1 files changed, 130 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-move-05.ll b/test/CodeGen/SystemZ/int-move-05.ll
new file mode 100644
index 0000000..f61477e
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-move-05.ll
@@ -0,0 +1,130 @@
+; Test 16-bit GPR stores.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Test an i16 store, which should get converted into an i32 truncation.
+define void @f1(i16 *%dst, i16 %val) {
+; CHECK: f1:
+; CHECK: sth %r3, 0(%r2)
+; CHECK: br %r14
+  store i16 %val, i16 *%dst
+  ret void
+}
+
+; Test an i32 truncating store.
+define void @f2(i16 *%dst, i32 %val) {
+; CHECK: f2:
+; CHECK: sth %r3, 0(%r2)
+; CHECK: br %r14
+  %trunc = trunc i32 %val to i16
+  store i16 %trunc, i16 *%dst
+  ret void
+}
+
+; Test an i64 truncating store.
+define void @f3(i16 *%dst, i64 %val) {
+; CHECK: f3:
+; CHECK: sth %r3, 0(%r2)
+; CHECK: br %r14
+  %trunc = trunc i64 %val to i16
+  store i16 %trunc, i16 *%dst
+  ret void
+}
+
+; Check the high end of the STH range.
+define void @f4(i16 *%dst, i16 %val) {
+; CHECK: f4:
+; CHECK: sth %r3, 4094(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr i16 *%dst, i64 2047
+  store i16 %val, i16 *%ptr
+  ret void
+}
+
+; Check the next halfword up, which should use STHY instead of STH.
+define void @f5(i16 *%dst, i16 %val) {
+; CHECK: f5:
+; CHECK: sthy %r3, 4096(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr i16 *%dst, i64 2048
+  store i16 %val, i16 *%ptr
+  ret void
+}
+
+; Check the high end of the aligned STHY range.
+define void @f6(i16 *%dst, i16 %val) {
+; CHECK: f6:
+; CHECK: sthy %r3, 524286(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr i16 *%dst, i64 262143
+  store i16 %val, i16 *%ptr
+  ret void
+}
+
+; Check the next halfword up, which needs separate address logic.
+; Other sequences besides this one would be OK.
+define void @f7(i16 *%dst, i16 %val) {
+; CHECK: f7:
+; CHECK: agfi %r2, 524288
+; CHECK: sth %r3, 0(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr i16 *%dst, i64 262144
+  store i16 %val, i16 *%ptr
+  ret void
+}
+
+; Check the high end of the negative aligned STHY range.
+define void @f8(i16 *%dst, i16 %val) {
+; CHECK: f8:
+; CHECK: sthy %r3, -2(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr i16 *%dst, i64 -1
+  store i16 %val, i16 *%ptr
+  ret void
+}
+
+; Check the low end of the STHY range.
+define void @f9(i16 *%dst, i16 %val) {
+; CHECK: f9:
+; CHECK: sthy %r3, -524288(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr i16 *%dst, i64 -262144
+  store i16 %val, i16 *%ptr
+  ret void
+}
+
+; Check the next halfword down, which needs separate address logic.
+; Other sequences besides this one would be OK.
+define void @f10(i16 *%dst, i16 %val) {
+; CHECK: f10:
+; CHECK: agfi %r2, -524290
+; CHECK: sth %r3, 0(%r2)
+; CHECK: br %r14
+  %ptr = getelementptr i16 *%dst, i64 -262145
+  store i16 %val, i16 *%ptr
+  ret void
+}
+
+; Check that STH allows an index.
+define void @f11(i64 %dst, i64 %index, i16 %val) {
+; CHECK: f11:
+; CHECK: sth %r4, 4094({{%r3,%r2|%r2,%r3}})
+; CHECK: br %r14
+  %add1 = add i64 %dst, %index
+  %add2 = add i64 %add1, 4094
+  %ptr = inttoptr i64 %add2 to i16 *
+  store i16 %val, i16 *%ptr
+  ret void
+}
+
+; Check that STHY allows an index.
+define void @f12(i64 %dst, i64 %index, i16 %val) {
+; CHECK: f12:
+; CHECK: sthy %r4, 4096({{%r3,%r2|%r2,%r3}})
+; CHECK: br %r14
+  %add1 = add i64 %dst, %index
+  %add2 = add i64 %add1, 4096
+  %ptr = inttoptr i64 %add2 to i16 *
+  store i16 %val, i16 *%ptr
+  ret void
+}