diff --git a/llvm/test/Transforms/InstCombine/select.ll b/llvm/test/Transforms/InstCombine/select.ll
index 4f90b14f1b260..7f6bfc4e2bbe9 100644
--- a/llvm/test/Transforms/InstCombine/select.ll
+++ b/llvm/test/Transforms/InstCombine/select.ll
@@ -1691,8 +1691,8 @@ define float @copysign3(float %x) {
 
 ; TODO: Allow undefs when matching vectors.
 
-define <2 x float> @copysign4(<2 x float> %x) {
-; CHECK-LABEL: @copysign4(
+define <2 x float> @copysign_vec_undef(<2 x float> %x) {
+; CHECK-LABEL: @copysign_vec_undef(
 ; CHECK-NEXT:    [[I:%.*]] = bitcast <2 x float> [[X:%.*]] to <2 x i32>
 ; CHECK-NEXT:    [[ISNEG:%.*]] = icmp slt <2 x i32> [[I]], zeroinitializer
 ; CHECK-NEXT:    [[R:%.*]] = select nnan arcp <2 x i1> [[ISNEG]], <2 x float> <float 4.200000e+01, float undef>, <2 x float> <float -4.200000e+01, float -4.200000e+01>
@@ -1704,6 +1704,32 @@ define <2 x float> @copysign4(<2 x float> %x) {
   ret <2 x float> %r
 }
 
+define <2 x float> @copysign_vec_undef1(<2 x float> %x) {
+; CHECK-LABEL: @copysign_vec_undef1(
+; CHECK-NEXT:    [[I:%.*]] = bitcast <2 x float> [[X:%.*]] to <2 x i32>
+; CHECK-NEXT:    [[ISNEG:%.*]] = icmp slt <2 x i32> [[I]], zeroinitializer
+; CHECK-NEXT:    [[R:%.*]] = select nnan arcp <2 x i1> [[ISNEG]], <2 x float> <float 4.200000e+01, float 4.200000e+01>, <2 x float> <float undef, float -4.200000e+01>
+; CHECK-NEXT:    ret <2 x float> [[R]]
+;
+  %i = bitcast <2 x float> %x to <2 x i32>
+  %isneg = icmp ugt <2 x i32> %i, <i32 2147483647, i32 2147483647>
+  %r = select arcp nnan <2 x i1> %isneg, <2 x float> <float 42.0, float 42.0>, <2 x float> <float undef, float -42.0>
+  ret <2 x float> %r
+}
+
+define <2 x float> @copysign_vec_undef3(<2 x float> %x) {
+; CHECK-LABEL: @copysign_vec_undef3(
+; CHECK-NEXT:    [[I:%.*]] = bitcast <2 x float> [[X:%.*]] to <2 x i32>
+; CHECK-NEXT:    [[ISNEG:%.*]] = icmp slt <2 x i32> [[I]], zeroinitializer
+; CHECK-NEXT:    [[R:%.*]] = select nnan arcp <2 x i1> [[ISNEG]], <2 x float> <float 4.200000e+01, float undef>, <2 x float> <float -4.200000e+01, float undef>
+; CHECK-NEXT:    ret <2 x float> [[R]]
+;
+  %i = bitcast <2 x float> %x to <2 x i32>
+  %isneg = icmp ugt <2 x i32> %i, <i32 2147483647, i32 2147483647>
+  %r = select arcp nnan <2 x i1> %isneg, <2 x float> <float 42.0, float undef>, <2 x float> <float -42.0, float undef>
+  ret <2 x float> %r
+}
+
 declare void @use1(i1)
 
 ; Negative test