Vector function results go into V2 according to GCC. The darwin ABI doc

doesn't say where they go :-/

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27579 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index f7643b84073d6460599fccaff75aad13a01909cb..99de51bf77d233cba2f487d0f3cd8ee52c374641 100644 (file)
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -877,7 +877,16 @@ SDOperand PPCTargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) {
       return SDOperand(); // ret void is legal
     case 2: {
       MVT::ValueType ArgVT = Op.getOperand(1).getValueType();
-      unsigned ArgReg = MVT::isInteger(ArgVT) ? PPC::R3 : PPC::F1;
+      unsigned ArgReg;
+      if (MVT::isVector(ArgVT))
+        ArgReg = PPC::V2;
+      else if (MVT::isInteger(ArgVT))
+        ArgReg = PPC::R3;
+      else {
+        assert(MVT::isFloatingPoint(ArgVT));
+        ArgReg = PPC::F1;
+      }
+      
       Copy = DAG.getCopyToReg(Op.getOperand(0), ArgReg, Op.getOperand(1),
                               SDOperand());