[llvm] r211058 - AArch64: Add backend intrinsic for rbit.

[Jim Grosbach]

Author: grosbach
Date: Mon Jun 16 16:55:35 2014
New Revision: 211058

URL: http://llvm.org/viewvc/llvm-project?rev=211058&view=rev
Log:
AArch64: Add backend intrinsic for rbit.

Define an intrinsic for the frontend to use and pattern match it to
the RBIT instruction.

rdar://9283021

Modified:
    llvm/trunk/include/llvm/IR/IntrinsicsAArch64.td
    llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td

Modified: llvm/trunk/include/llvm/IR/IntrinsicsAArch64.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/IR/IntrinsicsAArch64.td?rev=211058&r1=211057&r2=211058&view=diff
==============================================================================
--- llvm/trunk/include/llvm/IR/IntrinsicsAArch64.td (original)
+++ llvm/trunk/include/llvm/IR/IntrinsicsAArch64.td Mon Jun 16 16:55:35 2014
@@ -31,6 +31,13 @@ def int_aarch64_sdiv : Intrinsic<[llvm_a
                                 LLVMMatchType<0>], [IntrNoMem]>;
 def int_aarch64_udiv : Intrinsic<[llvm_anyint_ty], [LLVMMatchType<0>,
                                 LLVMMatchType<0>], [IntrNoMem]>;
+
+//===----------------------------------------------------------------------===//
+// RBIT
+
+def int_aarch64_rbit : Intrinsic<[llvm_anyint_ty], [LLVMMatchType<0>],
+                                 [IntrNoMem]>;
+
 }
 
 //===----------------------------------------------------------------------===//

Modified: llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td?rev=211058&r1=211057&r2=211058&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64InstrInfo.td Mon Jun 16 16:55:35 2014
@@ -737,6 +737,10 @@ def : Pat<(not GPR64:$Xm), (ORNXrr XZR,
 defm CLS    : OneOperandData<0b101, "cls">;
 defm CLZ    : OneOperandData<0b100, "clz", ctlz>;
 defm RBIT   : OneOperandData<0b000, "rbit">;
+
+def : Pat<(int_aarch64_rbit GPR32:$Rn), (RBITWr $Rn)>;
+def : Pat<(int_aarch64_rbit GPR64:$Rn), (RBITXr $Rn)>;
+
 def  REV16Wr : OneWRegData<0b001, "rev16",
                                   UnOpFrag<(rotr (bswap node:$LHS), (i64 16))>>;
 def  REV16Xr : OneXRegData<0b001, "rev16", null_frag>;