[llvm] r211057 - ARM: intrinsic support for rbit.

[Jim Grosbach]

Author: grosbach
Date: Mon Jun 16 16:55:30 2014
New Revision: 211057

URL: http://llvm.org/viewvc/llvm-project?rev=211057&view=rev
Log:
ARM: intrinsic support for rbit.

We already have an ARMISD node. Create an intrinsic to map to it so we can
add support for the frontend __rbit() intrinsic.

rdar://9283021

Modified:
    llvm/trunk/include/llvm/IR/IntrinsicsARM.td
    llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp

Modified: llvm/trunk/include/llvm/IR/IntrinsicsARM.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/IntrinsicsARM.td?rev=211057&r1=211056&r2=211057&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/IntrinsicsARM.td (original)
+++ llvm/trunk/include/llvm/IR/IntrinsicsARM.td Mon Jun 16 16:55:30 2014
@@ -126,6 +126,11 @@ def int_arm_crc32cw : Intrinsic<[llvm_i3
 def int_arm_hint : Intrinsic<[], [llvm_i32_ty]>;
 
 //===----------------------------------------------------------------------===//
+// RBIT
+
+def int_arm_rbit : Intrinsic<[llvm_i32_ty], [llvm_i32_ty], [IntrNoMem]>;
+
+//===----------------------------------------------------------------------===//
 // UND (reserved undefined sequence)
 
 def int_arm_undefined : Intrinsic<[], [llvm_i32_ty]>;

Modified: llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp?rev=211057&r1=211056&r2=211057&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMISelLowering.cpp Mon Jun 16 16:55:30 2014
@@ -2542,6 +2542,11 @@ ARMTargetLowering::LowerINTRINSIC_WO_CHA
   SDLoc dl(Op);
   switch (IntNo) {
   default: return SDValue();    // Don't custom lower most intrinsics.
+  case Intrinsic::arm_rbit: {
+    assert(Op.getOperand(0).getValueType() == MVT::i32 &&
+           "RBIT intrinsic must have i32 type!");
+    return DAG.getNode(ARMISD::RBIT, dl, MVT::i32, Op.getOperand(0));
+  }
   case Intrinsic::arm_thread_pointer: {
     EVT PtrVT = DAG.getTargetLoweringInfo().getPointerTy();
     return DAG.getNode(ARMISD::THREAD_POINTER, dl, PtrVT);