1 ; Test memcpy using MVC. 2 ; 3 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s 4 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 *) 8 9 ; Test a no-op move, i32 version. 10 define void @f1(i8 *%dest, i8 *%src) { 11 ; CHECK-LABEL: f1: 12 ; CHECK-NOT: %r2 13 ; CHECK-NOT: %r3 14 ; CHECK: br %r14 15 call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 0, i32 1, 16 i1 false) 17 ret void 18 } 19 20 ; Test a no-op move, i64 version. 21 define void @f2(i8 *%dest, i8 *%src) { 22 ; CHECK-LABEL: f2: 23 ; CHECK-NOT: %r2 24 ; CHECK-NOT: %r3 25 ; CHECK: br %r14 26 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 0, i32 1, 27 i1 false) 28 ret void 29 } 30 31 ; Test a 1-byte move, i32 version. 32 define void @f3(i8 *%dest, i8 *%src) { 33 ; CHECK-LABEL: f3: 34 ; CHECK: mvc 0(1,%r2), 0(%r3) 35 ; CHECK: br %r14 36 call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 1, i32 1, 37 i1 false) 38 ret void 39 } 40 41 ; Test a 1-byte move, i64 version. 42 define void @f4(i8 *%dest, i8 *%src) { 43 ; CHECK-LABEL: f4: 44 ; CHECK: mvc 0(1,%r2), 0(%r3) 45 ; CHECK: br %r14 46 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1, i32 1, 47 i1 false) 48 ret void 49 } 50 51 ; Test the upper range of a single MVC, i32 version. 52 define void @f5(i8 *%dest, i8 *%src) { 53 ; CHECK-LABEL: f5: 54 ; CHECK: mvc 0(256,%r2), 0(%r3) 55 ; CHECK: br %r14 56 call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 256, i32 1, 57 i1 false) 58 ret void 59 } 60 61 ; Test the upper range of a single MVC, i64 version. 62 define void @f6(i8 *%dest, i8 *%src) { 63 ; CHECK-LABEL: f6: 64 ; CHECK: mvc 0(256,%r2), 0(%r3) 65 ; CHECK: br %r14 66 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 256, i32 1, 67 i1 false) 68 ret void 69 } 70 71 ; Test the first case that needs two MVCs. 72 define void @f7(i8 *%dest, i8 *%src) { 73 ; CHECK-LABEL: f7: 74 ; CHECK: mvc 0(256,%r2), 0(%r3) 75 ; CHECK: mvc 256(1,%r2), 256(%r3) 76 ; CHECK: br %r14 77 call void @llvm.memcpy.p0i8.p0i8.i32(i8 *%dest, i8 *%src, i32 257, i32 1, 78 i1 false) 79 ret void 80 } 81 82 ; Test the last-but-one case that needs two MVCs. 83 define void @f8(i8 *%dest, i8 *%src) { 84 ; CHECK-LABEL: f8: 85 ; CHECK: mvc 0(256,%r2), 0(%r3) 86 ; CHECK: mvc 256(255,%r2), 256(%r3) 87 ; CHECK: br %r14 88 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 511, i32 1, 89 i1 false) 90 ret void 91 } 92 93 ; Test the last case that needs two MVCs. 94 define void @f9(i8 *%dest, i8 *%src) { 95 ; CHECK-LABEL: f9: 96 ; CHECK: mvc 0(256,%r2), 0(%r3) 97 ; CHECK: mvc 256(256,%r2), 256(%r3) 98 ; CHECK: br %r14 99 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 512, i32 1, 100 i1 false) 101 ret void 102 } 103 104 ; Test an arbitrary value that uses straight-line code. 105 define void @f10(i8 *%dest, i8 *%src) { 106 ; CHECK-LABEL: f10: 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) 112 ; CHECK: br %r14 113 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1, 114 i1 false) 115 ret void 116 } 117 118 ; ...and again in cases where not all parts are in range of MVC. 119 define void @f11(i8 *%srcbase, i8 *%destbase) { 120 ; CHECK-LABEL: f11: 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]]) 128 ; CHECK: br %r14 129 %dest = getelementptr i8, i8 *%srcbase, i64 4000 130 %src = getelementptr i8, i8* %destbase, i64 3500 131 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1279, i32 1, 132 i1 false) 133 ret void 134 } 135 136 ; ...and again with a destination frame base that goes out of range. 137 define void @f12() { 138 ; CHECK-LABEL: f12: 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 147 ; CHECK: br %r14 148 %arr = alloca [6000 x i8] 149 %dest = getelementptr [6000 x i8], [6000 x i8] *%arr, i64 0, i64 3900 150 %src = getelementptr [6000 x i8], [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, 153 i1 false) 154 call void @foo(i8 *%dest, i8 *%src) 155 ret void 156 } 157 158 ; ...and again with a source frame base that goes out of range. 159 define void @f13() { 160 ; CHECK-LABEL: f13: 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 169 ; CHECK: br %r14 170 %arr = alloca [6000 x i8] 171 %dest = getelementptr [6000 x i8], [6000 x i8] *%arr, i64 0, i64 24 172 %src = getelementptr [6000 x i8], [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, 175 i1 false) 176 call void @foo(i8 *%dest, i8 *%src) 177 ret void 178 } 179 180 ; Test the last case that is done using straight-line code. 181 define void @f14(i8 *%dest, i8 *%src) { 182 ; CHECK-LABEL: f14: 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) 189 ; CHECK: br %r14 190 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1536, i32 1, 191 i1 false) 192 ret void 193 } 194 195 ; Test the first case that is done using a loop. 196 define void @f15(i8 *%dest, i8 *%src) { 197 ; CHECK-LABEL: f15: 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) 206 ; CHECK: br %r14 207 call void @llvm.memcpy.p0i8.p0i8.i64(i8 *%dest, i8 *%src, i64 1537, i32 1, 208 i1 false) 209 ret void 210 } 211 212 ; ...and again with frame bases, where the base must be loaded into a 213 ; register before the loop. 214 define void @f16() { 215 ; CHECK-LABEL: f16: 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 226 ; CHECK: br %r14 227 %arr = alloca [3200 x i8] 228 %dest = getelementptr [3200 x i8], [3200 x i8] *%arr, i64 0, i64 1600 229 %src = getelementptr [3200 x i8], [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, 232 i1 false) 233 call void @foo(i8 *%dest, i8 *%src) 234 ret void 235 } 236
