20, 21
+# CHECK: stwepx   22, 23, 24               # encoding: [0x7e,0xd7,0xc1,0x3e]
+         stwepx   22, 23, 24
+# CHECK: dcbfep   25, 26                   # encoding: [0x7c,0x19,0xd0,0xfe]
+         dcbfep   25, 26
+# CHECK: dcbstep  27, 28                   # encoding: [0x7c,0x1b,0xe0,0x7e]
+         dcbstep  27, 28
+# CHECK: dcbtep   29, 30, 31               # encoding: [0x7f,0xbe,0xfa,0x7e]
+         dcbtep   29, 30, 31
+# CHECK: dcbtstep 0, 1, 2                  # encoding: [0x7c,0x01,0x11,0xfe]
+         dcbtstep 0, 1, 2
+# CHECK: dcbzep   3, 4                     # encoding: [0x7c,0x03,0x27,0xfe]
+         dcbzep   3, 4
+# CHECK: dcbzlep  5, 6                     # encoding: [0x7c,0x25,0x37,0xfe]
+         dcbzlep  5, 6
+# CHECK: icbiep   7, 8                     # encoding: [0x7c,0x07,0x47,0xbe]
+         icbiep   7, 8