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AArch64: Add backend intrinsic for rbit.

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

rdar://9283021

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@211058 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jim Grosbach 2014-06-16 21:55:35 +00:00
parent 5c1a1b2249
commit 44d2cdcbf3
2 changed files with 11 additions and 0 deletions
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7
include/llvm/IR/IntrinsicsAArch64.td
View File

@ -31,6 +31,13 @@ def int_aarch64_sdiv : Intrinsic<[llvm_anyint_ty], [LLVMMatchType<0>,
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]>;
}
//===----------------------------------------------------------------------===//

4
lib/Target/AArch64/AArch64InstrInfo.td
View File

@ -737,6 +737,10 @@ def : Pat<(not GPR64:$Xm), (ORNXrr XZR, GPR64:$Xm)>;
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>;