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+; Test 32-bit ANDs in which the second operand is constant.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check the lowest useful NILF value.
+define i32 @f1(i32 %a) {
+; CHECK: f1:
+; CHECK: nilf %r2, 1
+; CHECK: br %r14
+ %and = and i32 %a, 1
+ ret i32 %and
+}
+
+; Check the highest 16-bit constant that must be handled by NILF.
+define i32 @f2(i32 %a) {
+; CHECK: f2:
+; CHECK: nilf %r2, 65534
+; CHECK: br %r14
+ %and = and i32 %a, 65534
+ ret i32 %and
+}
+
+; ANDs of 0xffff are zero extensions from i16.
+define i32 @f3(i32 %a) {
+; CHECK: f3:
+; CHECK: llhr %r2, %r2
+; CHECK: br %r14
+ %and = and i32 %a, 65535
+ ret i32 %and
+}
+
+; Check the next value up, which must again use NILF.
+define i32 @f4(i32 %a) {
+; CHECK: f4:
+; CHECK: nilf %r2, 65536
+; CHECK: br %r14
+ %and = and i32 %a, 65536
+ ret i32 %and
+}
+
+; Check the lowest useful NILH value. (LLHR is used instead of NILH of 0.)
+define i32 @f5(i32 %a) {
+; CHECK: f5:
+; CHECK: nilh %r2, 1
+; CHECK: br %r14
+ %and = and i32 %a, 131071
+ ret i32 %and
+}
+
+; Check the highest useful NILF value.
+define i32 @f6(i32 %a) {
+; CHECK: f6:
+; CHECK: nilf %r2, 4294901758
+; CHECK: br %r14
+ %and = and i32 %a, -65538
+ ret i32 %and
+}
+
+; Check the highest useful NILH value, which is one up from the above.
+define i32 @f7(i32 %a) {
+; CHECK: f7:
+; CHECK: nilh %r2, 65534
+; CHECK: br %r14
+ %and = and i32 %a, -65537
+ ret i32 %and
+}
+
+; Check the low end of the NILL range, which is one up again.
+define i32 @f8(i32 %a) {
+; CHECK: f8:
+; CHECK: nill %r2, 0
+; CHECK: br %r14
+ %and = and i32 %a, -65536
+ ret i32 %and
+}
+
+; Check the next value up.
+define i32 @f9(i32 %a) {
+; CHECK: f9:
+; CHECK: nill %r2, 1
+; CHECK: br %r14
+ %and = and i32 %a, -65535
+ ret i32 %and
+}
+
+; Check the highest useful NILL value.
+define i32 @f10(i32 %a) {
+; CHECK: f10:
+; CHECK: nill %r2, 65534
+; CHECK: br %r14
+ %and = and i32 %a, -2
+ ret i32 %and
+}