[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/test/CodeGen/Mips/mips64-sret.ll b/test/CodeGen/Mips/mips64-sret.ll
index 498c5fe..e26b022 100644
--- a/test/CodeGen/Mips/mips64-sret.ll
+++ b/test/CodeGen/Mips/mips64-sret.ll
@@ -1,4 +1,4 @@
-; RUN: llc -march=mips64el -mcpu=mips64r2 -mattr=n64 -O0 < %s
+; RUN: llc -march=mips64el -mcpu=mips64r2 -mattr=n64 -O3 < %s | FileCheck %s
%struct.S = type { [8 x i32] }
@@ -6,6 +6,8 @@
define void @f(%struct.S* noalias sret %agg.result) nounwind {
entry:
+; CHECK: daddu $2, $zero, $4
+
%0 = bitcast %struct.S* %agg.result to i8*
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast (%struct.S* @g to i8*), i64 32, i32 4, i1 false)
ret void