3 files changed, 10 insertions, 0 deletions
diff --git a/llvm/include/llvm/Support/TargetOpcodes.def b/llvm/include/llvm/Support/TargetOpcodes.def
index a619ce5e38e..3f7fbfbc176 100644
--- a/llvm/include/llvm/Support/TargetOpcodes.def
+++ b/llvm/include/llvm/Support/TargetOpcodes.def
@@ -560,6 +560,9 @@ HANDLE_TARGET_OPCODE(G_CTPOP)
 /// Generic byte swap.
 HANDLE_TARGET_OPCODE(G_BSWAP)
 
+/// Generic bit reverse.
+HANDLE_TARGET_OPCODE(G_BITREVERSE)
+
 /// Floating point ceil.
 HANDLE_TARGET_OPCODE(G_FCEIL)
 
diff --git a/llvm/include/llvm/Target/GenericOpcodes.td b/llvm/include/llvm/Target/GenericOpcodes.td
index e83508fe5b2..840646ef2b9 100644
--- a/llvm/include/llvm/Target/GenericOpcodes.td
+++ b/llvm/include/llvm/Target/GenericOpcodes.td
@@ -171,6 +171,12 @@ def G_BSWAP : GenericInstruction {
   let hasSideEffects = 0;
 }
 
+def G_BITREVERSE : GenericInstruction {
+  let OutOperandList = (outs type0:$dst);
+  let InOperandList = (ins type0:$src);
+  let hasSideEffects = 0;
+}
+
 def G_ADDRSPACE_CAST : GenericInstruction {
   let OutOperandList = (outs type0:$dst);
   let InOperandList = (ins type1:$src);
diff --git a/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td b/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
index e06de6068d6..789fc3f57a3 100644
--- a/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
+++ b/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
@@ -90,6 +90,7 @@ def : GINodeEquiv<G_INTRINSIC_W_SIDE_EFFECTS, intrinsic_void>;
 def : GINodeEquiv<G_INTRINSIC_W_SIDE_EFFECTS, intrinsic_w_chain>;
 def : GINodeEquiv<G_BR, br>;
 def : GINodeEquiv<G_BSWAP, bswap>;
+def : GINodeEquiv<G_BITREVERSE, bitreverse>;
 def : GINodeEquiv<G_CTLZ, ctlz>;
 def : GINodeEquiv<G_CTTZ, cttz>;
 def : GINodeEquiv<G_CTLZ_ZERO_UNDEF, ctlz_zero_undef>;