diff --git a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
--- a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -347,6 +347,7 @@
     bool tryAsSingleRLWINM(SDNode *N);
     bool tryAsSingleRLWINM8(SDNode *N);
     bool tryAsSingleRLWIMI(SDNode *N);
+    bool tryAsPairOfRLDICL(SDNode *N);
 
     void PeepholePPC64();
     void PeepholePPC64ZExt();
@@ -4438,6 +4439,51 @@
   return false;
 }
 
+bool PPCDAGToDAGISel::tryAsPairOfRLDICL(SDNode *N) {
+  assert(N->getOpcode() == ISD::AND && "ISD::AND SDNode expected");
+  uint64_t Imm64;
+  if (!isInt64Immediate(N->getOperand(1).getNode(), Imm64))
+    return false;
+
+  // Do nothing if it is 16-bit imm as the pattern in the .td file handle
+  // it well with "andi.".
+  if (isUInt<16>(Imm64))
+    return false;
+
+  SDLoc Loc(N);
+  SDValue Val = N->getOperand(0);
+  // Right rotate M bits, and clear left N bits
+  auto RotateRightClearLeft = [&](SDValue Val, int M, int N) {
+    return SDValue(CurDAG->getMachineNode(PPC::RLDICL, Loc, MVT::i64, Val,
+                                          getI64Imm((64 - M) & 63, Loc),
+                                          getI64Imm(N, Loc)),
+                   0);
+  };
+
+  // change pattern |0001111100000011111111|
+  //             to |1111111100000011111111| and then clear it later.
+  unsigned ClearBits = countLeadingZeros(Imm64);
+  if (ClearBits != 0)
+    Imm64 |= maskLeadingOnes<uint64_t>(ClearBits);
+
+  unsigned MB, ME;
+  if (!isRunOfOnes64(Imm64, MB, ME))
+    return false;
+
+  // Optimize it with two rldicl instructions.
+  //        MB          ME               MB+63-ME
+  // +----------------------+     +----------------------+
+  // |0000001111111111111000| ->  |0000000001111111111111|
+  // +----------------------+     +----------------------+
+  //  0                    63      0                    63
+  // Right rotate 63-ME bits first and clear left MB+63-ME bits
+  Val = RotateRightClearLeft(Val, 63 - ME, (MB + 63 - ME) & 63);
+  // Left rotate 63-ME bits and clear left ClearBits.
+  SDValue Ops[] = {Val, getI64Imm(63 - ME, Loc), getI64Imm(ClearBits, Loc)};
+  CurDAG->SelectNodeTo(N, PPC::RLDICL, MVT::i64, Ops);
+  return true;
+}
+
 bool PPCDAGToDAGISel::tryAsSingleRLWIMI(SDNode *N) {
   assert(N->getOpcode() == ISD::AND && "ISD::AND SDNode expected");
   unsigned Imm;
@@ -4765,7 +4811,7 @@
   case ISD::AND:
     // If this is an 'and' with a mask, try to emit rlwinm/rldicl/rldicr
     if (tryAsSingleRLWINM(N) || tryAsSingleRLWIMI(N) || tryAsSingleRLDICL(N) ||
-        tryAsSingleRLDICR(N) || tryAsSingleRLWINM8(N))
+        tryAsSingleRLDICR(N) || tryAsSingleRLWINM8(N) || tryAsPairOfRLDICL(N))
       return;
 
     // Other cases are autogenerated.
diff --git a/llvm/test/CodeGen/PowerPC/2016-04-17-combine.ll b/llvm/test/CodeGen/PowerPC/2016-04-17-combine.ll
--- a/llvm/test/CodeGen/PowerPC/2016-04-17-combine.ll
+++ b/llvm/test/CodeGen/PowerPC/2016-04-17-combine.ll
@@ -7,8 +7,8 @@
 %typ = type { i32, i32 }
 
 ; On release builds, it doesn't crash, spewing nonsense instead.
-; To make sure it works, check that and is still alive.
-; CHECK: and
+; To make sure it works, check that rldicl is still alive.
+; CHECK: rldicl
 ; Also, in release, it emits a COPY from a 32-bit register to
 ; a 64-bit register, which happens to be emitted as cror [!]
 ; by the confused CodeGen.  Just to be sure, check there isn't one.
diff --git a/llvm/test/CodeGen/PowerPC/Frames-dyn-alloca.ll b/llvm/test/CodeGen/PowerPC/Frames-dyn-alloca.ll
--- a/llvm/test/CodeGen/PowerPC/Frames-dyn-alloca.ll
+++ b/llvm/test/CodeGen/PowerPC/Frames-dyn-alloca.ll
@@ -43,15 +43,13 @@
 ; PPC64-LINUX-LABEL: f1
 ; PPC64-LINUX:      std 31, -8(1)
 ; PPC64-LINUX-NEXT: stdu 1, -64(1)
-; PPC64-LINUX-NEXT: lis 4, 32767
 ; PPC64-LINUX-NEXT: rldic 3, 3, 2, 30
-; PPC64-LINUX-NEXT: ori 4, 4, 65535
-; PPC64-LINUX-NEXT: addi 3, 3, 15
-; PPC64-LINUX-NEXT: sldi 4, 4, 4
 ; PPC64-LINUX-NEXT: mr 31, 1
-; PPC64-LINUX-NEXT: and 3, 3, 4
-; PPC64-LINUX-NEXT: neg 3, 3
+; PPC64-LINUX-NEXT: addi 3, 3, 15
+; PPC64-LINUX-NEXT: rldicl 3, 3, 60, 4
 ; PPC64-LINUX-NEXT: addi 4, 31, 64
+; PPC64-LINUX-NEXT: rldicl 3, 3, 4, 29
+; PPC64-LINUX-NEXT: neg 3, 3
 ; PPC64-LINUX-NEXT: stdux 4, 1, 3
 
 ; The linkage area is always put on the top of the stack.
@@ -82,14 +80,12 @@
 ; PPC64-AIX-LABEL: f1
 ; PPC64-AIX:      std 31, -8(1)
 ; PPC64-AIX-NEXT: stdu 1, -64(1)
-; PPC64-AIX-NEXT: lis 4, 32767
 ; PPC64-AIX-NEXT: rldic 3, 3, 2, 30
-; PPC64-AIX-NEXT: ori 4, 4, 65535
-; PPC64-AIX-NEXT: addi 3, 3, 15
-; PPC64-AIX-NEXT: sldi 4, 4, 4
 ; PPC64-AIX-NEXT: mr 31, 1
-; PPC64-AIX-NEXT: and 3, 3, 4
+; PPC64-AIX-NEXT: addi 3, 3, 15
 ; PPC64-AIX-NEXT: addi 4, 31, 64
+; PPC64-AIX-NEXT: rldicl 3, 3, 60, 4 
+; PPC64-AIX-NEXT: rldicl 3, 3, 4, 29
 ; PPC64-AIX-NEXT: neg 3, 3
 ; PPC64-AIX-NEXT: stdux 4, 1, 3
 
diff --git a/llvm/test/CodeGen/PowerPC/and-mask.ll b/llvm/test/CodeGen/PowerPC/and-mask.ll
--- a/llvm/test/CodeGen/PowerPC/and-mask.ll
+++ b/llvm/test/CodeGen/PowerPC/and-mask.ll
@@ -15,8 +15,8 @@
 define i64 @test2(i64 %a) {
 ; CHECK-LABEL: test2:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    li 4, -7
-; CHECK-NEXT:    and 3, 3, 4
+; CHECK-NEXT:    rldicl 3, 3, 61, 2
+; CHECK-NEXT:    rotldi 3, 3, 3
 ; CHECK-NEXT:    blr
   %and = and i64 %a, -7
   ret i64 %and
@@ -26,10 +26,8 @@
 define i64 @test3(i64 %a) {
 ; CHECK-LABEL: test3:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    lis 4, 1023
-; CHECK-NEXT:    ori 4, 4, 65535
-; CHECK-NEXT:    sldi 4, 4, 22
-; CHECK-NEXT:    and 3, 3, 4
+; CHECK-NEXT:    rldicl 3, 3, 42, 22
+; CHECK-NEXT:    rldicl 3, 3, 22, 16
 ; CHECK-NEXT:    blr
   %and = and i64 %a, 281474972516352
   ret i64 %and
@@ -39,10 +37,8 @@
 define i64 @test4(i64 %a) {
 ; CHECK-LABEL: test4:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    li 4, 12
-; CHECK-NEXT:    sldi 4, 4, 32
-; CHECK-NEXT:    ori 4, 4, 255
-; CHECK-NEXT:    and 3, 3, 4
+; CHECK-NEXT:    rldicl 3, 3, 30, 26
+; CHECK-NEXT:    rldicl 3, 3, 34, 28
 ; CHECK-NEXT:    blr
   %and = and i64 %a, 51539607807
   ret i64 %and
@@ -52,10 +48,8 @@
 define i64 @test5(i64 %a) {
 ; CHECK-LABEL: test5:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    li 4, 0
-; CHECK-NEXT:    oris 4, 4, 65472
-; CHECK-NEXT:    ori 4, 4, 65535
-; CHECK-NEXT:    and 3, 3, 4
+; CHECK-NEXT:    rldicl 3, 3, 42, 6
+; CHECK-NEXT:    rldicl 3, 3, 22, 32
 ; CHECK-NEXT:    blr
   %and = and i64 %a, 4290838527
   ret i64 %and
@@ -77,11 +71,8 @@
 define i64 @test7(i64 %a) {
 ; CHECK-LABEL: test7:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    li 4, -32767
-; CHECK-NEXT:    sldi 4, 4, 32
-; CHECK-NEXT:    oris 4, 4, 65024
-; CHECK-NEXT:    rldicr 4, 4, 17, 63
-; CHECK-NEXT:    and 3, 3, 4
+; CHECK-NEXT:    rldicl 3, 3, 22, 25
+; CHECK-NEXT:    rldicl 3, 3, 42, 14
 ; CHECK-NEXT:    blr
   %and = and i64 %a, 1121501860462591
   ret i64 %and
diff --git a/llvm/test/CodeGen/PowerPC/cmpb.ll b/llvm/test/CodeGen/PowerPC/cmpb.ll
--- a/llvm/test/CodeGen/PowerPC/cmpb.ll
+++ b/llvm/test/CodeGen/PowerPC/cmpb.ll
@@ -123,11 +123,9 @@
   ret i32 %or55
 
 ; CHECK-LABEL: @test32p1
-; CHECK: li [[REG1:[0-9]+]], 0
-; CHECK: cmpb [[REG4:[0-9]+]], 4, 3
-; CHECK: oris [[REG2:[0-9]+]], [[REG1]], 65287
-; CHECK: ori [[REG3:[0-9]+]], [[REG2]], 65535
-; CHECK: and 3, [[REG4]], [[REG3]]
+; CHECK: cmpb [[REG1:[0-9]+]], 4, 3
+; CHECK: rldicl [[REG2:[0-9]+]], [[REG1]], 40, 5 
+; CHECK: rldicl 3, [[REG2]], 24, 32  
 ; CHECK: blr
 }
 
@@ -147,11 +145,9 @@
   ret i32 %or37
 
 ; CHECK-LABEL: @test32p2
-; CHECK: li [[REG1:[0-9]+]], 0
-; CHECK: cmpb [[REG4:[0-9]+]], 4, 3
-; CHECK: oris [[REG2:[0-9]+]], [[REG1]], 65280
-; CHECK: ori [[REG3:[0-9]+]], [[REG2]], 65535
-; CHECK: and 3, [[REG4]], [[REG3]]
+; CHECK: cmpb [[REG1:[0-9]+]], 4, 3
+; CHECK: rldicl [[REG2:[0-9]+]], [[REG1]], 40, 8 
+; CHECK: rldicl 3, [[REG2]], 24, 32 
 ; CHECK: blr
 }
 
diff --git a/llvm/test/CodeGen/PowerPC/setcc-logic.ll b/llvm/test/CodeGen/PowerPC/setcc-logic.ll
--- a/llvm/test/CodeGen/PowerPC/setcc-logic.ll
+++ b/llvm/test/CodeGen/PowerPC/setcc-logic.ll
@@ -481,9 +481,9 @@
 define i1 @or_icmps_const_1bit_diff(i64 %x) {
 ; CHECK-LABEL: or_icmps_const_1bit_diff:
 ; CHECK:       # %bb.0:
-; CHECK-NEXT:    li 4, -5
 ; CHECK-NEXT:    addi 3, 3, -13
-; CHECK-NEXT:    and 3, 3, 4
+; CHECK-NEXT:    rldicl 3, 3, 61, 1
+; CHECK-NEXT:    rotldi 3, 3, 3
 ; CHECK-NEXT:    cntlzd 3, 3
 ; CHECK-NEXT:    rldicl 3, 3, 58, 63
 ; CHECK-NEXT:    blr