1 files changed, 102 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-const-06.ll b/test/CodeGen/SystemZ/int-const-06.ll
new file mode 100644
index 0000000..9f14347
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-const-06.ll
@@ -0,0 +1,102 @@
+; Test moves of integers to 8-byte memory locations.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check moves of zero.
+define void @f1(i64 *%a) {
+; CHECK: f1:
+; CHECK: mvghi 0(%r2), 0
+; CHECK: br %r14
+  store i64 0, i64 *%a
+  ret void
+}
+
+; Check the high end of the signed 16-bit range.
+define void @f2(i64 *%a) {
+; CHECK: f2:
+; CHECK: mvghi 0(%r2), 32767
+; CHECK: br %r14
+  store i64 32767, i64 *%a
+  ret void
+}
+
+; Check the next value up, which can't use MVGHI.
+define void @f3(i64 *%a) {
+; CHECK: f3:
+; CHECK-NOT: mvghi
+; CHECK: br %r14
+  store i64 32768, i64 *%a
+  ret void
+}
+
+; Check moves of -1.
+define void @f4(i64 *%a) {
+; CHECK: f4:
+; CHECK: mvghi 0(%r2), -1
+; CHECK: br %r14
+  store i64 -1, i64 *%a
+  ret void
+}
+
+; Check the low end of the MVGHI range.
+define void @f5(i64 *%a) {
+; CHECK: f5:
+; CHECK: mvghi 0(%r2), -32768
+; CHECK: br %r14
+  store i64 -32768, i64 *%a
+  ret void
+}
+
+; Check the next value down, which can't use MVGHI.
+define void @f6(i64 *%a) {
+; CHECK: f6:
+; CHECK-NOT: mvghi
+; CHECK: br %r14
+  store i64 -32769, i64 *%a
+  ret void
+}
+
+; Check the high end of the MVGHI range.
+define void @f7(i64 *%a) {
+; CHECK: f7:
+; CHECK: mvghi 4088(%r2), 42
+; CHECK: br %r14
+  %ptr = getelementptr i64 *%a, i64 511
+  store i64 42, i64 *%ptr
+  ret void
+}
+
+; Check the next doubleword up, which needs separate address logic.
+; Other sequences besides this one would be OK.
+define void @f8(i64 *%a) {
+; CHECK: f8:
+; CHECK: aghi %r2, 4096
+; CHECK: mvghi 0(%r2), 42
+; CHECK: br %r14
+  %ptr = getelementptr i64 *%a, i64 512
+  store i64 42, i64 *%ptr
+  ret void
+}
+
+; Check negative displacements, which also need separate address logic.
+define void @f9(i64 *%a) {
+; CHECK: f9:
+; CHECK: aghi %r2, -8
+; CHECK: mvghi 0(%r2), 42
+; CHECK: br %r14
+  %ptr = getelementptr i64 *%a, i64 -1
+  store i64 42, i64 *%ptr
+  ret void
+}
+
+; Check that MVGHI does not allow an index
+define void @f10(i64 %src, i64 %index) {
+; CHECK: f10:
+; CHECK: agr %r2, %r3
+; CHECK: mvghi 0(%r2), 42
+; CHECK: br %r14
+  %add = add i64 %src, %index
+  %ptr = inttoptr i64 %add to i64 *
+  store i64 42, i64 *%ptr
+  ret void
+}