From 777abcb1d71daac6d4cce618cf33390f6647ec7c Mon Sep 17 00:00:00 2001
From: Colin LeMahieu <colinl@codeaurora.org>
Date: Wed, 7 Jan 2015 20:07:28 +0000
Subject: [Hexagon] Adding encoding for popcount, fastcorner, dword asr with
 rounding.

llvm-svn: 225371
---
 llvm/lib/Target/Hexagon/HexagonISelLowering.h |  3 +-
 llvm/lib/Target/Hexagon/HexagonInstrInfoV5.td | 60 +++++++++++++++++++++++++++
 2 files changed, 62 insertions(+), 1 deletion(-)

(limited to 'llvm/lib')

diff --git a/llvm/lib/Target/Hexagon/HexagonISelLowering.h b/llvm/lib/Target/Hexagon/HexagonISelLowering.h
index 88743df8f28..d03b1b8d9f4 100644
--- a/llvm/lib/Target/Hexagon/HexagonISelLowering.h
+++ b/llvm/lib/Target/Hexagon/HexagonISelLowering.h
@@ -52,7 +52,8 @@ bool isPositiveHalfWord(SDNode *N);
       CALL,        // A call instruction.
       RET_FLAG,    // Return with a flag operand.
       BR_JT,       // Jump table.
-      BARRIER,     // Memory barrier.
+      BARRIER,     // Memory barrier
+      POPCOUNT,
       COMBINE,
       WrapperJT,
       WrapperCP,
diff --git a/llvm/lib/Target/Hexagon/HexagonInstrInfoV5.td b/llvm/lib/Target/Hexagon/HexagonInstrInfoV5.td
index f2eafd95370..876c8dbb9b1 100644
--- a/llvm/lib/Target/Hexagon/HexagonInstrInfoV5.td
+++ b/llvm/lib/Target/Hexagon/HexagonInstrInfoV5.td
@@ -1,3 +1,42 @@
+//=- HexagonInstrInfoV5.td - Target Desc. for Hexagon Target -*- tablegen -*-=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file describes the Hexagon V5 instructions in TableGen format.
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// XTYPE/MPY
+//===----------------------------------------------------------------------===//
+
+let isCodeGenOnly = 0 in
+def S2_asr_i_p_rnd : S_2OpInstImm<"asr", 0b110, 0b111, u6Imm,
+      [(set I64:$dst,
+            (sra (i64 (add (i64 (sra I64:$src1, u6ImmPred:$src2)), 1)),
+                 (i32 1)))], 1>,
+      Requires<[HasV5T]> {
+  bits<6> src2;
+  let Inst{13-8} = src2;
+}
+
+let isCodeGenOnly = 0 in
+def C4_fastcorner9 : T_LOGICAL_2OP<"fastcorner9", 0b000, 0, 0>,
+  Requires<[HasV5T]> {
+  let Inst{13,7,4} = 0b111;
+}
+
+let isCodeGenOnly = 0 in
+def C4_fastcorner9_not : T_LOGICAL_2OP<"!fastcorner9", 0b000, 0, 0>,
+  Requires<[HasV5T]> {
+  let Inst{20,13,7,4} = 0b1111;
+}
+
 def SDTHexagonFCONST32 : SDTypeProfile<1, 1, [
                                             SDTCisVT<0, f32>,
                                             SDTCisPtrTy<1>]>;
@@ -52,6 +91,27 @@ def TFRI_cNotPt_f : ALU32_ri<(outs IntRegs:$dst),
            []>,
           Requires<[HasV5T]>;
 
+def SDTHexagonI32I64: SDTypeProfile<1, 1, [SDTCisVT<0, i32>,
+                                           SDTCisVT<1, i64>]>;
+
+def HexagonPOPCOUNT: SDNode<"HexagonISD::POPCOUNT", SDTHexagonI32I64>;
+
+let hasNewValue = 1, validSubTargets = HasV5SubT, isCodeGenOnly = 0 in
+def S5_popcountp : ALU64_rr<(outs IntRegs:$Rd), (ins DoubleRegs:$Rss),
+  "$Rd = popcount($Rss)",
+  [(set I32:$Rd, (HexagonPOPCOUNT I64:$Rss))], "", S_2op_tc_2_SLOT23>,
+  Requires<[HasV5T]> {
+    bits<5> Rd;
+    bits<5> Rss;
+
+    let IClass = 0b1000;
+
+    let Inst{27-21} = 0b1000011;
+    let Inst{7-5} = 0b011;
+    let Inst{4-0} = Rd;
+    let Inst{20-16} = Rss;
+  }
+
 // Convert single precision to double precision and vice-versa.
 def CONVERT_sf2df : ALU64_rr<(outs DoubleRegs:$dst), (ins IntRegs:$src),
                 "$dst = convert_sf2df($src)",
-- 
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