1 ; Test memcpy using MVC.
3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
5 declare void @llvm.memcpy.p0i8.p0i8.i32(i8 *nocapture, i8 *nocapture, i32, i32, i1) nounwind
6 declare void @llvm.memcpy.p0i8.p0i8.i64(i8 *nocapture, i8 *nocapture, i64, i32, i1) nounwind
7 declare void @foo(i8 *, i8 *)
9 ; Test a no-op move, i32 version.
10 define void @f1(i8 *%dest, i8 *%src) {
15 call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 0, i32 1,
20 ; Test a no-op move, i64 version.
21 define void @f2(i8 *%dest, i8 *%src) {
26 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 0, i32 1,
31 ; Test a 1-byte move, i32 version.
32 define void @f3(i8 *%dest, i8 *%src) {
34 ; CHECK: mvc 0(1,%r2), 0(%r3)
36 call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 1, i32 1,
41 ; Test a 1-byte move, i64 version.
42 define void @f4(i8 *%dest, i8 *%src) {
44 ; CHECK: mvc 0(1,%r2), 0(%r3)
46 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1, i32 1,
51 ; Test the upper range of a single MVC, i32 version.
52 define void @f5(i8 *%dest, i8 *%src) {
54 ; CHECK: mvc 0(256,%r2), 0(%r3)
56 call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 256, i32 1,
61 ; Test the upper range of a single MVC, i64 version.
62 define void @f6(i8 *%dest, i8 *%src) {
64 ; CHECK: mvc 0(256,%r2), 0(%r3)
66 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 256, i32 1,
71 ; Test the first case that needs two MVCs.
72 define void @f7(i8 *%dest, i8 *%src) {
74 ; CHECK: mvc 0(256,%r2), 0(%r3)
75 ; CHECK: mvc 256(1,%r2), 256(%r3)
77 call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 257, i32 1,
82 ; Test the last-but-one case that needs two MVCs.
83 define void @f8(i8 *%dest, i8 *%src) {
85 ; CHECK: mvc 0(256,%r2), 0(%r3)
86 ; CHECK: mvc 256(255,%r2), 256(%r3)
88 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 511, i32 1,
93 ; Test the last case that needs two MVCs.
94 define void @f9(i8 *%dest, i8 *%src) {
96 ; CHECK: mvc 0(256,%r2), 0(%r3)
97 ; CHECK: mvc 256(256,%r2), 256(%r3)
99 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 512, i32 1,
104 ; Test an arbitrary value that uses straight-line code.
105 define void @f10(i8 *%dest, i8 *%src) {
107 ; CHECK: mvc 0(256,%r2), 0(%r3)
108 ; CHECK: mvc 256(256,%r2), 256(%r3)
109 ; CHECK: mvc 512(256,%r2), 512(%r3)
110 ; CHECK: mvc 768(256,%r2), 768(%r3)
111 ; CHECK: mvc 1024(255,%r2), 1024(%r3)
113 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1,
118 ; ...and again in cases where not all parts are in range of MVC.
119 define void @f11(i8 *%srcbase, i8 *%destbase) {
121 ; CHECK: mvc 4000(256,%r2), 3500(%r3)
122 ; CHECK: lay [[NEWDEST:%r[1-5]]], 4256(%r2)
123 ; CHECK: mvc 0(256,[[NEWDEST]]), 3756(%r3)
124 ; CHECK: mvc 256(256,[[NEWDEST]]), 4012(%r3)
125 ; CHECK: lay [[NEWSRC:%r[1-5]]], 4268(%r3)
126 ; CHECK: mvc 512(256,[[NEWDEST]]), 0([[NEWSRC]])
127 ; CHECK: mvc 768(255,[[NEWDEST]]), 256([[NEWSRC]])
129 %dest = getelementptr i8 *%srcbase, i64 4000
130 %src = getelementptr i8* %destbase, i64 3500
131 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1,
136 ; ...and again with a destination frame base that goes out of range.
139 ; CHECK: brasl %r14, foo@PLT
140 ; CHECK: mvc 4076(256,%r15), 2100(%r15)
141 ; CHECK: lay [[NEWDEST:%r[1-5]]], 4332(%r15)
142 ; CHECK: mvc 0(256,[[NEWDEST]]), 2356(%r15)
143 ; CHECK: mvc 256(256,[[NEWDEST]]), 2612(%r15)
144 ; CHECK: mvc 512(256,[[NEWDEST]]), 2868(%r15)
145 ; CHECK: mvc 768(255,[[NEWDEST]]), 3124(%r15)
146 ; CHECK: brasl %r14, foo@PLT
148 %arr = alloca [6000 x i8]
149 %dest = getelementptr [6000 x i8] *%arr, i64 0, i64 3900
150 %src = getelementptr [6000 x i8] *%arr, i64 0, i64 1924
151 call void @foo(i8 *%dest, i8 *%src)
152 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1,
154 call void @foo(i8 *%dest, i8 *%src)
158 ; ...and again with a source frame base that goes out of range.
161 ; CHECK: brasl %r14, foo@PLT
162 ; CHECK: mvc 200(256,%r15), 3826(%r15)
163 ; CHECK: mvc 456(256,%r15), 4082(%r15)
164 ; CHECK: lay [[NEWSRC:%r[1-5]]], 4338(%r15)
165 ; CHECK: mvc 712(256,%r15), 0([[NEWSRC]])
166 ; CHECK: mvc 968(256,%r15), 256([[NEWSRC]])
167 ; CHECK: mvc 1224(255,%r15), 512([[NEWSRC]])
168 ; CHECK: brasl %r14, foo@PLT
170 %arr = alloca [6000 x i8]
171 %dest = getelementptr [6000 x i8] *%arr, i64 0, i64 24
172 %src = getelementptr [6000 x i8] *%arr, i64 0, i64 3650
173 call void @foo(i8 *%dest, i8 *%src)
174 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1,
176 call void @foo(i8 *%dest, i8 *%src)
180 ; Test the last case that is done using straight-line code.
181 define void @f14(i8 *%dest, i8 *%src) {
183 ; CHECK: mvc 0(256,%r2), 0(%r3)
184 ; CHECK: mvc 256(256,%r2), 256(%r3)
185 ; CHECK: mvc 512(256,%r2), 512(%r3)
186 ; CHECK: mvc 768(256,%r2), 768(%r3)
187 ; CHECK: mvc 1024(256,%r2), 1024(%r3)
188 ; CHECK: mvc 1280(256,%r2), 1280(%r3)
190 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1536, i32 1,
195 ; Test the first case that is done using a loop.
196 define void @f15(i8 *%dest, i8 *%src) {
198 ; CHECK: lghi [[COUNT:%r[0-5]]], 6
199 ; CHECK: [[LABEL:\.L[^:]*]]:
200 ; CHECK: pfd 2, 768(%r2)
201 ; CHECK: mvc 0(256,%r2), 0(%r3)
202 ; CHECK: la %r2, 256(%r2)
203 ; CHECK: la %r3, 256(%r3)
204 ; CHECK: brctg [[COUNT]], [[LABEL]]
205 ; CHECK: mvc 0(1,%r2), 0(%r3)
207 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1537, i32 1,
212 ; ...and again with frame bases, where the base must be loaded into a
213 ; register before the loop.
216 ; CHECK: brasl %r14, foo@PLT
217 ; CHECK-DAG: lghi [[COUNT:%r[0-5]]], 6
218 ; CHECK-DAG: la [[BASE:%r[0-5]]], 160(%r15)
219 ; CHECK: [[LABEL:\.L[^:]*]]:
220 ; CHECK: pfd 2, 2368([[BASE]])
221 ; CHECK: mvc 1600(256,[[BASE]]), 0([[BASE]])
222 ; CHECK: la [[BASE]], 256([[BASE]])
223 ; CHECK: brctg [[COUNT]], [[LABEL]]
224 ; CHECK: mvc 1600(1,[[BASE]]), 0([[BASE]])
225 ; CHECK: brasl %r14, foo@PLT
227 %arr = alloca [3200 x i8]
228 %dest = getelementptr [3200 x i8] *%arr, i64 0, i64 1600
229 %src = getelementptr [3200 x i8] *%arr, i64 0, i64 0
230 call void @foo(i8 *%dest, i8 *%src)
231 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1537, i32 1,
233 call void @foo(i8 *%dest, i8 *%src)