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[mips] Make sure sret argument is returned in register V0.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166539 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Akira Hatanaka
2012-10-24 02:10:54 +00:00
parent 847a9c6d77
commit 2ef5bd3ba6
2 changed files with 6 additions and 3 deletions
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5
lib/Target/Mips/MipsISelLowering.cpp
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@@ -3539,10 +3539,11 @@ MipsTargetLowering::LowerReturn(SDValue Chain,
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"