forked from OSchip/llvm-project
[mips] Make sure sret argument is returned in register V0.
llvm-svn: 166539
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@ -3539,10 +3539,11 @@ MipsTargetLowering::LowerReturn(SDValue Chain,
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if (!Reg)
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llvm_unreachable("sret virtual register not created in the entry block");
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SDValue Val = DAG.getCopyFromReg(Chain, dl, Reg, getPointerTy());
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unsigned V0 = IsN64 ? Mips::V0_64 : Mips::V0;
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Chain = DAG.getCopyToReg(Chain, dl, IsN64 ? Mips::V0_64 : Mips::V0, Val,
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Flag);
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Chain = DAG.getCopyToReg(Chain, dl, V0, Val, Flag);
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Flag = Chain.getValue(1);
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MF.getRegInfo().addLiveOut(V0);
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}
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// Return on Mips is always a "jr $ra"
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@ -1,4 +1,4 @@
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; RUN: llc -march=mips64el -mcpu=mips64r2 -mattr=n64 -O0 < %s
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; RUN: llc -march=mips64el -mcpu=mips64r2 -mattr=n64 -O3 < %s | FileCheck %s
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%struct.S = type { [8 x i32] }
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@ -6,6 +6,8 @@
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define void @f(%struct.S* noalias sret %agg.result) nounwind {
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entry:
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; CHECK: daddu $2, $zero, $4
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%0 = bitcast %struct.S* %agg.result to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast (%struct.S* @g to i8*), i64 32, i32 4, i1 false)
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ret void
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