[mips] Make sure sret argument is returned in register V0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166539 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsISelLowering.cpp b/lib/Target/Mips/MipsISelLowering.cpp
index 5cc9662..91bb037 100644
--- a/lib/Target/Mips/MipsISelLowering.cpp
+++ b/lib/Target/Mips/MipsISelLowering.cpp
@@ -3539,10 +3539,11 @@
if (!Reg)
llvm_unreachable("sret virtual register not created in the entry block");
SDValue Val = DAG.getCopyFromReg(Chain, dl, Reg, getPointerTy());
+ unsigned V0 = IsN64 ? Mips::V0_64 : Mips::V0;
- Chain = DAG.getCopyToReg(Chain, dl, IsN64 ? Mips::V0_64 : Mips::V0, Val,
- Flag);
+ Chain = DAG.getCopyToReg(Chain, dl, V0, Val, Flag);
Flag = Chain.getValue(1);
+ MF.getRegInfo().addLiveOut(V0);
}
// Return on Mips is always a "jr $ra"