%4 = lshr <4 x i32> %3, <i32 15, i32 15, i32 15, i32 15>
ret <4 x i32> %4
}
+
+define <4 x i32> @knownbits_mask_ashr_shuffle_lshr(<4 x i32> %a0) nounwind {
+; X32-LABEL: knownbits_mask_ashr_shuffle_lshr:
+; X32: # BB#0:
+; X32-NEXT: vpand {{\.LCPI.*}}, %xmm0, %xmm0
+; X32-NEXT: vpsrad $15, %xmm0, %xmm0
+; X32-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,0,3,3]
+; X32-NEXT: vpsrld $30, %xmm0, %xmm0
+; X32-NEXT: retl
+;
+; X64-LABEL: knownbits_mask_ashr_shuffle_lshr:
+; X64: # BB#0:
+; X64-NEXT: vpand {{.*}}(%rip), %xmm0, %xmm0
+; X64-NEXT: vpsrad $15, %xmm0, %xmm0
+; X64-NEXT: vpshufd {{.*#+}} xmm0 = xmm0[0,0,3,3]
+; X64-NEXT: vpsrld $30, %xmm0, %xmm0
+; X64-NEXT: retq
+ %1 = and <4 x i32> %a0, <i32 131071, i32 -1, i32 -1, i32 131071>
+ %2 = ashr <4 x i32> %1, <i32 15, i32 15, i32 15, i32 15>
+ %3 = shufflevector <4 x i32> %2, <4 x i32> undef, <4 x i32> <i32 0, i32 0, i32 3, i32 3>
+ %4 = lshr <4 x i32> %3, <i32 30, i32 30, i32 30, i32 30>
+ ret <4 x i32> %4
+}