From 8be1fa5dc5c66d74581a4ec4fb9920e4535ec600 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 19 Oct 2005 01:38:02 +0000
Subject: [PATCH] Convert these cases to patterns

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23811 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/PowerPC/PPCISelDAGToDAG.cpp | 28 --------------------------
 lib/Target/PowerPC/PPCInstrInfo.td     | 20 +++++++++---------
 2 files changed, 11 insertions(+), 37 deletions(-)

diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 207b2e5042f..7cc92694cb3 100644
--- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -1211,34 +1211,6 @@ SDOperand PPCDAGToDAGISel::Select(SDOperand Op) {
       
     // Other cases are autogenerated.
     break;
-  case ISD::TRUNCATE: {
-    assert(N->getValueType(0) == MVT::i32 && 
-           N->getOperand(0).getValueType() == MVT::i64 &&
-           "TRUNCATE only supported for i64 -> i32");
-    SDOperand Op0 = Select(N->getOperand(0));
-    CurDAG->SelectNodeTo(N, PPC::OR8To4, MVT::i32, Op0, Op0);
-    break;
-  }
-  case ISD::ANY_EXTEND:
-    switch(N->getValueType(0)) {
-    default: assert(0 && "Unhandled type in ANY_EXTEND");
-    case MVT::i64: {
-      SDOperand Op0 = Select(N->getOperand(0));
-      CurDAG->SelectNodeTo(N, PPC::OR4To8, MVT::i64, Op0, Op0);
-      break;
-    }
-    }
-    return SDOperand(N, 0);
-  case ISD::ZERO_EXTEND: {
-    assert(N->getValueType(0) == MVT::i64 && 
-           N->getOperand(0).getValueType() == MVT::i32 &&
-           "ZERO_EXTEND only supported for i32 -> i64");
-    SDOperand Op0 = Select(N->getOperand(0));
-    Op0 = CurDAG->getTargetNode(PPC::OR4To8, MVT::i64, Op0, Op0);
-    CurDAG->SelectNodeTo(N, PPC::RLDICL, MVT::i64, Op0, getI32Imm(0),
-                         getI32Imm(32));
-    return SDOperand(N, 0);
-  }
   case ISD::SHL: {
     unsigned Imm, SH, MB, ME;
     if (isOpcWithIntImmediate(N->getOperand(0).Val, ISD::AND, Imm) &&
diff --git a/lib/Target/PowerPC/PPCInstrInfo.td b/lib/Target/PowerPC/PPCInstrInfo.td
index 40611bef06e..3a3030a3e6d 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/lib/Target/PowerPC/PPCInstrInfo.td
@@ -18,14 +18,8 @@ include "PPCInstrFormats.td"
 //===----------------------------------------------------------------------===//
 // PowerPC specific transformation functions and pattern fragments.
 //
-def GET_ZERO : SDNodeXForm<imm, [{
-  // Transformation function: get the low 16 bits.
-  return getI32Imm(0);
-}]>;
-def GET_32 : SDNodeXForm<imm, [{
-  // Transformation function: get the low 16 bits.
-  return getI32Imm(32);
-}]>;
+def GET_ZERO : SDNodeXForm<add, [{return getI32Imm(0);}]>;  // HACK
+def GET_32 : SDNodeXForm<add, [{ return getI32Imm(32);}]>;  // HACK
 
 def LO16 : SDNodeXForm<imm, [{
   // Transformation function: get the low 16 bits.
@@ -716,7 +710,15 @@ def : Pat<(or GPRC:$in, imm:$imm),
 // XOR an arbitrary immediate.
 def : Pat<(xor GPRC:$in, imm:$imm),
           (XORIS (XORI GPRC:$in, (LO16 imm:$imm)), (HI16 imm:$imm))>;
-          
+
+def : Pat<(zext GPRC:$in),
+          (RLDICL (OR4To8 GPRC:$in, GPRC:$in), (GET_ZERO imm:$in),
+           (GET_32 imm:$in))>;
+def : Pat<(anyext GPRC:$in),
+          (OR4To8 GPRC:$in, GPRC:$in)>;
+def : Pat<(trunc G8RC:$in),
+          (OR8To4 G8RC:$in, G8RC:$in)>;
+
 // Same as above, but using a temporary. FIXME: implement temporaries :)
 /*
 def : Pattern<(xor GPRC:$in, imm:$imm),