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diff --git a/test/CodeGen/Mips/msa/llvm-stress-s2501752154-simplified.ll b/test/CodeGen/Mips/msa/llvm-stress-s2501752154-simplified.ll
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index 0000000..564ad74
--- /dev/null
+++ b/test/CodeGen/Mips/msa/llvm-stress-s2501752154-simplified.ll
@@ -0,0 +1,27 @@
+; RUN: llc -march=mips < %s
+; RUN: llc -march=mips -mattr=+msa,+fp64 < %s
+; RUN: llc -march=mipsel < %s
+; RUN: llc -march=mipsel -mattr=+msa,+fp64 < %s
+
+; This test originally failed for MSA with a "Cannot select ..." error.
+; This happened because the legalizer treated undef's in the <4 x float>
+; constant as equivalent to the defined elements when checking if it a constant
+; splat, but then proceeded to legalize the undef's to zero, leaving it as a
+; non-splat that cannot be selected. It should have eliminated the undef's by
+; rewriting the splat constant.
+
+; It should at least successfully build.
+
+define void @autogen_SD2501752154() {
+BB:
+ %BC = bitcast <4 x i32> <i32 -1, i32 -1, i32 undef, i32 undef> to <4 x float>
+ br label %CF74
+
+CF74: ; preds = %CF74, %CF
+ %E54 = extractelement <1 x i1> undef, i32 0
+ br i1 %E54, label %CF74, label %CF79
+
+CF79: ; preds = %CF75
+ %I63 = insertelement <4 x float> %BC, float undef, i32 0
+ ret void
+}