[PATCH 2/3] R600: Use existing SDIVREM for i64

[Jan Vesely]

Signed-off-by: Jan Vesely <jan.vesely at rutgers.edu>
---
 lib/Target/R600/AMDGPUISelLowering.cpp | 25 +++++++++++++++++++++++++
 lib/Target/R600/R600ISelLowering.cpp   |  2 ++
 2 files changed, 27 insertions(+)

diff --git a/lib/Target/R600/AMDGPUISelLowering.cpp b/lib/Target/R600/AMDGPUISelLowering.cpp
index d613659..f473d1d 100644
--- a/lib/Target/R600/AMDGPUISelLowering.cpp
+++ b/lib/Target/R600/AMDGPUISelLowering.cpp
@@ -626,6 +626,31 @@ void AMDGPUTargetLowering::ReplaceNodeResults(SDNode *N,
     Results.push_back(REM);
     break;
   }
+  case ISD::SDIV: {
+    SDValue Op = SDValue(N, 0);
+    SDLoc DL(Op);
+    EVT VT = Op.getValueType();
+    SDValue SDIVREM = DAG.getNode(ISD::SDIVREM, DL, DAG.getVTList(VT, VT),
+      N->getOperand(0), N->getOperand(1));
+    Results.push_back(SDIVREM);
+    break;
+  }
+  case ISD::SREM: {
+    SDValue Op = SDValue(N, 0);
+    SDLoc DL(Op);
+    EVT VT = Op.getValueType();
+    SDValue SDIVREM = DAG.getNode(ISD::SDIVREM, DL, DAG.getVTList(VT, VT),
+      N->getOperand(0), N->getOperand(1));
+    Results.push_back(SDIVREM.getValue(1));
+    break;
+  }
+  case ISD::SDIVREM: {
+    SDValue Op = SDValue(N, 1);
+    SDValue RES = LowerSDIVREM(Op, DAG);
+    Results.push_back(RES);
+    Results.push_back(RES.getValue(1));
+    break;
+  }
   default:
     return;
   }
diff --git a/lib/Target/R600/R600ISelLowering.cpp b/lib/Target/R600/R600ISelLowering.cpp
index f0e13e5..9ab6aa4 100644
--- a/lib/Target/R600/R600ISelLowering.cpp
+++ b/lib/Target/R600/R600ISelLowering.cpp
@@ -156,6 +156,8 @@ R600TargetLowering::R600TargetLowering(TargetMachine &TM) :
   // during Type Legalization
   setOperationAction(ISD::UDIV, MVT::i64, Custom);
   setOperationAction(ISD::UREM, MVT::i64, Custom);
+  setOperationAction(ISD::SDIV, MVT::i64, Custom);
+  setOperationAction(ISD::SREM, MVT::i64, Custom);
 
   // We don't have 64-bit shifts. Thus we need either SHX i64 or SHX_PARTS i32
   //  to be Legal/Custom in order to avoid library calls.
-- 
1.9.3