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 4 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; CHECK-NEXT: .quad 4294967297 73 74; Callsites 75; Constant arguments 76; 77; CHECK-NEXT: .quad 1 78; CHECK-NEXT: .long L{{.*}}-_constantargs 79; CHECK-NEXT: .short 0 80; CHECK-NEXT: .short 14 81; SmallConstant 82; CHECK-NEXT: .byte 4 83; CHECK-NEXT: .byte 0 84; CHECK-NEXT: .short 8 85; CHECK-NEXT: .short 0 86; CHECK-NEXT: .short 0 87; CHECK-NEXT: .long -1 88; SmallConstant 89; CHECK-NEXT: .byte 4 90; CHECK-NEXT: .byte 0 91; CHECK-NEXT: .short 8 92; CHECK-NEXT: .short 0 93; CHECK-NEXT: .short 0 94; CHECK-NEXT: .long -1 95; SmallConstant 96; CHECK-NEXT: .byte 4 97; CHECK-NEXT: .byte 0 98; CHECK-NEXT: .short 8 99; CHECK-NEXT: .short 0 100; CHECK-NEXT: .short 0 101; CHECK-NEXT: .long 65536 102; SmallConstant 103; CHECK-NEXT: .byte 4 104; CHECK-NEXT: .byte 0 105; CHECK-NEXT: .short 8 106; CHECK-NEXT: .short 0 107; CHECK-NEXT: .short 0 108; CHECK-NEXT: .long 2000000000 109; SmallConstant 110; CHECK-NEXT: .byte 4 111; CHECK-NEXT: .byte 0 112; CHECK-NEXT: .short 8 113; CHECK-NEXT: .short 0 114; CHECK-NEXT: .short 0 115; CHECK-NEXT: .long 2147483647 116; SmallConstant 117; CHECK-NEXT: .byte 4 118; CHECK-NEXT: .byte 0 119; CHECK-NEXT: .short 8 120; CHECK-NEXT: .short 0 121; CHECK-NEXT: .short 0 122; CHECK-NEXT: .long -1 123; SmallConstant 124; CHECK-NEXT: .byte 4 125; CHECK-NEXT: .byte 0 126; CHECK-NEXT: .short 8 127; CHECK-NEXT: .short 0 128; CHECK-NEXT: .short 0 129; CHECK-NEXT: .long -1 130; SmallConstant 131; CHECK-NEXT: .byte 4 132; CHECK-NEXT: .byte 0 133; CHECK-NEXT: .short 8 134; CHECK-NEXT: .short 0 135; CHECK-NEXT: .short 0 136; CHECK-NEXT: .long 0 137; LargeConstant at index 0 138; CHECK-NEXT: .byte 5 139; CHECK-NEXT: .byte 0 140; CHECK-NEXT: .short 8 141; CHECK-NEXT: .short 0 142; CHECK-NEXT: .short 0 143; CHECK-NEXT: .long 0 144; LargeConstant at index 1 145; CHECK-NEXT: .byte 5 146; CHECK-NEXT: .byte 0 147; CHECK-NEXT: .short 8 148; CHECK-NEXT: .short 0 149; CHECK-NEXT: .short 0 150; CHECK-NEXT: .long 1 151; LargeConstant at index 2 152; CHECK-NEXT: .byte 5 153; CHECK-NEXT: .byte 0 154; CHECK-NEXT: .short 8 155; CHECK-NEXT: .short 0 156; CHECK-NEXT: .short 0 157; CHECK-NEXT: .long 2 158; SmallConstant 159; CHECK-NEXT: .byte 4 160; CHECK-NEXT: .byte 0 161; CHECK-NEXT: .short 8 162; CHECK-NEXT: .short 0 163; CHECK-NEXT: .short 0 164; CHECK-NEXT: .long -1 165; SmallConstant 166; CHECK-NEXT: .byte 4 167; CHECK-NEXT: .byte 0 168; CHECK-NEXT: .short 8 169; CHECK-NEXT: .short 0 170; CHECK-NEXT: .short 0 171; CHECK-NEXT: .long 66 172; LargeConstant at index 3 173; CHECK-NEXT: .byte 5 174; CHECK-NEXT: .byte 0 175; CHECK-NEXT: .short 8 176; CHECK-NEXT: .short 0 177; CHECK-NEXT: .short 0 178; CHECK-NEXT: .long 3 179 180define void @constantargs() { 181entry: 182 %0 = inttoptr i64 12345 to i8* 183 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, i128 66, i128 4294967297) 184 ret void 185} 186 187; Inline OSR Exit 188; 189; CHECK-LABEL: .long L{{.*}}-_osrinline 190; CHECK-NEXT: .short 0 191; CHECK-NEXT: .short 2 192; CHECK-NEXT: .byte 1 193; CHECK-NEXT: .byte 0 194; CHECK-NEXT: .short 8 195; CHECK-NEXT: .short {{[0-9]+}} 196; CHECK-NEXT: .short 0 197; CHECK-NEXT: .long 0 198; CHECK-NEXT: .byte 1 199; CHECK-NEXT: .byte 0 200; CHECK-NEXT: .short 8 201; CHECK-NEXT: .short {{[0-9]+}} 202; CHECK-NEXT: .short 0 203; CHECK-NEXT: .long 0 204define void @osrinline(i64 %a, i64 %b) { 205entry: 206 ; Runtime void->void call. 207 call void inttoptr (i64 -559038737 to void ()*)() 208 ; Followed by inline OSR patchpoint with 12-byte shadow and 2 live vars. 209 call void (i64, i32, ...) @llvm.experimental.stackmap(i64 3, i32 12, i64 %a, i64 %b) 210 ret void 211} 212 213; Cold OSR Exit 214; 215; 2 live variables in register. 216; 217; CHECK-LABEL: .long L{{.*}}-_osrcold 218; CHECK-NEXT: .short 0 219; CHECK-NEXT: .short 2 220; CHECK-NEXT: .byte 1 221; CHECK-NEXT: .byte 0 222; CHECK-NEXT: .short 8 223; CHECK-NEXT: .short {{[0-9]+}} 224; CHECK-NEXT: .short 0 225; CHECK-NEXT: .long 0 226; CHECK-NEXT: .byte 1 227; CHECK-NEXT: .byte 0 228; CHECK-NEXT: .short 8 229; CHECK-NEXT: .short {{[0-9]+}} 230; CHECK-NEXT: .short 0 231; CHECK-NEXT: .long 0 232define void @osrcold(i64 %a, i64 %b) { 233entry: 234 %test = icmp slt i64 %a, %b 235 br i1 %test, label %ret, label %cold 236cold: 237 ; OSR patchpoint with 12-byte nop-slide and 2 live vars. 238 %thunk = inttoptr i64 -559038737 to i8* 239 call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 4, i32 15, i8* %thunk, i32 0, i64 %a, i64 %b) 240 unreachable 241ret: 242 ret void 243} 244 245; Property Read 246; CHECK-LABEL: .long L{{.*}}-_propertyRead 247; CHECK-NEXT: .short 0 248; CHECK-NEXT: .short 2 249; CHECK-NEXT: .byte 1 250; CHECK-NEXT: .byte 0 251; CHECK-NEXT: .short 8 252; CHECK-NEXT: .short {{[0-9]+}} 253; CHECK-NEXT: .short 0 254; CHECK-NEXT: .long 0 255; CHECK-NEXT: .byte 1 256; CHECK-NEXT: .byte 0 257; CHECK-NEXT: .short 8 258; CHECK-NEXT: .short {{[0-9]+}} 259; CHECK-NEXT: .short 0 260; CHECK-NEXT: .long 0 261define i64 @propertyRead(i64* %obj) { 262entry: 263 %resolveRead = inttoptr i64 -559038737 to i8* 264 %result = call anyregcc i64 (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.i64(i64 5, i32 15, i8* %resolveRead, i32 1, i64* %obj) 265 %add = add i64 %result, 3 266 ret i64 %add 267} 268 269; Property Write 270; CHECK-LABEL: .long L{{.*}}-_propertyWrite 271; CHECK-NEXT: .short 0 272; CHECK-NEXT: .short 2 273; CHECK-NEXT: .byte 1 274; CHECK-NEXT: .byte 0 275; CHECK-NEXT: .short 8 276; CHECK-NEXT: .short {{[0-9]+}} 277; CHECK-NEXT: .short 0 278; CHECK-NEXT: .long 0 279; CHECK-NEXT: .byte 1 280; CHECK-NEXT: .byte 0 281; CHECK-NEXT: .short 8 282; CHECK-NEXT: .short {{[0-9]+}} 283; CHECK-NEXT: .short 0 284; CHECK-NEXT: .long 0 285define void @propertyWrite(i64 %dummy1, i64* %obj, i64 %dummy2, i64 %a) { 286entry: 287 %resolveWrite = inttoptr i64 -559038737 to i8* 288 call anyregcc void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 6, i32 15, i8* %resolveWrite, i32 2, i64* %obj, i64 %a) 289 ret void 290} 291 292; Void JS Call 293; 294; 2 live variables in registers. 295; 296; CHECK-LABEL: .long L{{.*}}-_jsVoidCall 297; CHECK-NEXT: .short 0 298; CHECK-NEXT: .short 2 299; CHECK-NEXT: .byte 1 300; CHECK-NEXT: .byte 0 301; CHECK-NEXT: .short 8 302; CHECK-NEXT: .short {{[0-9]+}} 303; CHECK-NEXT: .short 0 304; CHECK-NEXT: .long 0 305; CHECK-NEXT: .byte 1 306; CHECK-NEXT: .byte 0 307; CHECK-NEXT: .short 8 308; CHECK-NEXT: .short {{[0-9]+}} 309; CHECK-NEXT: .short 0 310; CHECK-NEXT: .long 0 311define void @jsVoidCall(i64 %dummy1, i64* %obj, i64 %arg, i64 %l1, i64 %l2) { 312entry: 313 %resolveCall = inttoptr i64 -559038737 to i8* 314 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) 315 ret void 316} 317 318; i64 JS Call 319; 320; 2 live variables in registers. 321; 322; CHECK-LABEL: .long L{{.*}}-_jsIntCall 323; CHECK-NEXT: .short 0 324; CHECK-NEXT: .short 2 325; CHECK-NEXT: .byte 1 326; CHECK-NEXT: .byte 0 327; CHECK-NEXT: .short 8 328; CHECK-NEXT: .short {{[0-9]+}} 329; CHECK-NEXT: .short 0 330; CHECK-NEXT: .long 0 331; CHECK-NEXT: .byte 1 332; CHECK-NEXT: .byte 0 333; CHECK-NEXT: .short 8 334; CHECK-NEXT: .short {{[0-9]+}} 335; CHECK-NEXT: .short 0 336; CHECK-NEXT: .long 0 337define i64 @jsIntCall(i64 %dummy1, i64* %obj, i64 %arg, i64 %l1, i64 %l2) { 338entry: 339 %resolveCall = inttoptr i64 -559038737 to i8* 340 %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) 341 %add = add i64 %result, 3 342 ret i64 %add 343} 344 345; Spilled stack map values. 346; 347; Verify 17 stack map entries. 348; 349; CHECK-LABEL: .long L{{.*}}-_spilledValue 350; CHECK-NEXT: .short 0 351; CHECK-NEXT: .short 17 352; 353; Check that at least one is a spilled entry from RBP. 354; Location: Indirect RBP + ... 355; CHECK: .byte 3 356; CHECK-NEXT: .byte 0 357; CHECK-NEXT: .short 8 358; CHECK-NEXT: .short 6 359; CHECK-NEXT: .short 0 360; CHECK-NEXT: .long 361define 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) { 362entry: 363 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) 364 ret void 365} 366 367; Spilled stack map values. 368; 369; Verify 17 stack map entries. 370; 371; CHECK-LABEL: .long L{{.*}}-_spilledStackMapValue 372; CHECK-NEXT: .short 0 373; CHECK-NEXT: .short 17 374; 375; Check that at least one is a spilled entry from RBP. 376; Location: Indirect RBP + ... 377; CHECK: .byte 3 378; CHECK-NEXT: .byte 0 379; CHECK-NEXT: .short 8 380; CHECK-NEXT: .short 6 381; CHECK-NEXT: .short 0 382; CHECK-NEXT: .long 383define 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) { 384entry: 385 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) 386 ret void 387} 388 389; Spill a subregister stackmap operand. 390; 391; CHECK-LABEL: .long L{{.*}}-_spillSubReg 392; CHECK-NEXT: .short 0 393; 4 locations 394; CHECK-NEXT: .short 1 395; 396; Check that the subregister operand is a 4-byte spill. 397; Location: Indirect, 4-byte, RBP + ... 398; CHECK: .byte 3 399; CHECK-NEXT: .byte 0 400; CHECK-NEXT: .short 4 401; CHECK-NEXT: .short 6 402; CHECK-NEXT: .short 0 403; CHECK-NEXT: .long 404define void @spillSubReg(i64 %arg) #0 { 405bb: 406 br i1 undef, label %bb1, label %bb2 407 408bb1: 409 unreachable 410 411bb2: 412 %tmp = load i64, i64* inttoptr (i64 140685446136880 to i64*) 413 br i1 undef, label %bb16, label %bb17 414 415bb16: 416 unreachable 417 418bb17: 419 %tmp32 = trunc i64 %tmp to i32 420 br i1 undef, label %bb60, label %bb61 421 422bb60: 423 tail call void asm sideeffect "nop", "~{ax},~{bx},~{cx},~{dx},~{bp},~{si},~{di},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"() nounwind 424 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 13, i32 5, i32 %tmp32) 425 unreachable 426 427bb61: 428 unreachable 429} 430 431; Map a single byte subregister. There is no DWARF register number, so 432; we expect the register to be encoded with the proper size and spill offset. We don't know which 433; 434; CHECK-LABEL: .long L{{.*}}-_subRegOffset 435; CHECK-NEXT: .short 0 436; 2 locations 437; CHECK-NEXT: .short 2 438; 439; Check that the subregister operands are 1-byte spills. 440; Location 0: Register, 4-byte, AL 441; CHECK-NEXT: .byte 1 442; CHECK-NEXT: .byte 0 443; CHECK-NEXT: .short 1 444; CHECK-NEXT: .short 0 445; CHECK-NEXT: .short 0 446; CHECK-NEXT: .long 0 447; 448; Location 1: Register, 4-byte, BL 449; CHECK-NEXT: .byte 1 450; CHECK-NEXT: .byte 0 451; CHECK-NEXT: .short 1 452; CHECK-NEXT: .short 3 453; CHECK-NEXT: .short 0 454; CHECK-NEXT: .long 0 455define void @subRegOffset(i16 %arg) { 456 %v = mul i16 %arg, 5 457 %a0 = trunc i16 %v to i8 458 tail call void asm sideeffect "nop", "~{bx}"() nounwind 459 %arghi = lshr i16 %v, 8 460 %a1 = trunc i16 %arghi to i8 461 tail call void asm sideeffect "nop", "~{cx},~{dx},~{bp},~{si},~{di},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"() nounwind 462 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 14, i32 5, i8 %a0, i8 %a1) 463 ret void 464} 465 466; Map a constant value. 467; 468; CHECK-LABEL: .long L{{.*}}-_liveConstant 469; CHECK-NEXT: .short 0 470; 1 location 471; CHECK-NEXT: .short 1 472; Loc 0: SmallConstant 473; CHECK-NEXT: .byte 4 474; CHECK-NEXT: .byte 0 475; CHECK-NEXT: .short 8 476; CHECK-NEXT: .short 0 477; CHECK-NEXT: .short 0 478; CHECK-NEXT: .long 33 479 480define void @liveConstant() { 481 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 15, i32 5, i32 33) 482 ret void 483} 484 485; Directly map an alloca's address. 486; 487; Callsite 16 488; CHECK-LABEL: .long L{{.*}}-_directFrameIdx 489; CHECK-NEXT: .short 0 490; 1 location 491; CHECK-NEXT: .short 1 492; Loc 0: Direct RBP - ofs 493; CHECK-NEXT: .byte 2 494; CHECK-NEXT: .byte 0 495; CHECK-NEXT: .short 8 496; CHECK-NEXT: .short 6 497; CHECK-NEXT: .short 0 498; CHECK-NEXT: .long 499 500; Callsite 17 501; CHECK-LABEL: .long L{{.*}}-_directFrameIdx 502; CHECK-NEXT: .short 0 503; 2 locations 504; CHECK-NEXT: .short 2 505; Loc 0: Direct RBP - ofs 506; CHECK-NEXT: .byte 2 507; CHECK-NEXT: .byte 0 508; CHECK-NEXT: .short 8 509; CHECK-NEXT: .short 6 510; CHECK-NEXT: .short 0 511; CHECK-NEXT: .long 512; Loc 1: Direct RBP - ofs 513; CHECK-NEXT: .byte 2 514; CHECK-NEXT: .byte 0 515; CHECK-NEXT: .short 8 516; CHECK-NEXT: .short 6 517; CHECK-NEXT: .short 0 518; CHECK-NEXT: .long 519define void @directFrameIdx() { 520entry: 521 %metadata1 = alloca i64, i32 3, align 8 522 store i64 11, i64* %metadata1 523 store i64 12, i64* %metadata1 524 store i64 13, i64* %metadata1 525 call void (i64, i32, ...) @llvm.experimental.stackmap(i64 16, i32 0, i64* %metadata1) 526 %metadata2 = alloca i8, i32 4, align 8 527 %metadata3 = alloca i16, i32 4, align 8 528 call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 17, i32 5, i8* null, i32 0, i8* %metadata2, i16* %metadata3) 529 ret void 530} 531 532; Test a 64-bit ID. 533; 534; CHECK: .quad 4294967295 535; CHECK-LABEL: .long L{{.*}}-_longid 536; CHECK: .quad 4294967296 537; CHECK-LABEL: .long L{{.*}}-_longid 538; CHECK: .quad 9223372036854775807 539; CHECK-LABEL: .long L{{.*}}-_longid 540; CHECK: .quad -1 541; CHECK-LABEL: .long L{{.*}}-_longid 542define void @longid() { 543entry: 544 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 4294967295, i32 0, i8* null, i32 0) 545 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 4294967296, i32 0, i8* null, i32 0) 546 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 9223372036854775807, i32 0, i8* null, i32 0) 547 tail call void (i64, i32, i8*, i32, ...) @llvm.experimental.patchpoint.void(i64 -1, i32 0, i8* null, i32 0) 548 ret void 549} 550 551; Map a value when R11 is the only free register. 552; The scratch register should not be used for a live stackmap value. 553; 554; CHECK-LABEL: .long L{{.*}}-_clobberScratch 555; CHECK-NEXT: .short 0 556; 1 location 557; CHECK-NEXT: .short 1 558; Loc 0: Indirect fp - offset 559; CHECK-NEXT: .byte 3 560; CHECK-NEXT: .byte 0 561; CHECK-NEXT: .short 4 562; CHECK-NEXT: .short 6 563; CHECK-NEXT: .short 0 564; CHECK-NEXT: .long -{{[0-9]+}} 565define void @clobberScratch(i32 %a) { 566 tail call void asm sideeffect "nop", "~{ax},~{bx},~{cx},~{dx},~{bp},~{si},~{di},~{r8},~{r9},~{r10},~{r12},~{r13},~{r14},~{r15}"() nounwind 567 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 16, i32 8, i32 %a) 568 ret void 569} 570 571; A stack frame which needs to be realigned at runtime (to meet alignment 572; criteria for values on the stack) does not have a fixed frame size. 573; CHECK-LABEL: .long L{{.*}}-_needsStackRealignment 574; CHECK-NEXT: .short 0 575; 0 locations 576; CHECK-NEXT: .short 0 577define void @needsStackRealignment() { 578 %val = alloca i64, i32 3, align 128 579 tail call void (...) @escape_values(i64* %val) 580; Note: Adding any non-constant to the stackmap would fail because we 581; expected to be able to address off the frame pointer. In a realigned 582; frame, we must use the stack pointer instead. This is a separate bug. 583 tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 0, i32 0) 584 ret void 585} 586declare void @escape_values(...) 587 588declare void @llvm.experimental.stackmap(i64, i32, ...) 589declare void @llvm.experimental.patchpoint.void(i64, i32, i8*, i32, ...) 590declare i64 @llvm.experimental.patchpoint.i64(i64, i32, i8*, i32, ...) 591