1 files changed, 67 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-add-14.ll b/test/CodeGen/SystemZ/int-add-14.ll
new file mode 100644
index 0000000..0732378
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-add-14.ll
@@ -0,0 +1,67 @@
+; Test 32-bit addition in which the second operand is constant and in which
+; three-operand forms are available.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
+
+; Check additions of 1.
+define i32 @f1(i32 %a, i32 %b) {
+; CHECK-LABEL: f1:
+; CHECK: ahik %r2, %r3, 1
+; CHECK: br %r14
+  %add = add i32 %b, 1
+  ret i32 %add
+}
+
+; Check the high end of the AHIK range.
+define i32 @f2(i32 %a, i32 %b) {
+; CHECK-LABEL: f2:
+; CHECK: ahik %r2, %r3, 32767
+; CHECK: br %r14
+  %add = add i32 %b, 32767
+  ret i32 %add
+}
+
+; Check the next value up, which must use AFI instead.
+define i32 @f3(i32 %a, i32 %b) {
+; CHECK-LABEL: f3:
+; CHECK: afi {{%r[0-5]}}, 32768
+; CHECK: br %r14
+  %add = add i32 %b, 32768
+  ret i32 %add
+}
+
+; Check the high end of the negative AHIK range.
+define i32 @f4(i32 %a, i32 %b) {
+; CHECK-LABEL: f4:
+; CHECK: ahik %r2, %r3, -1
+; CHECK: br %r14
+  %add = add i32 %b, -1
+  ret i32 %add
+}
+
+; Check the low end of the AHIK range.
+define i32 @f5(i32 %a, i32 %b) {
+; CHECK-LABEL: f5:
+; CHECK: ahik %r2, %r3, -32768
+; CHECK: br %r14
+  %add = add i32 %b, -32768
+  ret i32 %add
+}
+
+; Check the next value down, which must use AFI instead.
+define i32 @f6(i32 %a, i32 %b) {
+; CHECK-LABEL: f6:
+; CHECK: afi {{%r[0-5]}}, -32769
+; CHECK: br %r14
+  %add = add i32 %b, -32769
+  ret i32 %add
+}
+
+; Check that AHI is still used in obvious cases.
+define i32 @f7(i32 %a) {
+; CHECK-LABEL: f7:
+; CHECK: ahi %r2, 1
+; CHECK: br %r14
+  %add = add i32 %a, 1
+  ret i32 %add
+}