1; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 | FileCheck %s 2; 3; Note: Print verbose stackmaps using -debug-only=stackmaps. 4 5; CHECK-LABEL: .section __LLVM_STACKMAPS,__llvm_stackmaps 6; CHECK-NEXT: __LLVM_StackMaps: 7; Header 8; CHECK-NEXT: .byte 3 9; CHECK-NEXT: .byte 0 10; CHECK-NEXT: .short 0 11; Num Functions 12; CHECK-NEXT: .long 16 13; Num LargeConstants 14; CHECK-NEXT: .long 3 15; Num Callsites 16; CHECK-NEXT: .long 20 17 18; Functions and stack size 19; CHECK-NEXT: .quad _constantargs 20; CHECK-NEXT: .quad 8 21; CHECK-NEXT: .quad 1 22; CHECK-NEXT: .quad _osrinline 23; CHECK-NEXT: .quad 24 24; CHECK-NEXT: .quad 1 25; CHECK-NEXT: .quad _osrcold 26; CHECK-NEXT: .quad 8 27; CHECK-NEXT: .quad 1 28; CHECK-NEXT: .quad _propertyRead 29; CHECK-NEXT: .quad 8 30; CHECK-NEXT: .quad 1 31; CHECK-NEXT: .quad _propertyWrite 32; CHECK-NEXT: .quad 8 33; CHECK-NEXT: .quad 1 34; CHECK-NEXT: .quad _jsVoidCall 35; CHECK-NEXT: .quad 8 36; CHECK-NEXT: .quad 1 37; CHECK-NEXT: .quad _jsIntCall 38; CHECK-NEXT: .quad 8 39; CHECK-NEXT: .quad 1 40; CHECK-NEXT: .quad _spilledValue 41; CHECK-NEXT: .quad 8 42; CHECK-NEXT: .quad 1 43; CHECK-NEXT: .quad _spilledStackMapValue 44; CHECK-NEXT: .quad 8 45; CHECK-NEXT: .quad 1 46; CHECK-NEXT: .quad _spillSubReg 47; CHECK-NEXT: .quad 56 48; CHECK-NEXT: .quad 1 49; CHECK-NEXT: .quad _subRegOffset 50; CHECK-NEXT: .quad 56 51; CHECK-NEXT: .quad 1 52; CHECK-NEXT: .quad _liveConstant 53; CHECK-NEXT: .quad 8 54; CHECK-NEXT: .quad 1 55; CHECK-NEXT: .quad _directFrameIdx 56; CHECK-NEXT: .quad 56 57; CHECK-NEXT: .quad 2 58; CHECK-NEXT: .quad _longid 59; CHECK-NEXT: .quad 8 60; CHECK-NEXT: .quad 4 61; CHECK-NEXT: .quad _clobberScratch 62; CHECK-NEXT: .quad 56 63; CHECK-NEXT: .quad 1 64; CHECK-NEXT: .quad _needsStackRealignment 65; CHECK-NEXT: .quad -1 66; CHECK-NEXT: .quad 1 67 68; Large Constants 69; CHECK-NEXT: .quad 2147483648 70; CHECK-NEXT: .quad 4294967295 71; CHECK-NEXT: .quad 4294967296 72 73; Callsites 74; Constant arguments 75; 76; CHECK-NEXT: .quad 1 77; CHECK-NEXT: .long L{{.*}}-_constantargs 78; CHECK-NEXT: .short 0 79; CHECK-NEXT: .short 12 80; SmallConstant 81; CHECK-NEXT: .byte 4 82; CHECK-NEXT: .byte 0 83; CHECK-NEXT: .short 8 84; CHECK-NEXT: .short 0 85; CHECK-NEXT: .short 0 86; CHECK-NEXT: .long -1 87; SmallConstant 88; CHECK-NEXT: .byte 4 89; CHECK-NEXT: .byte 0 90; CHECK-NEXT: .short 8 91; CHECK-NEXT: .short 0 92; CHECK-NEXT: .short 0 93; CHECK-NEXT: .long -1 94; SmallConstant 95; CHECK-NEXT: .byte 4 96; CHECK-NEXT: .byte 0 97; CHECK-NEXT: .short 8 98; CHECK-NEXT: .short 0 99; CHECK-NEXT: .short 0 100; CHECK-NEXT: .long 65536 101; SmallConstant 102; CHECK-NEXT: .byte 4 103; CHECK-NEXT: .byte 0 104; CHECK-NEXT: .short 8 105; CHECK-NEXT: .short 0 106; CHECK-NEXT: .short 0 107; CHECK-NEXT: .long 2000000000 108; SmallConstant 109; CHECK-NEXT: .byte 4 110; CHECK-NEXT: .byte 0 111; CHECK-NEXT: .short 8 112; CHECK-NEXT: .short 0 113; CHECK-NEXT: .short 0 114; CHECK-NEXT: .long 2147483647 115; SmallConstant 116; CHECK-NEXT: .byte 4 117; CHECK-NEXT: .byte 0 118; CHECK-NEXT: .short 8 119; CHECK-NEXT: .short 0 120; CHECK-NEXT: .short 0 121; CHECK-NEXT: .long -1 122; SmallConstant 123; CHECK-NEXT: .byte 4 124; CHECK-NEXT: .byte 0 125; CHECK-NEXT: .short 8 126; CHECK-NEXT: .short 0 127; CHECK-NEXT: .short 0 128; CHECK-NEXT: .long -1 129; SmallConstant 130; CHECK-NEXT: .byte 4 131; CHECK-NEXT: .byte 0 132; CHECK-NEXT: .short 8 133; CHECK-NEXT: .short 0 134; CHECK-NEXT: .short 0 135; CHECK-NEXT: .long 0 136; LargeConstant at index 0 137; CHECK-NEXT: .byte 5 138; CHECK-NEXT: .byte 0 139; CHECK-NEXT: .short 8 140; CHECK-NEXT: .short 0 141; CHECK-NEXT: .short 0 142; CHECK-NEXT: .long 0 143; LargeConstant at index 1 144; CHECK-NEXT: .byte 5 145; CHECK-NEXT: .byte 0 146; CHECK-NEXT: .short 8 147; CHECK-NEXT: .short 0 148; CHECK-NEXT: .short 0 149; CHECK-NEXT: .long 1 150; LargeConstant at index 2 151; CHECK-NEXT: .byte 5 152; CHECK-NEXT: .byte 0 153; CHECK-NEXT: .short 8 154; CHECK-NEXT: .short 0 155; CHECK-NEXT: .short 0 156; CHECK-NEXT: .long 2 157; SmallConstant 158; CHECK-NEXT: .byte 4 159; CHECK-NEXT: .byte 0 160; CHECK-NEXT: .short 8 161; CHECK-NEXT: .short 0 162; CHECK-NEXT: .short 0 163; CHECK-NEXT: .long -1 164 165define void @constantargs() { 166entry: 167 %0 = inttoptr i64 12345 to i8* 168 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 1, i32 15, i8* %0, i32 0, i16 65535, i16 -1, i32 65536, i32 2000000000, i32 2147483647, i32 -1, i32 4294967295, i32 4294967296, i64 2147483648, i64 4294967295, i64 4294967296, i64 -1) 169 ret void 170} 171 172; Inline OSR Exit 173; 174; CHECK-LABEL: .long L{{.*}}-_osrinline 175; CHECK-NEXT: .short 0 176; CHECK-NEXT: .short 2 177; CHECK-NEXT: .byte 1 178; CHECK-NEXT: .byte 0 179; CHECK-NEXT: .short 8 180; CHECK-NEXT: .short {{[0-9]+}} 181; CHECK-NEXT: .short 0 182; CHECK-NEXT: .long 0 183; CHECK-NEXT: .byte 1 184; CHECK-NEXT: .byte 0 185; CHECK-NEXT: .short 8 186; CHECK-NEXT: .short {{[0-9]+}} 187; CHECK-NEXT: .short 0 188; CHECK-NEXT: .long 0 189define void @osrinline(i64 %a, i64 %b) { 190entry: 191 ; Runtime void->void call. 192 call void inttoptr (i64 -559038737 to void ()*)() 193 ; Followed by inline OSR patchpoint with 12-byte shadow and 2 live vars. 194 call void (i64, i32, ...) @llvm.experimental.stackmap(i64 3, i32 12, i64 %a, i64 %b) 195 ret void 196} 197 198; Cold OSR Exit 199; 200; 2 live variables in register. 201; 202; CHECK-LABEL: .long L{{.*}}-_osrcold 203; CHECK-NEXT: .short 0 204; CHECK-NEXT: .short 2 205; CHECK-NEXT: .byte 1 206; CHECK-NEXT: .byte 0 207; CHECK-NEXT: .short 8 208; CHECK-NEXT: .short {{[0-9]+}} 209; CHECK-NEXT: .short 0 210; CHECK-NEXT: .long 0 211; CHECK-NEXT: .byte 1 212; CHECK-NEXT: .byte 0 213; CHECK-NEXT: .short 8 214; CHECK-NEXT: .short {{[0-9]+}} 215; CHECK-NEXT: .short 0 216; CHECK-NEXT: .long 0 217define void @osrcold(i64 %a, i64 %b) { 218entry: 219 %test = icmp slt i64 %a, %b 220 br i1 %test, label %ret, label %cold 221cold: 222 ; OSR patchpoint with 12-byte nop-slide and 2 live vars. 223 %thunk = inttoptr i64 -559038737 to i8* 224 call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 4, i32 15, i8* %thunk, i32 0, i64 %a, i64 %b) 225 unreachable 226ret: 227 ret void 228} 229 230; Property Read 231; CHECK-LABEL: .long L{{.*}}-_propertyRead 232; CHECK-NEXT: .short 0 233; CHECK-NEXT: .short 2 234; CHECK-NEXT: .byte 1 235; CHECK-NEXT: .byte 0 236; CHECK-NEXT: .short 8 237; CHECK-NEXT: .short {{[0-9]+}} 238; CHECK-NEXT: .short 0 239; CHECK-NEXT: .long 0 240; CHECK-NEXT: .byte 1 241; CHECK-NEXT: .byte 0 242; CHECK-NEXT: .short 8 243; CHECK-NEXT: .short {{[0-9]+}} 244; CHECK-NEXT: .short 0 245; CHECK-NEXT: .long 0 246define i64 @propertyRead(i64* %obj) { 247entry: 248 %resolveRead = inttoptr i64 -559038737 to i8* 249 %result = call anyregcc i64 (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.i64(i64 5, i32 15, i8* %resolveRead, i32 1, i64* %obj) 250 %add = add i64 %result, 3 251 ret i64 %add 252} 253 254; Property Write 255; CHECK-LABEL: .long L{{.*}}-_propertyWrite 256; CHECK-NEXT: .short 0 257; CHECK-NEXT: .short 2 258; CHECK-NEXT: .byte 1 259; CHECK-NEXT: .byte 0 260; CHECK-NEXT: .short 8 261; CHECK-NEXT: .short {{[0-9]+}} 262; CHECK-NEXT: .short 0 263; CHECK-NEXT: .long 0 264; CHECK-NEXT: .byte 1 265; CHECK-NEXT: .byte 0 266; CHECK-NEXT: .short 8 267; CHECK-NEXT: .short {{[0-9]+}} 268; CHECK-NEXT: .short 0 269; CHECK-NEXT: .long 0 270define void @propertyWrite(i64 %dummy1, i64* %obj, i64 %dummy2, i64 %a) { 271entry: 272 %resolveWrite = inttoptr i64 -559038737 to i8* 273 call anyregcc void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 6, i32 15, i8* %resolveWrite, i32 2, i64* %obj, i64 %a) 274 ret void 275} 276 277; Void JS Call 278; 279; 2 live variables in registers. 280; 281; CHECK-LABEL: .long L{{.*}}-_jsVoidCall 282; CHECK-NEXT: .short 0 283; CHECK-NEXT: .short 2 284; CHECK-NEXT: .byte 1 285; CHECK-NEXT: .byte 0 286; CHECK-NEXT: .short 8 287; CHECK-NEXT: .short {{[0-9]+}} 288; CHECK-NEXT: .short 0 289; CHECK-NEXT: .long 0 290; CHECK-NEXT: .byte 1 291; CHECK-NEXT: .byte 0 292; CHECK-NEXT: .short 8 293; CHECK-NEXT: .short {{[0-9]+}} 294; CHECK-NEXT: .short 0 295; CHECK-NEXT: .long 0 296define void @jsVoidCall(i64 %dummy1, i64* %obj, i64 %arg, i64 %l1, i64 %l2) { 297entry: 298 %resolveCall = inttoptr i64 -559038737 to i8* 299 call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 7, i32 15, i8* %resolveCall, i32 2, i64* %obj, i64 %arg, i64 %l1, i64 %l2) 300 ret void 301} 302 303; i64 JS Call 304; 305; 2 live variables in registers. 306; 307; CHECK-LABEL: .long L{{.*}}-_jsIntCall 308; CHECK-NEXT: .short 0 309; CHECK-NEXT: .short 2 310; CHECK-NEXT: .byte 1 311; CHECK-NEXT: .byte 0 312; CHECK-NEXT: .short 8 313; CHECK-NEXT: .short {{[0-9]+}} 314; CHECK-NEXT: .short 0 315; CHECK-NEXT: .long 0 316; CHECK-NEXT: .byte 1 317; CHECK-NEXT: .byte 0 318; CHECK-NEXT: .short 8 319; CHECK-NEXT: .short {{[0-9]+}} 320; CHECK-NEXT: .short 0 321; CHECK-NEXT: .long 0 322define i64 @jsIntCall(i64 %dummy1, i64* %obj, i64 %arg, i64 %l1, i64 %l2) { 323entry: 324 %resolveCall = inttoptr i64 -559038737 to i8* 325 %result = call i64 (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.i64(i64 8, i32 15, i8* %resolveCall, i32 2, i64* %obj, i64 %arg, i64 %l1, i64 %l2) 326 %add = add i64 %result, 3 327 ret i64 %add 328} 329 330; Spilled stack map values. 331; 332; Verify 17 stack map entries. 333; 334; CHECK-LABEL: .long L{{.*}}-_spilledValue 335; CHECK-NEXT: .short 0 336; CHECK-NEXT: .short 17 337; 338; Check that at least one is a spilled entry from RBP. 339; Location: Indirect RBP + ... 340; CHECK: .byte 3 341; CHECK-NEXT: .byte 0 342; CHECK-NEXT: .short 8 343; CHECK-NEXT: .short 6 344; CHECK-NEXT: .short 0 345; CHECK-NEXT: .long 346define void @spilledValue(i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3, i64 %arg4, i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9, i64 %l10, i64 %l11, i64 %l12, i64 %l13, i64 %l14, i64 %l15, i64 %l16) { 347entry: 348 call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 11, i32 15, i8* null, i32 5, i64 %arg0, i64 %arg1, i64 %arg2, i64 %arg3, i64 %arg4, i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9, i64 %l10, i64 %l11, i64 %l12, i64 %l13, i64 %l14, i64 %l15, i64 %l16) 349 ret void 350} 351 352; Spilled stack map values. 353; 354; Verify 17 stack map entries. 355; 356; CHECK-LABEL: .long L{{.*}}-_spilledStackMapValue 357; CHECK-NEXT: .short 0 358; CHECK-NEXT: .short 17 359; 360; Check that at least one is a spilled entry from RBP. 361; Location: Indirect RBP + ... 362; CHECK: .byte 3 363; CHECK-NEXT: .byte 0 364; CHECK-NEXT: .short 8 365; CHECK-NEXT: .short 6 366; CHECK-NEXT: .short 0 367; CHECK-NEXT: .long 368define webkit_jscc void @spilledStackMapValue(i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9, i64 %l10, i64 %l11, i64 %l12, i64 %l13, i64 %l14, i64 %l15, i64 %l16) { 369entry: 370 call void (i64, i32, ...) @llvm.experimental.stackmap(i64 12, i32 15, i64 %l0, i64 %l1, i64 %l2, i64 %l3, i64 %l4, i64 %l5, i64 %l6, i64 %l7, i64 %l8, i64 %l9, i64 %l10, i64 %l11, i64 %l12, i64 %l13, i64 %l14, i64 %l15, i64 %l16) 371 ret void 372} 373 374; Spill a subregister stackmap operand. 375; 376; CHECK-LABEL: .long L{{.*}}-_spillSubReg 377; CHECK-NEXT: .short 0 378; 4 locations 379; CHECK-NEXT: .short 1 380; 381; Check that the subregister operand is a 4-byte spill. 382; Location: Indirect, 4-byte, RBP + ... 383; CHECK: .byte 3 384; CHECK-NEXT: .byte 0 385; CHECK-NEXT: .short 4 386; CHECK-NEXT: .short 6 387; CHECK-NEXT: .short 0 388; CHECK-NEXT: .long 389define void @spillSubReg(i64 %arg) #0 { 390bb: 391 br i1 undef, label %bb1, label %bb2 392 393bb1: 394 unreachable 395 396bb2: 397 %tmp = load i64, i64* inttoptr (i64 140685446136880 to i64*) 398 br i1 undef, label %bb16, label %bb17 399 400bb16: 401 unreachable 402 403bb17: 404 %tmp32 = trunc i64 %tmp to i32 405 br i1 undef, label %bb60, label %bb61 406 407bb60: 408 tail call void asm sideeffect "nop", "~{ax},~{bx},~{cx},~{dx},~{bp},~{si},~{di},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"() nounwind 409 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 13, i32 5, i32 %tmp32) 410 unreachable 411 412bb61: 413 unreachable 414} 415 416; Map a single byte subregister. There is no DWARF register number, so 417; we expect the register to be encoded with the proper size and spill offset. We don't know which 418; 419; CHECK-LABEL: .long L{{.*}}-_subRegOffset 420; CHECK-NEXT: .short 0 421; 2 locations 422; CHECK-NEXT: .short 2 423; 424; Check that the subregister operands are 1-byte spills. 425; Location 0: Register, 4-byte, AL 426; CHECK-NEXT: .byte 1 427; CHECK-NEXT: .byte 0 428; CHECK-NEXT: .short 1 429; CHECK-NEXT: .short 0 430; CHECK-NEXT: .short 0 431; CHECK-NEXT: .long 0 432; 433; Location 1: Register, 4-byte, BL 434; CHECK-NEXT: .byte 1 435; CHECK-NEXT: .byte 0 436; CHECK-NEXT: .short 1 437; CHECK-NEXT: .short 3 438; CHECK-NEXT: .short 0 439; CHECK-NEXT: .long 0 440define void @subRegOffset(i16 %arg) { 441 %v = mul i16 %arg, 5 442 %a0 = trunc i16 %v to i8 443 tail call void asm sideeffect "nop", "~{bx}"() nounwind 444 %arghi = lshr i16 %v, 8 445 %a1 = trunc i16 %arghi to i8 446 tail call void asm sideeffect "nop", "~{cx},~{dx},~{bp},~{si},~{di},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"() nounwind 447 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 14, i32 5, i8 %a0, i8 %a1) 448 ret void 449} 450 451; Map a constant value. 452; 453; CHECK-LABEL: .long L{{.*}}-_liveConstant 454; CHECK-NEXT: .short 0 455; 1 location 456; CHECK-NEXT: .short 1 457; Loc 0: SmallConstant 458; CHECK-NEXT: .byte 4 459; CHECK-NEXT: .byte 0 460; CHECK-NEXT: .short 8 461; CHECK-NEXT: .short 0 462; CHECK-NEXT: .short 0 463; CHECK-NEXT: .long 33 464 465define void @liveConstant() { 466 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 15, i32 5, i32 33) 467 ret void 468} 469 470; Directly map an alloca's address. 471; 472; Callsite 16 473; CHECK-LABEL: .long L{{.*}}-_directFrameIdx 474; CHECK-NEXT: .short 0 475; 1 location 476; CHECK-NEXT: .short 1 477; Loc 0: Direct RBP - ofs 478; CHECK-NEXT: .byte 2 479; CHECK-NEXT: .byte 0 480; CHECK-NEXT: .short 8 481; CHECK-NEXT: .short 6 482; CHECK-NEXT: .short 0 483; CHECK-NEXT: .long 484 485; Callsite 17 486; CHECK-LABEL: .long L{{.*}}-_directFrameIdx 487; CHECK-NEXT: .short 0 488; 2 locations 489; CHECK-NEXT: .short 2 490; Loc 0: Direct RBP - ofs 491; CHECK-NEXT: .byte 2 492; CHECK-NEXT: .byte 0 493; CHECK-NEXT: .short 8 494; CHECK-NEXT: .short 6 495; CHECK-NEXT: .short 0 496; CHECK-NEXT: .long 497; Loc 1: Direct RBP - ofs 498; CHECK-NEXT: .byte 2 499; CHECK-NEXT: .byte 0 500; CHECK-NEXT: .short 8 501; CHECK-NEXT: .short 6 502; CHECK-NEXT: .short 0 503; CHECK-NEXT: .long 504define void @directFrameIdx() { 505entry: 506 %metadata1 = alloca i64, i32 3, align 8 507 store i64 11, i64* %metadata1 508 store i64 12, i64* %metadata1 509 store i64 13, i64* %metadata1 510 call void (i64, i32, ...) @llvm.experimental.stackmap(i64 16, i32 0, i64* %metadata1) 511 %metadata2 = alloca i8, i32 4, align 8 512 %metadata3 = alloca i16, i32 4, align 8 513 call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 17, i32 5, i8* null, i32 0, i8* %metadata2, i16* %metadata3) 514 ret void 515} 516 517; Test a 64-bit ID. 518; 519; CHECK: .quad 4294967295 520; CHECK-LABEL: .long L{{.*}}-_longid 521; CHECK: .quad 4294967296 522; CHECK-LABEL: .long L{{.*}}-_longid 523; CHECK: .quad 9223372036854775807 524; CHECK-LABEL: .long L{{.*}}-_longid 525; CHECK: .quad -1 526; CHECK-LABEL: .long L{{.*}}-_longid 527define void @longid() { 528entry: 529 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 4294967295, i32 0, i8* null, i32 0) 530 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 4294967296, i32 0, i8* null, i32 0) 531 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 9223372036854775807, i32 0, i8* null, i32 0) 532 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 -1, i32 0, i8* null, i32 0) 533 ret void 534} 535 536; Map a value when R11 is the only free register. 537; The scratch register should not be used for a live stackmap value. 538; 539; CHECK-LABEL: .long L{{.*}}-_clobberScratch 540; CHECK-NEXT: .short 0 541; 1 location 542; CHECK-NEXT: .short 1 543; Loc 0: Indirect fp - offset 544; CHECK-NEXT: .byte 3 545; CHECK-NEXT: .byte 0 546; CHECK-NEXT: .short 4 547; CHECK-NEXT: .short 6 548; CHECK-NEXT: .short 0 549; CHECK-NEXT: .long -{{[0-9]+}} 550define void @clobberScratch(i32 %a) { 551 tail call void asm sideeffect "nop", "~{ax},~{bx},~{cx},~{dx},~{bp},~{si},~{di},~{r8},~{r9},~{r10},~{r12},~{r13},~{r14},~{r15}"() nounwind 552 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 16, i32 8, i32 %a) 553 ret void 554} 555 556; A stack frame which needs to be realigned at runtime (to meet alignment 557; criteria for values on the stack) does not have a fixed frame size. 558; CHECK-LABEL: .long L{{.*}}-_needsStackRealignment 559; CHECK-NEXT: .short 0 560; 0 locations 561; CHECK-NEXT: .short 0 562define void @needsStackRealignment() { 563 %val = alloca i64, i32 3, align 128 564 tail call void (...) @escape_values(i64* %val) 565; Note: Adding any non-constant to the stackmap would fail because we 566; expected to be able to address off the frame pointer. In a realigned 567; frame, we must use the stack pointer instead. This is a separate bug. 568 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 0, i32 0) 569 ret void 570} 571declare void @escape_values(...) 572 573declare void @llvm.experimental.stackmap(i64, i32, ...) 574declare void @llvm.experimental.patchpoint.void(i64, i32, i8*, i32, ...) 575declare i64 @llvm.experimental.patchpoint.i64(i64, i32, i8*, i32, ...) 576