1; This is a copy of test/CodeGen/X86/ragreedy-hoist-spill.ll. It generates 2; sufficiently interesting differences between the default eviction heuristic 3; and the test ML policy: different eviction choices, and different reward. 4; 5; 6%struct.TMP.1 = type { %struct.TMP.2*, %struct.TMP.2*, [1024 x i8] } 7%struct.TMP.2 = type { i8*, i32, i32, i16, i16, %struct.TMP.3, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.TMP.3, %struct.TMP.4*, i32, [3 x i8], [1 x i8], %struct.TMP.3, i32, i64 } 8%struct.TMP.4 = type opaque 9%struct.TMP.3 = type { i8*, i32 } 10 11@syBuf = external global [16 x %struct.TMP.1], align 16 12@syHistory = external global [8192 x i8], align 16 13@SyFgets.yank = external global [512 x i8], align 16 14@syCTRO = external global i32, align 4 15 16define i8* @SyFgets(i8* %line, i64 %length, i64 %fid) { 17entry: 18 %sub.ptr.rhs.cast646 = ptrtoint i8* %line to i64 19 %old = alloca [512 x i8], align 16 20 %0 = getelementptr inbounds [512 x i8], [512 x i8]* %old, i64 0, i64 0 21 switch i64 %fid, label %if.then [ 22 i64 2, label %if.end 23 i64 0, label %if.end 24 ] 25 26if.then: 27 br label %cleanup 28 29if.end: 30 switch i64 undef, label %if.end25 [ 31 i64 0, label %if.then4 32 i64 1, label %if.end25 33 ] 34 35if.then4: 36 br i1 undef, label %SyTime.exit, label %if.then.i 37 38if.then.i: 39 unreachable 40 41SyTime.exit: 42 br i1 undef, label %SyTime.exit2681, label %if.then.i2673 43 44if.then.i2673: 45 unreachable 46 47SyTime.exit2681: 48 br label %cleanup 49 50land.lhs.true14: 51 unreachable 52 53if.end25: 54 br i1 undef, label %SyTime.exit2720, label %if.then.i2712 55 56if.then.i2712: 57 unreachable 58 59SyTime.exit2720: 60 %add.ptr = getelementptr [512 x i8], [512 x i8]* %old, i64 0, i64 512 61 %cmp293427 = icmp ult i8* %0, %add.ptr 62 br i1 %cmp293427, label %for.body.lr.ph, label %while.body.preheader 63 64for.body.lr.ph: 65 call void @llvm.memset.p0i8.i64(i8* align 16 undef, i8 32, i64 512, i1 false) 66 br label %while.body.preheader 67 68while.body.preheader: 69 %add.ptr1603 = getelementptr [512 x i8], [512 x i8]* null, i64 0, i64 512 70 %echo.i3101 = getelementptr [16 x %struct.TMP.1], [16 x %struct.TMP.1]* @syBuf, i64 0, i64 %fid, i32 1 71 %1 = xor i64 %sub.ptr.rhs.cast646, -1 72 br label %do.body 73 74do.body: 75 %ch2.0 = phi i32 [ 0, %while.body.preheader ], [ %ch.12.ch2.12, %do.body ] 76 %rep.0 = phi i32 [ 1, %while.body.preheader ], [ %rep.6, %do.body ] 77 store i32 0, i32* @syCTRO, align 4, !tbaa !1 78 %ch.0.ch2.0 = select i1 undef, i32 14, i32 %ch2.0 79 %ch2.2 = select i1 undef, i32 0, i32 %ch.0.ch2.0 80 %ch.2.ch2.2 = select i1 undef, i32 0, i32 %ch2.2 81 %ch2.4 = select i1 undef, i32 278, i32 %ch.2.ch2.2 82 %ch2.5 = select i1 undef, i32 0, i32 %ch2.4 83 %rep.2 = select i1 undef, i32 undef, i32 %rep.0 84 %ch.5.ch2.5 = select i1 undef, i32 undef, i32 %ch2.5 85 %ch2.7 = select i1 undef, i32 0, i32 %ch.5.ch2.5 86 %rep.3 = select i1 undef, i32 undef, i32 %rep.2 87 %ch.7.ch2.7 = select i1 false, i32 0, i32 %ch2.7 88 %mul98.rep.3 = select i1 false, i32 0, i32 %rep.3 89 %ch2.9 = select i1 undef, i32 undef, i32 %ch.7.ch2.7 90 %rep.5 = select i1 undef, i32 undef, i32 %mul98.rep.3 91 %ch2.10 = select i1 false, i32 undef, i32 %ch2.9 92 %rep.6 = select i1 false, i32 undef, i32 %rep.5 93 %isdigittmp = add i32 %ch2.10, -48 94 %isdigit = icmp ult i32 %isdigittmp, 10 95 %cmp119 = icmp eq i32 undef, 22 96 %or.cond1875 = and i1 %isdigit, %cmp119 97 %ch.10.ch2.10 = select i1 %or.cond1875, i32 undef, i32 %ch2.10 98 %.ch.10 = select i1 %or.cond1875, i32 0, i32 undef 99 %ch2.12 = select i1 undef, i32 %.ch.10, i32 %ch.10.ch2.10 100 %ch.12 = select i1 undef, i32 0, i32 %.ch.10 101 %ch.12.ch2.12 = select i1 false, i32 %ch.12, i32 %ch2.12 102 %.ch.12 = select i1 false, i32 0, i32 %ch.12 103 %cmp147 = icmp eq i32 %.ch.12, 0 104 br i1 %cmp147, label %do.body, label %do.end 105 106do.end: 107 %cmp164 = icmp eq i32 %ch.12.ch2.12, 21 108 %mul167 = shl i32 %rep.6, 2 109 %rep.8 = select i1 %cmp164, i32 %mul167, i32 %rep.6 110 %..ch.19 = select i1 false, i32 2, i32 0 111 br i1 undef, label %while.body200, label %while.end1465 112 113while.body200: 114 %dec3386.in = phi i32 [ %dec3386, %while.cond197.backedge ], [ %rep.8, %do.end ] 115 %oldc.13384 = phi i32 [ %oldc.1.be, %while.cond197.backedge ], [ 0, %do.end ] 116 %ch.213379 = phi i32 [ %last.1.be, %while.cond197.backedge ], [ %..ch.19, %do.end ] 117 %last.13371 = phi i32 [ %last.1.be, %while.cond197.backedge ], [ 0, %do.end ] 118 %dec3386 = add i32 %dec3386.in, -1 119 switch i32 %ch.213379, label %sw.default [ 120 i32 1, label %while.cond201.preheader 121 i32 322, label %sw.bb206 122 i32 354, label %sw.bb206 123 i32 2, label %sw.bb243 124 i32 364, label %sw.bb1077 125 i32 326, label %sw.bb256 126 i32 358, label %sw.bb256 127 i32 341, label %sw.bb979 128 i32 323, label %while.cond1037.preheader 129 i32 373, label %sw.bb979 130 i32 4, label %if.then1477 131 i32 332, label %sw.bb1077 132 i32 11, label %for.cond357 133 i32 355, label %while.cond1037.preheader 134 i32 324, label %sw.bb474 135 i32 356, label %sw.bb474 136 i32 20, label %sw.bb566 137 i32 -1, label %while.cond197.backedge 138 i32 268, label %sw.bb1134 139 i32 16, label %while.cond635.preheader 140 i32 18, label %sw.bb956 141 i32 316, label %while.cond864 142 ] 143 144while.cond1037.preheader: 145 %cmp10393273 = icmp eq i8 undef, 0 146 br i1 %cmp10393273, label %if.end1070, label %land.rhs1041 147 148while.cond635.preheader: 149 br i1 undef, label %for.body643.us, label %while.cond661 150 151for.body643.us: 152 br label %for.body643.us 153 154while.cond201.preheader: 155 %umax = select i1 false, i64 undef, i64 %1 156 %2 = xor i64 %umax, -1 157 %3 = inttoptr i64 %2 to i8* 158 br label %while.cond197.backedge 159 160sw.bb206: 161 br label %while.cond197.backedge 162 163sw.bb243: 164 br label %while.cond197.backedge 165 166sw.bb256: 167 br label %while.cond197.backedge 168 169while.cond197.backedge: 170 %last.1.be = phi i32 [ %ch.213379, %sw.default ], [ -1, %while.body200 ], [ %ch.213379, %sw.bb1077 ], [ %ch.213379, %sw.bb979 ], [ 18, %sw.bb956 ], [ 20, %sw.bb566 ], [ %ch.213379, %for.end552 ], [ %ch.213379, %sw.bb256 ], [ 2, %sw.bb243 ], [ 1, %while.cond201.preheader ], [ 268, %for.cond1145.preheader ], [ %ch.213379, %sw.bb206 ] 171 %oldc.1.be = phi i32 [ %oldc.13384, %sw.default ], [ %oldc.13384, %while.body200 ], [ %oldc.13384, %sw.bb1077 ], [ %oldc.13384, %sw.bb979 ], [ %oldc.13384, %sw.bb956 ], [ %oldc.13384, %sw.bb566 ], [ %oldc.13384, %for.end552 ], [ %oldc.13384, %sw.bb256 ], [ %oldc.13384, %sw.bb243 ], [ %oldc.13384, %while.cond201.preheader ], [ 0, %for.cond1145.preheader ], [ %oldc.13384, %sw.bb206 ] 172 %cmp198 = icmp sgt i32 %dec3386, 0 173 br i1 %cmp198, label %while.body200, label %while.end1465 174 175for.cond357: 176 br label %for.cond357 177 178sw.bb474: 179 ; spill is hoisted here. Although loop depth1 is even hotter than loop depth2, sw.bb474 is still cold. 180 %cmp476 = icmp eq i8 undef, 0 181 br i1 %cmp476, label %if.end517, label %do.body479.preheader 182 183do.body479.preheader: 184 %cmp4833314 = icmp eq i8 undef, 0 185 br i1 %cmp4833314, label %if.end517, label %land.rhs485 186 187land.rhs485: 188 %incdec.ptr4803316 = phi i8* [ %incdec.ptr480, %do.body479.backedge.land.rhs485_crit_edge ], [ undef, %do.body479.preheader ] 189 %isascii.i.i27763151 = icmp sgt i8 undef, -1 190 br i1 %isascii.i.i27763151, label %cond.true.i.i2780, label %cond.false.i.i2782 191 192cond.true.i.i2780: 193 br i1 undef, label %land.lhs.true490, label %lor.rhs500 194 195cond.false.i.i2782: 196 unreachable 197 198land.lhs.true490: 199 br i1 false, label %lor.rhs500, label %do.body479.backedge 200 201lor.rhs500: 202 ; Make sure spill is hoisted to a cold preheader in outside loop. 203 %call3.i.i2792 = call i32 @__maskrune(i32 undef, i64 256) 204 br i1 undef, label %land.lhs.true504, label %do.body479.backedge 205 206land.lhs.true504: 207 br i1 undef, label %do.body479.backedge, label %if.end517 208 209do.body479.backedge: 210 %incdec.ptr480 = getelementptr i8, i8* %incdec.ptr4803316, i64 1 211 %cmp483 = icmp eq i8 undef, 0 212 br i1 %cmp483, label %if.end517, label %do.body479.backedge.land.rhs485_crit_edge 213 214do.body479.backedge.land.rhs485_crit_edge: 215 br label %land.rhs485 216 217if.end517: 218 %q.4 = phi i8* [ undef, %sw.bb474 ], [ undef, %do.body479.preheader ], [ %incdec.ptr480, %do.body479.backedge ], [ %incdec.ptr4803316, %land.lhs.true504 ] 219 switch i32 %last.13371, label %if.then532 [ 220 i32 383, label %for.cond534 221 i32 356, label %for.cond534 222 i32 324, label %for.cond534 223 i32 24, label %for.cond534 224 i32 11, label %for.cond534 225 ] 226 227if.then532: 228 store i8 0, i8* getelementptr inbounds ([512 x i8], [512 x i8]* @SyFgets.yank, i64 0, i64 0), align 16, !tbaa !5 229 br label %for.cond534 230 231for.cond534: 232 %cmp536 = icmp eq i8 undef, 0 233 br i1 %cmp536, label %for.cond542.preheader, label %for.cond534 234 235for.cond542.preheader: 236 br i1 undef, label %for.body545, label %for.end552 237 238for.body545: 239 br i1 undef, label %for.end552, label %for.body545 240 241for.end552: 242 %s.2.lcssa = phi i8* [ undef, %for.cond542.preheader ], [ %q.4, %for.body545 ] 243 %sub.ptr.lhs.cast553 = ptrtoint i8* %s.2.lcssa to i64 244 %sub.ptr.sub555 = sub i64 %sub.ptr.lhs.cast553, 0 245 %arrayidx556 = getelementptr i8, i8* null, i64 %sub.ptr.sub555 246 store i8 0, i8* %arrayidx556, align 1, !tbaa !5 247 br label %while.cond197.backedge 248 249sw.bb566: 250 br label %while.cond197.backedge 251 252while.cond661: 253 br label %while.cond661 254 255while.cond864: 256 br label %while.cond864 257 258sw.bb956: 259 br i1 undef, label %if.then959, label %while.cond197.backedge 260 261if.then959: 262 br label %while.cond962 263 264while.cond962: 265 br label %while.cond962 266 267sw.bb979: 268 br label %while.cond197.backedge 269 270land.rhs1041: 271 unreachable 272 273if.end1070: 274 br label %sw.bb1077 275 276sw.bb1077: 277 br label %while.cond197.backedge 278 279sw.bb1134: 280 br i1 false, label %for.body1139, label %for.cond1145.preheader 281 282for.cond1145.preheader: 283 br i1 %cmp293427, label %for.body1150.lr.ph, label %while.cond197.backedge 284 285for.body1150.lr.ph: 286 unreachable 287 288for.body1139: 289 unreachable 290 291sw.default: 292 br label %while.cond197.backedge 293 294while.end1465: 295 %oldc.1.lcssa = phi i32 [ 0, %do.end ], [ %oldc.1.be, %while.cond197.backedge ] 296 %ch.21.lcssa = phi i32 [ %..ch.19, %do.end ], [ %last.1.be, %while.cond197.backedge ] 297 switch i32 %ch.21.lcssa, label %for.cond1480.preheader [ 298 i32 -1, label %if.then1477 299 i32 15, label %if.then1477 300 i32 13, label %if.then1477 301 i32 10, label %if.then1477 302 ] 303 304for.cond1480.preheader: 305 br i1 undef, label %for.body1606.lr.ph, label %for.end1609 306 307if.then1477: 308 %p.1.lcssa3539 = phi i8* [ null, %while.end1465 ], [ null, %while.end1465 ], [ null, %while.end1465 ], [ null, %while.end1465 ], [ %line, %while.body200 ] 309 %call1.i3057 = call i64 @"\01_write"(i32 undef, i8* undef, i64 1) 310 %sub.ptr.lhs.cast1717 = ptrtoint i8* %p.1.lcssa3539 to i64 311 %sub.ptr.sub1719 = sub i64 %sub.ptr.lhs.cast1717, %sub.ptr.rhs.cast646 312 %idx.neg1727 = sub i64 0, %sub.ptr.sub1719 313 br label %for.body1723 314 315for.body1606.lr.ph: 316 br label %for.end1609 317 318for.end1609: 319 br i1 undef, label %for.cond1659.preheader, label %land.lhs.true1614 320 321land.lhs.true1614: 322 br label %for.cond1659.preheader 323 324for.cond1659.preheader: 325 %cmp16623414 = icmp ult i8* undef, %add.ptr1603 326 br i1 %cmp16623414, label %for.body1664.lr.ph, label %while.body1703.lr.ph 327 328for.body1664.lr.ph: 329 %cmp16773405 = icmp slt i64 undef, undef 330 br i1 %cmp16773405, label %while.body1679, label %while.cond1683.preheader 331 332while.body1703.lr.ph: 333 unreachable 334 335while.cond1683.preheader: 336 br i1 undef, label %while.body1691, label %while.end1693 337 338while.body1679: 339 %oldc.43406 = phi i32 [ %inc, %syEchoch.exit3070 ], [ %oldc.1.lcssa, %for.body1664.lr.ph ] 340 %4 = load %struct.TMP.2*, %struct.TMP.2** %echo.i3101, align 8, !tbaa !6 341 %call.i3062 = call i32 @fileno(%struct.TMP.2* %4) 342 br i1 undef, label %if.then.i3069, label %syEchoch.exit3070 343 344if.then.i3069: 345 br label %syEchoch.exit3070 346 347syEchoch.exit3070: 348 %inc = add i32 %oldc.43406, 1 349 %conv1672 = sext i32 %inc to i64 350 %cmp1677 = icmp slt i64 %conv1672, undef 351 br i1 %cmp1677, label %while.body1679, label %while.cond1683.preheader 352 353while.body1691: 354 unreachable 355 356while.end1693: 357 unreachable 358 359for.body1723: 360 %q.303203 = phi i8* [ getelementptr inbounds ([8192 x i8], [8192 x i8]* @syHistory, i64 0, i64 8189), %if.then1477 ], [ %incdec.ptr1730, %for.body1723 ] 361 %add.ptr1728 = getelementptr i8, i8* %q.303203, i64 %idx.neg1727 362 %5 = load i8, i8* %add.ptr1728, align 1, !tbaa !5 363 %incdec.ptr1730 = getelementptr i8, i8* %q.303203, i64 -1 364 br label %for.body1723 365 366cleanup: 367 ret i8* undef 368} 369 370declare i32 @fileno(%struct.TMP.2* nocapture) 371declare i64 @"\01_write"(i32, i8*, i64) 372declare i32 @__maskrune(i32, i64) 373declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1) 374 375!llvm.ident = !{!0} 376 377!0 = !{!"clang version 3.5.0 (trunk 204257)"} 378!1 = !{!2, !2, i64 0} 379!2 = !{!"int", !3, i64 0} 380!3 = !{!"omnipotent char", !4, i64 0} 381!4 = !{!"Simple C/C++ TBAA"} 382!5 = !{!3, !3, i64 0} 383!6 = !{!7, !8, i64 8} 384!7 = !{!"", !8, i64 0, !8, i64 8, !3, i64 16} 385!8 = !{!"any pointer", !3, i64 0} 386