[mips] Use 64-bit registers to return an sret pointer if target ABI is N64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166344 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 7b42686..5cc9662 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -3410,7 +3410,8 @@
if (DAG.getMachineFunction().getFunction()->hasStructRetAttr()) {
unsigned Reg = MipsFI->getSRetReturnReg();
if (!Reg) {
- Reg = MF.getRegInfo().createVirtualRegister(getRegClassFor(MVT::i32));
+ Reg = MF.getRegInfo().
+ createVirtualRegister(getRegClassFor(IsN64 ? MVT::i64 : MVT::i32));
MipsFI->setSRetReturnReg(Reg);
}
SDValue Copy = DAG.getCopyToReg(DAG.getEntryNode(), dl, Reg, InVals[0]);
@@ -3539,7 +3540,8 @@
llvm_unreachable("sret virtual register not created in the entry block");
SDValue Val = DAG.getCopyFromReg(Chain, dl, Reg, getPointerTy());
- Chain = DAG.getCopyToReg(Chain, dl, Mips::V0, Val, Flag);
+ Chain = DAG.getCopyToReg(Chain, dl, IsN64 ? Mips::V0_64 : Mips::V0, Val,
+ Flag);
Flag = Chain.getValue(1);
}