1 files changed, 128 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-add-12.ll b/test/CodeGen/SystemZ/int-add-12.ll
new file mode 100644
index 0000000..ae1c1f7
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-add-12.ll
@@ -0,0 +1,128 @@
+; Test 64-bit additions of constants to memory.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check additions of 1.
+define void @f1(i64 *%ptr) {
+; CHECK: f1:
+; CHECK: agsi 0(%r2), 1
+; CHECK: br %r14
+  %val = load i64 *%ptr
+  %add = add i64 %val, 127
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check the high end of the constant range.
+define void @f2(i64 *%ptr) {
+; CHECK: f2:
+; CHECK: agsi 0(%r2), 127
+; CHECK: br %r14
+  %val = load i64 *%ptr
+  %add = add i64 %val, 127
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check the next constant up, which must use an addition and a store.
+; Both LG/AGHI and LGHI/AG would be OK.
+define void @f3(i64 *%ptr) {
+; CHECK: f3:
+; CHECK-NOT: agsi
+; CHECK: stg %r0, 0(%r2)
+; CHECK: br %r14
+  %val = load i64 *%ptr
+  %add = add i64 %val, 128
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check the low end of the constant range.
+define void @f4(i64 *%ptr) {
+; CHECK: f4:
+; CHECK: agsi 0(%r2), -128
+; CHECK: br %r14
+  %val = load i64 *%ptr
+  %add = add i64 %val, -128
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check the next value down, with the same comment as f3.
+define void @f5(i64 *%ptr) {
+; CHECK: f5:
+; CHECK-NOT: agsi
+; CHECK: stg %r0, 0(%r2)
+; CHECK: br %r14
+  %val = load i64 *%ptr
+  %add = add i64 %val, -129
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check the high end of the aligned AGSI range.
+define void @f6(i64 *%base) {
+; CHECK: f6:
+; CHECK: agsi 524280(%r2), 1
+; CHECK: br %r14
+  %ptr = getelementptr i64 *%base, i64 65535
+  %val = load i64 *%ptr
+  %add = add i64 %val, 1
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check the next doubleword up, which must use separate address logic.
+; Other sequences besides this one would be OK.
+define void @f7(i64 *%base) {
+; CHECK: f7:
+; CHECK: agfi %r2, 524288
+; CHECK: agsi 0(%r2), 1
+; CHECK: br %r14
+  %ptr = getelementptr i64 *%base, i64 65536
+  %val = load i64 *%ptr
+  %add = add i64 %val, 1
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check the low end of the AGSI range.
+define void @f8(i64 *%base) {
+; CHECK: f8:
+; CHECK: agsi -524288(%r2), 1
+; CHECK: br %r14
+  %ptr = getelementptr i64 *%base, i64 -65536
+  %val = load i64 *%ptr
+  %add = add i64 %val, 1
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check the next doubleword down, which must use separate address logic.
+; Other sequences besides this one would be OK.
+define void @f9(i64 *%base) {
+; CHECK: f9:
+; CHECK: agfi %r2, -524296
+; CHECK: agsi 0(%r2), 1
+; CHECK: br %r14
+  %ptr = getelementptr i64 *%base, i64 -65537
+  %val = load i64 *%ptr
+  %add = add i64 %val, 1
+  store i64 %add, i64 *%ptr
+  ret void
+}
+
+; Check that AGSI does not allow indices.
+define void @f10(i64 %base, i64 %index) {
+; CHECK: f10:
+; CHECK: agr %r2, %r3
+; CHECK: agsi 8(%r2), 1
+; CHECK: br %r14
+  %add1 = add i64 %base, %index
+  %add2 = add i64 %add1, 8
+  %ptr = inttoptr i64 %add2 to i64 *
+  %val = load i64 *%ptr
+  %add = add i64 %val, 1
+  store i64 %add, i64 *%ptr
+  ret void
+}