1 ; Test 16-bit GPR stores.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 ; Test an i16 store, which should get converted into an i32 truncation.
6 define void @f1(i16 *%dst, i16 %val) {
8 ; CHECK: sth %r3, 0(%r2)
10 store i16 %val, i16 *%dst
14 ; Test an i32 truncating store.
15 define void @f2(i16 *%dst, i32 %val) {
17 ; CHECK: sth %r3, 0(%r2)
19 %trunc = trunc i32 %val to i16
20 store i16 %trunc, i16 *%dst
24 ; Test an i64 truncating store.
25 define void @f3(i16 *%dst, i64 %val) {
27 ; CHECK: sth %r3, 0(%r2)
29 %trunc = trunc i64 %val to i16
30 store i16 %trunc, i16 *%dst
34 ; Check the high end of the STH range.
35 define void @f4(i16 *%dst, i16 %val) {
37 ; CHECK: sth %r3, 4094(%r2)
39 %ptr = getelementptr i16 *%dst, i64 2047
40 store i16 %val, i16 *%ptr
44 ; Check the next halfword up, which should use STHY instead of STH.
45 define void @f5(i16 *%dst, i16 %val) {
47 ; CHECK: sthy %r3, 4096(%r2)
49 %ptr = getelementptr i16 *%dst, i64 2048
50 store i16 %val, i16 *%ptr
54 ; Check the high end of the aligned STHY range.
55 define void @f6(i16 *%dst, i16 %val) {
57 ; CHECK: sthy %r3, 524286(%r2)
59 %ptr = getelementptr i16 *%dst, i64 262143
60 store i16 %val, i16 *%ptr
64 ; Check the next halfword up, which needs separate address logic.
65 ; Other sequences besides this one would be OK.
66 define void @f7(i16 *%dst, i16 %val) {
68 ; CHECK: agfi %r2, 524288
69 ; CHECK: sth %r3, 0(%r2)
71 %ptr = getelementptr i16 *%dst, i64 262144
72 store i16 %val, i16 *%ptr
76 ; Check the high end of the negative aligned STHY range.
77 define void @f8(i16 *%dst, i16 %val) {
79 ; CHECK: sthy %r3, -2(%r2)
81 %ptr = getelementptr i16 *%dst, i64 -1
82 store i16 %val, i16 *%ptr
86 ; Check the low end of the STHY range.
87 define void @f9(i16 *%dst, i16 %val) {
89 ; CHECK: sthy %r3, -524288(%r2)
91 %ptr = getelementptr i16 *%dst, i64 -262144
92 store i16 %val, i16 *%ptr
96 ; Check the next halfword down, which needs separate address logic.
97 ; Other sequences besides this one would be OK.
98 define void @f10(i16 *%dst, i16 %val) {
100 ; CHECK: agfi %r2, -524290
101 ; CHECK: sth %r3, 0(%r2)
103 %ptr = getelementptr i16 *%dst, i64 -262145
104 store i16 %val, i16 *%ptr
108 ; Check that STH allows an index.
109 define void @f11(i64 %dst, i64 %index, i16 %val) {
111 ; CHECK: sth %r4, 4094({{%r3,%r2|%r2,%r3}})
113 %add1 = add i64 %dst, %index
114 %add2 = add i64 %add1, 4094
115 %ptr = inttoptr i64 %add2 to i16 *
116 store i16 %val, i16 *%ptr
120 ; Check that STHY allows an index.
121 define void @f12(i64 %dst, i64 %index, i16 %val) {
123 ; CHECK: sthy %r4, 4096({{%r3,%r2|%r2,%r3}})
125 %add1 = add i64 %dst, %index
126 %add2 = add i64 %add1, 4096
127 %ptr = inttoptr i64 %add2 to i16 *
128 store i16 %val, i16 *%ptr