From: Bruno Cardoso Lopes <bruno.cardoso@gmail.com>
Date: Fri, 29 Jul 2011 01:31:11 +0000 (+0000)
Subject: Add DecodeShuffle shuffle support for VPERMIPD variantes
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=2eb4c2bcadfbef9d3c4e2fbb6478ed5dc3d65524;p=oota-llvm.git

Add DecodeShuffle shuffle support for VPERMIPD variantes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136452 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/InstPrinter/X86InstComments.cpp b/lib/Target/X86/InstPrinter/X86InstComments.cpp
index 99e8e316fe8..5bf93c782b7 100644
--- a/lib/Target/X86/InstPrinter/X86InstComments.cpp
+++ b/lib/Target/X86/InstPrinter/X86InstComments.cpp
@@ -205,13 +205,22 @@ void llvm::EmitAnyX86InstComments(const MCInst *MI, raw_ostream &OS,
     DecodeUNPCKHPMask(4, ShuffleMask);
     Src1Name = getRegName(MI->getOperand(0).getReg());
     break;
+  case X86::VPERMILPSri:
+    DecodeVPERMILPSMask(4, MI->getOperand(2).getImm(),
+                        ShuffleMask);
+    Src1Name = getRegName(MI->getOperand(0).getReg());
   case X86::VPERMILPSYri:
     DecodeVPERMILPSMask(8, MI->getOperand(2).getImm(),
                         ShuffleMask);
     Src1Name = getRegName(MI->getOperand(0).getReg());
     break;
+  case X86::VPERMILPDri:
+    DecodeVPERMILPDMask(2, MI->getOperand(2).getImm(),
+                        ShuffleMask);
+    Src1Name = getRegName(MI->getOperand(0).getReg());
+    break;
   case X86::VPERMILPDYri:
-    DecodeVPERMILPSMask(4, MI->getOperand(2).getImm(),
+    DecodeVPERMILPDMask(4, MI->getOperand(2).getImm(),
                         ShuffleMask);
     Src1Name = getRegName(MI->getOperand(0).getReg());
     break;
diff --git a/lib/Target/X86/Utils/X86ShuffleDecode.cpp b/lib/Target/X86/Utils/X86ShuffleDecode.cpp
index 2c8a9e4abc6..fe0b3a20c1f 100644
--- a/lib/Target/X86/Utils/X86ShuffleDecode.cpp
+++ b/lib/Target/X86/Utils/X86ShuffleDecode.cpp
@@ -186,29 +186,36 @@ void DecodeUNPCKLPMask(EVT VT,
   }
 }
 
-void DecodeVPERMILPSMask(unsigned NElts, unsigned Imm,
-                        SmallVectorImpl<unsigned> &ShuffleMask) {
-  DecodeVPERMILMask(MVT::getVectorVT(MVT::i32, NElts), Imm, ShuffleMask);
-}
+// DecodeVPERMILPSMask - Decodes VPERMILPS permutes for any 128-bit 32-bit
+// elements. For 256-bit vectors, it's considered as two 128 lanes, the
+// referenced elements can't cross lanes and the mask of the first lane must
+// be the same of the second.
+void DecodeVPERMILPSMask(unsigned NumElts, unsigned Imm,
+                         SmallVectorImpl<unsigned> &ShuffleMask) {
+  unsigned NumLanes = (NumElts*32)/128;
+  unsigned LaneSize = NumElts/NumLanes;
 
-void DecodeVPERMILPDMask(unsigned NElts, unsigned Imm,
-                        SmallVectorImpl<unsigned> &ShuffleMask) {
-  DecodeVPERMILMask(MVT::getVectorVT(MVT::i64, NElts), Imm, ShuffleMask);
+  for (unsigned l = 0; l != NumLanes; ++l) {
+    for (unsigned i = 0; i != LaneSize; ++i) {
+      unsigned Idx = (Imm >> (i*2)) & 0x3 ;
+      ShuffleMask.push_back(Idx+(l*LaneSize));
+    }
+  }
 }
 
-// DecodeVPERMILMask - Decodes VPERMIL permutes for any 128-bit
-// with 32/64-bit elements. For 256-bit vectors, it's considered
-// as two 128 lanes and the mask of the first lane should be
-// identical of the second one.
-void DecodeVPERMILMask(EVT VT, unsigned Imm,
-                       SmallVectorImpl<unsigned> &ShuffleMask) {
-  unsigned NumElts = VT.getVectorNumElements();
-  unsigned NumLanes = VT.getSizeInBits()/128;
+// DecodeVPERMILPDMask - Decodes VPERMILPD permutes for any 128-bit 64-bit
+// elements. For 256-bit vectors, it's considered as two 128 lanes, the
+// referenced elements can't cross lanes but the mask of the first lane can
+// be the different of the second (not like VPERMILPS).
+void DecodeVPERMILPDMask(unsigned NumElts, unsigned Imm,
+                         SmallVectorImpl<unsigned> &ShuffleMask) {
+  unsigned NumLanes = (NumElts*64)/128;
+  unsigned LaneSize = NumElts/NumLanes;
 
-  for (unsigned l = 0; l != NumLanes; ++l) {
-    for (unsigned i = 0; i != NumElts/NumLanes; ++i) {
-      unsigned Idx = (Imm >> (i*2)) & 0x3 ;
-      ShuffleMask.push_back(Idx+(l*NumElts/NumLanes));
+  for (unsigned l = 0; l < NumLanes; ++l) {
+    for (unsigned i = l*LaneSize; i < LaneSize*(l+1); ++i) {
+      unsigned Idx = (Imm >> i) & 0x1;
+      ShuffleMask.push_back(Idx+(l*LaneSize));
     }
   }
 }
diff --git a/lib/Target/X86/Utils/X86ShuffleDecode.h b/lib/Target/X86/Utils/X86ShuffleDecode.h
index 4a5214028fa..1b11c6e3c26 100644
--- a/lib/Target/X86/Utils/X86ShuffleDecode.h
+++ b/lib/Target/X86/Utils/X86ShuffleDecode.h
@@ -83,19 +83,20 @@ void DecodeUNPCKLPMask(EVT VT,
                        SmallVectorImpl<unsigned> &ShuffleMask);
 
 
+// DecodeVPERMILPSMask - Decodes VPERMILPS permutes for any 128-bit 32-bit
+// elements. For 256-bit vectors, it's considered as two 128 lanes, the
+// referenced elements can't cross lanes and the mask of the first lane must
+// be the same of the second.
 void DecodeVPERMILPSMask(unsigned NElts, unsigned Imm,
                         SmallVectorImpl<unsigned> &ShuffleMask);
 
+// DecodeVPERMILPDMask - Decodes VPERMILPD permutes for any 128-bit 64-bit
+// elements. For 256-bit vectors, it's considered as two 128 lanes, the
+// referenced elements can't cross lanes but the mask of the first lane can
+// be the different of the second (not like VPERMILPS).
 void DecodeVPERMILPDMask(unsigned NElts, unsigned Imm,
                         SmallVectorImpl<unsigned> &ShuffleMask);
 
-// DecodeVPERMILMask - Decodes VPERMIL permutes for any 128-bit
-// with 32/64-bit elements. For 256-bit vectors, it's considered
-// as two 128 lanes and the mask of the first lane should be
-// identical of the second one.
-void DecodeVPERMILMask(EVT VT, unsigned Imm,
-                       SmallVectorImpl<unsigned> &ShuffleMask);
-
 } // llvm namespace
 
 #endif
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 7baa9642400..d229592587d 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -4236,11 +4236,25 @@ static SDValue getShuffleScalarElt(SDNode *N, int Index, SelectionDAG &DAG,
                                  Depth+1);
     }
     case X86ISD::VPERMILPS:
+      ImmN = N->getOperand(N->getNumOperands()-1);
+      DecodeVPERMILPSMask(4, cast<ConstantSDNode>(ImmN)->getZExtValue(),
+                        ShuffleMask);
+      break;
     case X86ISD::VPERMILPSY:
-      // FIXME: Implement the other types
       ImmN = N->getOperand(N->getNumOperands()-1);
-      DecodeVPERMILMask(VT, cast<ConstantSDNode>(ImmN)->getZExtValue(),
+      DecodeVPERMILPSMask(8, cast<ConstantSDNode>(ImmN)->getZExtValue(),
+                        ShuffleMask);
+      break;
+    case X86ISD::VPERMILPD:
+      ImmN = N->getOperand(N->getNumOperands()-1);
+      DecodeVPERMILPDMask(2, cast<ConstantSDNode>(ImmN)->getZExtValue(),
                         ShuffleMask);
+      break;
+    case X86ISD::VPERMILPDY:
+      ImmN = N->getOperand(N->getNumOperands()-1);
+      DecodeVPERMILPDMask(4, cast<ConstantSDNode>(ImmN)->getZExtValue(),
+                        ShuffleMask);
+      break;
     default:
       assert("not implemented for target shuffle node");
       return SDValue();