[PowerPC] Revert commit r339779

This commit has caused failures in some internal benchmarks. Temporarily
reverting this patch until the issue can be diagnosed and fixed.

llvm-svn: 340740

4 files changed, 16 insertions, 9 deletions

diff --git a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 789d8620155..54239c228d9 100644
--- a/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -4647,6 +4647,14 @@ void PPCDAGToDAGISel::Select(SDNode *N) {
     CurDAG->SelectNodeTo(N, SelectCCOp, N->getValueType(0), Ops);
     return;
   }
+  case ISD::VSELECT:
+    if (PPCSubTarget->hasVSX()) {
+      SDValue Ops[] = { N->getOperand(2), N->getOperand(1), N->getOperand(0) };
+      CurDAG->SelectNodeTo(N, PPC::XXSEL, N->getValueType(0), Ops);
+      return;
+    }
+    break;
+
   case ISD::VECTOR_SHUFFLE:
     if (PPCSubTarget->hasVSX() && (N->getValueType(0) == MVT::v2f64 ||
                                   N->getValueType(0) == MVT::v2i64)) {
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
index 2b575317592..2a1a2aef058 100644
--- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -586,8 +586,6 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM,
       AddPromotedToType (ISD::LOAD  , VT, MVT::v4i32);
       setOperationAction(ISD::SELECT, VT, Promote);
       AddPromotedToType (ISD::SELECT, VT, MVT::v4i32);
-      setOperationAction(ISD::VSELECT, VT, Promote);
-      AddPromotedToType (ISD::VSELECT, VT, MVT::v4i32);
       setOperationAction(ISD::SELECT_CC, VT, Promote);
       AddPromotedToType (ISD::SELECT_CC, VT, MVT::v4i32);
       setOperationAction(ISD::STORE, VT, Promote);
@@ -628,6 +626,7 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM,
       setOperationAction(ISD::SCALAR_TO_VECTOR, VT, Expand);
       setOperationAction(ISD::FPOW, VT, Expand);
       setOperationAction(ISD::BSWAP, VT, Expand);
+      setOperationAction(ISD::VSELECT, VT, Expand);
       setOperationAction(ISD::SIGN_EXTEND_INREG, VT, Expand);
       setOperationAction(ISD::ROTL, VT, Expand);
       setOperationAction(ISD::ROTR, VT, Expand);
@@ -650,7 +649,6 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM,
     setOperationAction(ISD::LOAD  , MVT::v4i32, Legal);
     setOperationAction(ISD::SELECT, MVT::v4i32,
                        Subtarget.useCRBits() ? Legal : Expand);
-    setOperationAction(ISD::VSELECT, MVT::v4i32, Legal);
     setOperationAction(ISD::STORE , MVT::v4i32, Legal);
     setOperationAction(ISD::FP_TO_SINT, MVT::v4i32, Legal);
     setOperationAction(ISD::FP_TO_UINT, MVT::v4i32, Legal);
@@ -729,6 +727,12 @@ PPCTargetLowering::PPCTargetLowering(const PPCTargetMachine &TM,
       setOperationAction(ISD::FDIV, MVT::v2f64, Legal);
       setOperationAction(ISD::FSQRT, MVT::v2f64, Legal);
 
+      setOperationAction(ISD::VSELECT, MVT::v16i8, Legal);
+      setOperationAction(ISD::VSELECT, MVT::v8i16, Legal);
+      setOperationAction(ISD::VSELECT, MVT::v4i32, Legal);
+      setOperationAction(ISD::VSELECT, MVT::v4f32, Legal);
+      setOperationAction(ISD::VSELECT, MVT::v2f64, Legal);
+
       // Share the Altivec comparison restrictions.
       setCondCodeAction(ISD::SETUO, MVT::v2f64, Expand);
       setCondCodeAction(ISD::SETUEQ, MVT::v2f64, Expand);
diff --git a/llvm/lib/Target/PowerPC/PPCInstrAltivec.td b/llvm/lib/Target/PowerPC/PPCInstrAltivec.td
index 587a2901845..24969d7ef85 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrAltivec.td
+++ b/llvm/lib/Target/PowerPC/PPCInstrAltivec.td
@@ -1051,10 +1051,6 @@ def : Pat<(v4f32 (ftrunc v4f32:$vA)),
 def : Pat<(v4f32 (fnearbyint v4f32:$vA)),
           (VRFIN $vA)>;
 
-// Vector selection
-def : Pat<(v4i32 (vselect v4i32:$vA, v4i32:$vB, v4i32:$vC)),
-          (VSEL $vC, $vB, $vA)>;
-
 } // end HasAltivec
 
 def HasP8Altivec : Predicate<"PPCSubTarget->hasP8Altivec()">;
diff --git a/llvm/lib/Target/PowerPC/PPCInstrVSX.td b/llvm/lib/Target/PowerPC/PPCInstrVSX.td
index 3a792d82382..781a3277441 100644
--- a/llvm/lib/Target/PowerPC/PPCInstrVSX.td
+++ b/llvm/lib/Target/PowerPC/PPCInstrVSX.td
@@ -870,8 +870,7 @@ let Uses = [RM] in {
                              "xxpermdi $XT, $XA, $XA, $DM", IIC_VecPerm, []>;
   def XXSEL : XX4Form<60, 3,
                       (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB, vsrc:$XC),
-                      "xxsel $XT, $XA, $XB, $XC", IIC_VecPerm,
-                      [(set v4i32:$XT, (vselect v4i32:$XC, v4i32:$XB, v4i32:$XA))]>;
+                      "xxsel $XT, $XA, $XB, $XC", IIC_VecPerm, []>;
 
   def XXSLDWI : XX3Form_2<60, 2,
                        (outs vsrc:$XT), (ins vsrc:$XA, vsrc:$XB, u2imm:$SHW),