1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals 2; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,TUNIT 3; RUN: opt -aa-pipeline=basic-aa -passes=attributor-cgscc -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK,CGSCC 4 5@g = global ptr null ; <ptr> [#uses=1] 6 7;. 8; CHECK: @g = global ptr null 9; CHECK: @lookup_table = global [2 x i1] [i1 false, i1 true] 10; CHECK: @g2 = global ptr null 11; CHECK: @g3 = global ptr null 12;. 13define ptr @c1(ptr %q) { 14; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 15; CHECK-LABEL: define {{[^@]+}}@c1 16; CHECK-SAME: (ptr nofree readnone returned "no-capture-maybe-returned" [[Q:%.*]]) #[[ATTR0:[0-9]+]] { 17; CHECK-NEXT: ret ptr [[Q]] 18; 19 ret ptr %q 20} 21 22; It would also be acceptable to mark %q as readnone. Update @c3 too. 23define void @c2(ptr %q) { 24; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write) 25; CHECK-LABEL: define {{[^@]+}}@c2 26; CHECK-SAME: (ptr nofree writeonly [[Q:%.*]]) #[[ATTR1:[0-9]+]] { 27; CHECK-NEXT: store ptr [[Q]], ptr @g, align 8 28; CHECK-NEXT: ret void 29; 30 store ptr %q, ptr @g 31 ret void 32} 33 34define void @c3(ptr %q) { 35; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write) 36; TUNIT-LABEL: define {{[^@]+}}@c3 37; TUNIT-SAME: (ptr nofree writeonly [[Q:%.*]]) #[[ATTR1]] { 38; TUNIT-NEXT: call void @c2(ptr nofree writeonly [[Q]]) #[[ATTR17:[0-9]+]] 39; TUNIT-NEXT: ret void 40; 41; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(write) 42; CGSCC-LABEL: define {{[^@]+}}@c3 43; CGSCC-SAME: (ptr nofree writeonly [[Q:%.*]]) #[[ATTR2:[0-9]+]] { 44; CGSCC-NEXT: call void @c2(ptr nofree writeonly [[Q]]) #[[ATTR20:[0-9]+]] 45; CGSCC-NEXT: ret void 46; 47 call void @c2(ptr %q) 48 ret void 49} 50 51define i1 @c4(ptr %q, i32 %bitno) { 52; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 53; CHECK-LABEL: define {{[^@]+}}@c4 54; CHECK-SAME: (ptr nofree readnone [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR0]] { 55; CHECK-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32 56; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]] 57; CHECK-NEXT: [[BIT:%.*]] = trunc i32 [[TMP2]] to i1 58; CHECK-NEXT: br i1 [[BIT]], label [[L1:%.*]], label [[L0:%.*]] 59; CHECK: l0: 60; CHECK-NEXT: ret i1 false 61; CHECK: l1: 62; CHECK-NEXT: ret i1 true 63; 64 %tmp = ptrtoint ptr %q to i32 65 %tmp2 = lshr i32 %tmp, %bitno 66 %bit = trunc i32 %tmp2 to i1 67 br i1 %bit, label %l1, label %l0 68l0: 69 ret i1 0 ; escaping value not caught by def-use chaining. 70l1: 71 ret i1 1 ; escaping value not caught by def-use chaining. 72} 73 74; c4b is c4 but without the escaping part 75define i1 @c4b(ptr %q, i32 %bitno) { 76; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 77; CHECK-LABEL: define {{[^@]+}}@c4b 78; CHECK-SAME: (ptr nofree readnone captures(none) [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR0]] { 79; CHECK-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32 80; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]] 81; CHECK-NEXT: [[BIT:%.*]] = trunc i32 [[TMP2]] to i1 82; CHECK-NEXT: br i1 [[BIT]], label [[L1:%.*]], label [[L0:%.*]] 83; CHECK: l0: 84; CHECK-NEXT: ret i1 false 85; CHECK: l1: 86; CHECK-NEXT: ret i1 false 87; 88 %tmp = ptrtoint ptr %q to i32 89 %tmp2 = lshr i32 %tmp, %bitno 90 %bit = trunc i32 %tmp2 to i1 91 br i1 %bit, label %l1, label %l0 92l0: 93 ret i1 0 ; not escaping! 94l1: 95 ret i1 0 ; not escaping! 96} 97 98@lookup_table = global [2 x i1] [ i1 0, i1 1 ] 99 100define i1 @c5(ptr %q, i32 %bitno) { 101; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read) 102; TUNIT-LABEL: define {{[^@]+}}@c5 103; TUNIT-SAME: (ptr nofree readonly [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR2:[0-9]+]] { 104; TUNIT-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32 105; TUNIT-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]] 106; TUNIT-NEXT: [[BIT:%.*]] = and i32 [[TMP2]], 1 107; TUNIT-NEXT: [[LOOKUP:%.*]] = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 [[BIT]] 108; TUNIT-NEXT: [[VAL:%.*]] = load i1, ptr [[LOOKUP]], align 1 109; TUNIT-NEXT: ret i1 [[VAL]] 110; 111; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read) 112; CGSCC-LABEL: define {{[^@]+}}@c5 113; CGSCC-SAME: (ptr nofree readonly [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR3:[0-9]+]] { 114; CGSCC-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32 115; CGSCC-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]] 116; CGSCC-NEXT: [[BIT:%.*]] = and i32 [[TMP2]], 1 117; CGSCC-NEXT: [[LOOKUP:%.*]] = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 [[BIT]] 118; CGSCC-NEXT: [[VAL:%.*]] = load i1, ptr [[LOOKUP]], align 1 119; CGSCC-NEXT: ret i1 [[VAL]] 120; 121 %tmp = ptrtoint ptr %q to i32 122 %tmp2 = lshr i32 %tmp, %bitno 123 %bit = and i32 %tmp2, 1 124 ; subtle escape mechanism follows 125 %lookup = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 %bit 126 %val = load i1, ptr %lookup 127 ret i1 %val 128} 129 130declare void @throw_if_bit_set(ptr, i8) readonly 131 132define i1 @c6(ptr %q, i8 %bit) personality ptr @__gxx_personality_v0 { 133; TUNIT: Function Attrs: nosync memory(read) 134; TUNIT-LABEL: define {{[^@]+}}@c6 135; TUNIT-SAME: (ptr readonly [[Q:%.*]], i8 [[BIT:%.*]]) #[[ATTR4:[0-9]+]] personality ptr @__gxx_personality_v0 { 136; TUNIT-NEXT: invoke void @throw_if_bit_set(ptr readonly [[Q]], i8 [[BIT]]) #[[ATTR4]] 137; TUNIT-NEXT: to label [[RET0:%.*]] unwind label [[RET1:%.*]] 138; TUNIT: ret0: 139; TUNIT-NEXT: ret i1 false 140; TUNIT: ret1: 141; TUNIT-NEXT: [[EXN:%.*]] = landingpad { ptr, i32 } 142; TUNIT-NEXT: cleanup 143; TUNIT-NEXT: ret i1 true 144; 145; CGSCC: Function Attrs: nosync memory(read) 146; CGSCC-LABEL: define {{[^@]+}}@c6 147; CGSCC-SAME: (ptr readonly [[Q:%.*]], i8 [[BIT:%.*]]) #[[ATTR5:[0-9]+]] personality ptr @__gxx_personality_v0 { 148; CGSCC-NEXT: invoke void @throw_if_bit_set(ptr readonly [[Q]], i8 [[BIT]]) #[[ATTR5]] 149; CGSCC-NEXT: to label [[RET0:%.*]] unwind label [[RET1:%.*]] 150; CGSCC: ret0: 151; CGSCC-NEXT: ret i1 false 152; CGSCC: ret1: 153; CGSCC-NEXT: [[EXN:%.*]] = landingpad { ptr, i32 } 154; CGSCC-NEXT: cleanup 155; CGSCC-NEXT: ret i1 true 156; 157 invoke void @throw_if_bit_set(ptr %q, i8 %bit) 158 to label %ret0 unwind label %ret1 159ret0: 160 ret i1 0 161ret1: 162 %exn = landingpad {ptr, i32} 163 cleanup 164 ret i1 1 165} 166 167declare i32 @__gxx_personality_v0(...) 168 169define ptr @lookup_bit(ptr %q, i32 %bitno) readnone nounwind { 170; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 171; CHECK-LABEL: define {{[^@]+}}@lookup_bit 172; CHECK-SAME: (ptr nofree readnone [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR0]] { 173; CHECK-NEXT: [[TMP:%.*]] = ptrtoint ptr [[Q]] to i32 174; CHECK-NEXT: [[TMP2:%.*]] = lshr i32 [[TMP]], [[BITNO]] 175; CHECK-NEXT: [[BIT:%.*]] = and i32 [[TMP2]], 1 176; CHECK-NEXT: [[LOOKUP:%.*]] = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 [[BIT]] 177; CHECK-NEXT: ret ptr [[LOOKUP]] 178; 179 %tmp = ptrtoint ptr %q to i32 180 %tmp2 = lshr i32 %tmp, %bitno 181 %bit = and i32 %tmp2, 1 182 %lookup = getelementptr [2 x i1], ptr @lookup_table, i32 0, i32 %bit 183 ret ptr %lookup 184} 185 186define i1 @c7(ptr %q, i32 %bitno) { 187; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(read) 188; TUNIT-LABEL: define {{[^@]+}}@c7 189; TUNIT-SAME: (ptr nofree readonly [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR2]] { 190; TUNIT-NEXT: [[PTR:%.*]] = call ptr @lookup_bit(ptr noalias nofree readnone [[Q]], i32 [[BITNO]]) #[[ATTR18:[0-9]+]] 191; TUNIT-NEXT: [[VAL:%.*]] = load i1, ptr [[PTR]], align 1 192; TUNIT-NEXT: ret i1 [[VAL]] 193; 194; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(read) 195; CGSCC-LABEL: define {{[^@]+}}@c7 196; CGSCC-SAME: (ptr nofree readonly [[Q:%.*]], i32 [[BITNO:%.*]]) #[[ATTR6:[0-9]+]] { 197; CGSCC-NEXT: [[PTR:%.*]] = call ptr @lookup_bit(ptr noalias nofree readnone [[Q]], i32 [[BITNO]]) #[[ATTR21:[0-9]+]] 198; CGSCC-NEXT: [[VAL:%.*]] = load i1, ptr [[PTR]], align 1 199; CGSCC-NEXT: ret i1 [[VAL]] 200; 201 %ptr = call ptr @lookup_bit(ptr %q, i32 %bitno) 202 %val = load i1, ptr %ptr 203 ret i1 %val 204} 205 206 207define i32 @nc1(ptr %q, ptr %p, i1 %b) { 208; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn 209; TUNIT-LABEL: define {{[^@]+}}@nc1 210; TUNIT-SAME: (ptr nofree [[Q:%.*]], ptr nofree captures(none) [[P:%.*]], i1 [[B:%.*]]) #[[ATTR5:[0-9]+]] { 211; TUNIT-NEXT: e: 212; TUNIT-NEXT: br label [[L:%.*]] 213; TUNIT: l: 214; TUNIT-NEXT: [[X:%.*]] = phi ptr [ [[P]], [[E:%.*]] ] 215; TUNIT-NEXT: [[Y:%.*]] = phi ptr [ [[Q]], [[E]] ] 216; TUNIT-NEXT: [[TMP2:%.*]] = select i1 [[B]], ptr [[P]], ptr [[Q]] 217; TUNIT-NEXT: [[VAL:%.*]] = load i32, ptr [[TMP2]], align 4 218; TUNIT-NEXT: store i32 0, ptr [[P]], align 4 219; TUNIT-NEXT: store ptr [[Q]], ptr @g, align 8 220; TUNIT-NEXT: ret i32 [[VAL]] 221; 222; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn 223; CGSCC-LABEL: define {{[^@]+}}@nc1 224; CGSCC-SAME: (ptr nofree [[Q:%.*]], ptr nofree captures(none) [[P:%.*]], i1 [[B:%.*]]) #[[ATTR7:[0-9]+]] { 225; CGSCC-NEXT: e: 226; CGSCC-NEXT: br label [[L:%.*]] 227; CGSCC: l: 228; CGSCC-NEXT: [[X:%.*]] = phi ptr [ [[P]], [[E:%.*]] ] 229; CGSCC-NEXT: [[Y:%.*]] = phi ptr [ [[Q]], [[E]] ] 230; CGSCC-NEXT: [[TMP2:%.*]] = select i1 [[B]], ptr [[P]], ptr [[Q]] 231; CGSCC-NEXT: [[VAL:%.*]] = load i32, ptr [[TMP2]], align 4 232; CGSCC-NEXT: store i32 0, ptr [[P]], align 4 233; CGSCC-NEXT: store ptr [[Q]], ptr @g, align 8 234; CGSCC-NEXT: ret i32 [[VAL]] 235; 236e: 237 br label %l 238l: 239 %x = phi ptr [ %p, %e ] 240 %y = phi ptr [ %q, %e ] 241 %tmp2 = select i1 %b, ptr %x, ptr %y 242 %val = load i32, ptr %tmp2 ; <i32> [#uses=1] 243 store i32 0, ptr %x 244 store ptr %y, ptr @g 245 ret i32 %val 246} 247 248define i32 @nc1_addrspace(ptr %q, ptr addrspace(1) %p, i1 %b) { 249; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn 250; TUNIT-LABEL: define {{[^@]+}}@nc1_addrspace 251; TUNIT-SAME: (ptr nofree [[Q:%.*]], ptr addrspace(1) nofree captures(none) [[P:%.*]], i1 [[B:%.*]]) #[[ATTR5]] { 252; TUNIT-NEXT: e: 253; TUNIT-NEXT: br label [[L:%.*]] 254; TUNIT: l: 255; TUNIT-NEXT: [[X:%.*]] = phi ptr addrspace(1) [ [[P]], [[E:%.*]] ] 256; TUNIT-NEXT: [[Y:%.*]] = phi ptr [ [[Q]], [[E]] ] 257; TUNIT-NEXT: [[TMP:%.*]] = addrspacecast ptr addrspace(1) [[P]] to ptr 258; TUNIT-NEXT: [[TMP2:%.*]] = select i1 [[B]], ptr [[TMP]], ptr [[Q]] 259; TUNIT-NEXT: [[VAL:%.*]] = load i32, ptr [[TMP2]], align 4 260; TUNIT-NEXT: store i32 0, ptr [[TMP]], align 4 261; TUNIT-NEXT: store ptr [[Q]], ptr @g, align 8 262; TUNIT-NEXT: ret i32 [[VAL]] 263; 264; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn 265; CGSCC-LABEL: define {{[^@]+}}@nc1_addrspace 266; CGSCC-SAME: (ptr nofree [[Q:%.*]], ptr addrspace(1) nofree captures(none) [[P:%.*]], i1 [[B:%.*]]) #[[ATTR7]] { 267; CGSCC-NEXT: e: 268; CGSCC-NEXT: br label [[L:%.*]] 269; CGSCC: l: 270; CGSCC-NEXT: [[X:%.*]] = phi ptr addrspace(1) [ [[P]], [[E:%.*]] ] 271; CGSCC-NEXT: [[Y:%.*]] = phi ptr [ [[Q]], [[E]] ] 272; CGSCC-NEXT: [[TMP:%.*]] = addrspacecast ptr addrspace(1) [[P]] to ptr 273; CGSCC-NEXT: [[TMP2:%.*]] = select i1 [[B]], ptr [[TMP]], ptr [[Q]] 274; CGSCC-NEXT: [[VAL:%.*]] = load i32, ptr [[TMP2]], align 4 275; CGSCC-NEXT: store i32 0, ptr [[TMP]], align 4 276; CGSCC-NEXT: store ptr [[Q]], ptr @g, align 8 277; CGSCC-NEXT: ret i32 [[VAL]] 278; 279e: 280 br label %l 281l: 282 %x = phi ptr addrspace(1) [ %p, %e ] 283 %y = phi ptr [ %q, %e ] 284 %tmp = addrspacecast ptr addrspace(1) %x to ptr ; <ptr> [#uses=2] 285 %tmp2 = select i1 %b, ptr %tmp, ptr %y 286 %val = load i32, ptr %tmp2 ; <i32> [#uses=1] 287 store i32 0, ptr %tmp 288 store ptr %y, ptr @g 289 ret i32 %val 290} 291 292define void @nc2(ptr %p, ptr %q) { 293; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn 294; TUNIT-LABEL: define {{[^@]+}}@nc2 295; TUNIT-SAME: (ptr nofree captures(none) [[P:%.*]], ptr nofree [[Q:%.*]]) #[[ATTR5]] { 296; TUNIT-NEXT: [[TMP1:%.*]] = call i32 @nc1(ptr nofree [[Q]], ptr nofree captures(none) [[P]], i1 noundef false) #[[ATTR19:[0-9]+]] 297; TUNIT-NEXT: ret void 298; 299; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn 300; CGSCC-LABEL: define {{[^@]+}}@nc2 301; CGSCC-SAME: (ptr nofree align 4 captures(none) [[P:%.*]], ptr nofree [[Q:%.*]]) #[[ATTR8:[0-9]+]] { 302; CGSCC-NEXT: [[TMP1:%.*]] = call i32 @nc1(ptr nofree [[Q]], ptr nofree align 4 captures(none) [[P]], i1 noundef false) #[[ATTR22:[0-9]+]] 303; CGSCC-NEXT: ret void 304; 305 %1 = call i32 @nc1(ptr %q, ptr %p, i1 0) ; <i32> [#uses=0] 306 ret void 307} 308 309 310define void @nc3(ptr %p) { 311; CHECK-LABEL: define {{[^@]+}}@nc3 312; CHECK-SAME: (ptr nofree noundef nonnull captures(none) [[P:%.*]]) { 313; CHECK-NEXT: call void [[P]]() 314; CHECK-NEXT: ret void 315; 316 call void %p() 317 ret void 318} 319 320; The following test is tricky because improvements to AAIsDead can cause the call to be removed. 321; FIXME: readonly and nocapture missing on the pointer. 322declare void @external(ptr readonly) nounwind argmemonly 323define void @nc4(ptr %p) { 324; TUNIT: Function Attrs: nounwind memory(argmem: readwrite) 325; TUNIT-LABEL: define {{[^@]+}}@nc4 326; TUNIT-SAME: (ptr nofree [[P:%.*]]) #[[ATTR6:[0-9]+]] { 327; TUNIT-NEXT: call void @external(ptr nofree readonly [[P]]) #[[ATTR20:[0-9]+]] 328; TUNIT-NEXT: ret void 329; 330; CGSCC: Function Attrs: nounwind memory(argmem: readwrite) 331; CGSCC-LABEL: define {{[^@]+}}@nc4 332; CGSCC-SAME: (ptr nofree [[P:%.*]]) #[[ATTR9:[0-9]+]] { 333; CGSCC-NEXT: call void @external(ptr nofree readonly [[P]]) #[[ATTR23:[0-9]+]] 334; CGSCC-NEXT: ret void 335; 336 call void @external(ptr %p) 337 ret void 338} 339 340define void @nc5(ptr %f, ptr %p) { 341; CHECK-LABEL: define {{[^@]+}}@nc5 342; CHECK-SAME: (ptr nofree noundef nonnull captures(none) [[F:%.*]], ptr captures(none) [[P:%.*]]) { 343; CHECK-NEXT: call void [[F]](ptr captures(none) [[P]]) 344; CHECK-NEXT: ret void 345; 346 call void %f(ptr %p) readonly nounwind 347 call void %f(ptr nocapture %p) 348 ret void 349} 350 351; It would be acceptable to add readnone to %y1_1 and %y1_2. 352define void @test1_1(ptr %x1_1, ptr %y1_1, i1 %c) { 353; TUNIT: Function Attrs: nofree nosync nounwind memory(write) 354; TUNIT-LABEL: define {{[^@]+}}@test1_1 355; TUNIT-SAME: (ptr nofree readnone captures(none) [[X1_1:%.*]], ptr nofree readnone captures(none) [[Y1_1:%.*]], i1 [[C:%.*]]) #[[ATTR7:[0-9]+]] { 356; TUNIT-NEXT: [[TMP1:%.*]] = call ptr @test1_2(ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone "no-capture-maybe-returned" [[Y1_1]], i1 noundef [[C]]) #[[ATTR7]] 357; TUNIT-NEXT: store ptr null, ptr @g, align 8 358; TUNIT-NEXT: ret void 359; 360; CGSCC: Function Attrs: nofree nosync nounwind memory(write) 361; CGSCC-LABEL: define {{[^@]+}}@test1_1 362; CGSCC-SAME: (ptr nofree readnone captures(none) [[X1_1:%.*]], ptr nofree readnone captures(none) [[Y1_1:%.*]], i1 [[C:%.*]]) #[[ATTR10:[0-9]+]] { 363; CGSCC-NEXT: [[TMP1:%.*]] = call ptr @test1_2(ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone "no-capture-maybe-returned" [[Y1_1]], i1 noundef [[C]]) #[[ATTR10]] 364; CGSCC-NEXT: store ptr null, ptr @g, align 8 365; CGSCC-NEXT: ret void 366; 367 call ptr @test1_2(ptr %x1_1, ptr %y1_1, i1 %c) 368 store ptr null, ptr @g 369 ret void 370} 371 372define ptr @test1_2(ptr %x1_2, ptr %y1_2, i1 %c) { 373; TUNIT: Function Attrs: nofree nosync nounwind memory(write) 374; TUNIT-LABEL: define {{[^@]+}}@test1_2 375; TUNIT-SAME: (ptr nofree readnone captures(none) [[X1_2:%.*]], ptr nofree readnone returned "no-capture-maybe-returned" [[Y1_2:%.*]], i1 noundef [[C:%.*]]) #[[ATTR7]] { 376; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] 377; TUNIT: t: 378; TUNIT-NEXT: call void @test1_1(ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone captures(none) [[Y1_2]], i1 noundef [[C]]) #[[ATTR7]] 379; TUNIT-NEXT: store ptr null, ptr @g, align 8 380; TUNIT-NEXT: br label [[F]] 381; TUNIT: f: 382; TUNIT-NEXT: ret ptr [[Y1_2]] 383; 384; CGSCC: Function Attrs: nofree nosync nounwind memory(write) 385; CGSCC-LABEL: define {{[^@]+}}@test1_2 386; CGSCC-SAME: (ptr nofree readnone captures(none) [[X1_2:%.*]], ptr nofree readnone returned "no-capture-maybe-returned" [[Y1_2:%.*]], i1 noundef [[C:%.*]]) #[[ATTR10]] { 387; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] 388; CGSCC: t: 389; CGSCC-NEXT: call void @test1_1(ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone captures(none) [[Y1_2]], i1 noundef [[C]]) #[[ATTR10]] 390; CGSCC-NEXT: store ptr null, ptr @g, align 8 391; CGSCC-NEXT: br label [[F]] 392; CGSCC: f: 393; CGSCC-NEXT: ret ptr [[Y1_2]] 394; 395 br i1 %c, label %t, label %f 396t: 397 call void @test1_1(ptr %x1_2, ptr %y1_2, i1 %c) 398 store ptr null, ptr @g 399 br label %f 400f: 401 ret ptr %y1_2 402} 403 404define void @test2(ptr %x2) { 405; TUNIT: Function Attrs: nofree nosync nounwind memory(write) 406; TUNIT-LABEL: define {{[^@]+}}@test2 407; TUNIT-SAME: (ptr nofree readnone captures(none) [[X2:%.*]]) #[[ATTR7]] { 408; TUNIT-NEXT: call void @test2(ptr noalias nofree readnone captures(none) undef) #[[ATTR7]] 409; TUNIT-NEXT: store ptr null, ptr @g, align 8 410; TUNIT-NEXT: ret void 411; 412; CGSCC: Function Attrs: nofree nosync nounwind memory(write) 413; CGSCC-LABEL: define {{[^@]+}}@test2 414; CGSCC-SAME: (ptr nofree readnone captures(none) [[X2:%.*]]) #[[ATTR10]] { 415; CGSCC-NEXT: call void @test2(ptr noalias nofree readnone captures(none) undef) #[[ATTR10]] 416; CGSCC-NEXT: store ptr null, ptr @g, align 8 417; CGSCC-NEXT: ret void 418; 419 call void @test2(ptr %x2) 420 store ptr null, ptr @g 421 ret void 422} 423 424define void @test3(ptr %x3, ptr %y3, ptr %z3) { 425; TUNIT: Function Attrs: nofree nosync nounwind memory(write) 426; TUNIT-LABEL: define {{[^@]+}}@test3 427; TUNIT-SAME: (ptr nofree readnone captures(none) [[X3:%.*]], ptr nofree readnone captures(none) [[Y3:%.*]], ptr nofree readnone captures(none) [[Z3:%.*]]) #[[ATTR7]] { 428; TUNIT-NEXT: call void @test3(ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone captures(none) undef) #[[ATTR7]] 429; TUNIT-NEXT: store ptr null, ptr @g, align 8 430; TUNIT-NEXT: ret void 431; 432; CGSCC: Function Attrs: nofree nosync nounwind memory(write) 433; CGSCC-LABEL: define {{[^@]+}}@test3 434; CGSCC-SAME: (ptr nofree readnone captures(none) [[X3:%.*]], ptr nofree readnone captures(none) [[Y3:%.*]], ptr nofree readnone captures(none) [[Z3:%.*]]) #[[ATTR10]] { 435; CGSCC-NEXT: call void @test3(ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone captures(none) undef) #[[ATTR10]] 436; CGSCC-NEXT: store ptr null, ptr @g, align 8 437; CGSCC-NEXT: ret void 438; 439 call void @test3(ptr %z3, ptr %y3, ptr %x3) 440 store ptr null, ptr @g 441 ret void 442} 443 444define void @test4_1(ptr %x4_1, i1 %c) { 445; TUNIT: Function Attrs: nofree nosync nounwind memory(write) 446; TUNIT-LABEL: define {{[^@]+}}@test4_1 447; TUNIT-SAME: (ptr nofree readnone captures(none) [[X4_1:%.*]], i1 [[C:%.*]]) #[[ATTR7]] { 448; TUNIT-NEXT: [[TMP1:%.*]] = call ptr @test4_2(ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone "no-capture-maybe-returned" [[X4_1]], ptr noalias nofree readnone captures(none) undef, i1 noundef [[C]]) #[[ATTR7]] 449; TUNIT-NEXT: store ptr null, ptr @g, align 8 450; TUNIT-NEXT: ret void 451; 452; CGSCC: Function Attrs: nofree nosync nounwind memory(write) 453; CGSCC-LABEL: define {{[^@]+}}@test4_1 454; CGSCC-SAME: (ptr nofree readnone captures(none) [[X4_1:%.*]], i1 [[C:%.*]]) #[[ATTR10]] { 455; CGSCC-NEXT: [[TMP1:%.*]] = call ptr @test4_2(ptr noalias nofree readnone captures(none) undef, ptr noalias nofree readnone "no-capture-maybe-returned" [[X4_1]], ptr noalias nofree readnone captures(none) undef, i1 noundef [[C]]) #[[ATTR10]] 456; CGSCC-NEXT: store ptr null, ptr @g, align 8 457; CGSCC-NEXT: ret void 458; 459 call ptr @test4_2(ptr %x4_1, ptr %x4_1, ptr %x4_1, i1 %c) 460 store ptr null, ptr @g 461 ret void 462} 463 464define ptr @test4_2(ptr %x4_2, ptr %y4_2, ptr %z4_2, i1 %c) { 465; TUNIT: Function Attrs: nofree nosync nounwind memory(write) 466; TUNIT-LABEL: define {{[^@]+}}@test4_2 467; TUNIT-SAME: (ptr nofree readnone captures(none) [[X4_2:%.*]], ptr nofree readnone returned "no-capture-maybe-returned" [[Y4_2:%.*]], ptr nofree readnone captures(none) [[Z4_2:%.*]], i1 noundef [[C:%.*]]) #[[ATTR7]] { 468; TUNIT-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] 469; TUNIT: t: 470; TUNIT-NEXT: call void @test4_1(ptr nofree noundef readnone align 4294967296 null, i1 noundef [[C]]) #[[ATTR7]] 471; TUNIT-NEXT: store ptr null, ptr @g, align 8 472; TUNIT-NEXT: br label [[F]] 473; TUNIT: f: 474; TUNIT-NEXT: ret ptr [[Y4_2]] 475; 476; CGSCC: Function Attrs: nofree nosync nounwind memory(write) 477; CGSCC-LABEL: define {{[^@]+}}@test4_2 478; CGSCC-SAME: (ptr nofree readnone captures(none) [[X4_2:%.*]], ptr nofree readnone returned "no-capture-maybe-returned" [[Y4_2:%.*]], ptr nofree readnone captures(none) [[Z4_2:%.*]], i1 noundef [[C:%.*]]) #[[ATTR10]] { 479; CGSCC-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]] 480; CGSCC: t: 481; CGSCC-NEXT: call void @test4_1(ptr nofree noundef readnone align 4294967296 null, i1 noundef [[C]]) #[[ATTR10]] 482; CGSCC-NEXT: store ptr null, ptr @g, align 8 483; CGSCC-NEXT: br label [[F]] 484; CGSCC: f: 485; CGSCC-NEXT: ret ptr [[Y4_2]] 486; 487 br i1 %c, label %t, label %f 488t: 489 call void @test4_1(ptr null, i1 %c) 490 store ptr null, ptr @g 491 br label %f 492f: 493 ret ptr %y4_2 494} 495 496declare ptr @test5_1(ptr %x5_1) 497 498define void @test5_2(ptr %x5_2) { 499; CHECK-LABEL: define {{[^@]+}}@test5_2 500; CHECK-SAME: (ptr [[X5_2:%.*]]) { 501; CHECK-NEXT: [[TMP1:%.*]] = call ptr @test5_1(ptr [[X5_2]]) 502; CHECK-NEXT: store ptr null, ptr @g, align 8 503; CHECK-NEXT: ret void 504; 505 call ptr @test5_1(ptr %x5_2) 506 store ptr null, ptr @g 507 ret void 508} 509 510declare void @test6_1(ptr %x6_1, ptr nocapture %y6_1, ...) 511 512define void @test6_2(ptr %x6_2, ptr %y6_2, ptr %z6_2) { 513; CHECK-LABEL: define {{[^@]+}}@test6_2 514; CHECK-SAME: (ptr [[X6_2:%.*]], ptr captures(none) [[Y6_2:%.*]], ptr [[Z6_2:%.*]]) { 515; CHECK-NEXT: call void (ptr, ptr, ...) @test6_1(ptr [[X6_2]], ptr captures(none) [[Y6_2]], ptr [[Z6_2]]) 516; CHECK-NEXT: store ptr null, ptr @g, align 8 517; CHECK-NEXT: ret void 518; 519 call void (ptr, ptr, ...) @test6_1(ptr %x6_2, ptr %y6_2, ptr %z6_2) 520 store ptr null, ptr @g 521 ret void 522} 523 524define void @test_cmpxchg(ptr %p) { 525; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) 526; TUNIT-LABEL: define {{[^@]+}}@test_cmpxchg 527; TUNIT-SAME: (ptr nofree noundef nonnull align 4 captures(none) dereferenceable(4) [[P:%.*]]) #[[ATTR8:[0-9]+]] { 528; TUNIT-NEXT: [[TMP1:%.*]] = cmpxchg ptr [[P]], i32 0, i32 1 acquire monotonic, align 4 529; TUNIT-NEXT: ret void 530; 531; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) 532; CGSCC-LABEL: define {{[^@]+}}@test_cmpxchg 533; CGSCC-SAME: (ptr nofree noundef nonnull align 4 captures(none) dereferenceable(4) [[P:%.*]]) #[[ATTR11:[0-9]+]] { 534; CGSCC-NEXT: [[TMP1:%.*]] = cmpxchg ptr [[P]], i32 0, i32 1 acquire monotonic, align 4 535; CGSCC-NEXT: ret void 536; 537 cmpxchg ptr %p, i32 0, i32 1 acquire monotonic 538 ret void 539} 540 541define void @test_cmpxchg_ptr(ptr %p, ptr %q) { 542; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) 543; TUNIT-LABEL: define {{[^@]+}}@test_cmpxchg_ptr 544; TUNIT-SAME: (ptr nofree noundef nonnull align 8 captures(none) dereferenceable(8) [[P:%.*]], ptr nofree [[Q:%.*]]) #[[ATTR8]] { 545; TUNIT-NEXT: [[TMP1:%.*]] = cmpxchg ptr [[P]], ptr null, ptr [[Q]] acquire monotonic, align 8 546; TUNIT-NEXT: ret void 547; 548; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) 549; CGSCC-LABEL: define {{[^@]+}}@test_cmpxchg_ptr 550; CGSCC-SAME: (ptr nofree noundef nonnull align 8 captures(none) dereferenceable(8) [[P:%.*]], ptr nofree [[Q:%.*]]) #[[ATTR11]] { 551; CGSCC-NEXT: [[TMP1:%.*]] = cmpxchg ptr [[P]], ptr null, ptr [[Q]] acquire monotonic, align 8 552; CGSCC-NEXT: ret void 553; 554 cmpxchg ptr %p, ptr null, ptr %q acquire monotonic 555 ret void 556} 557 558define void @test_atomicrmw(ptr %p) { 559; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) 560; TUNIT-LABEL: define {{[^@]+}}@test_atomicrmw 561; TUNIT-SAME: (ptr nofree noundef nonnull align 4 captures(none) dereferenceable(4) [[P:%.*]]) #[[ATTR8]] { 562; TUNIT-NEXT: [[TMP1:%.*]] = atomicrmw add ptr [[P]], i32 1 seq_cst, align 4 563; TUNIT-NEXT: ret void 564; 565; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) 566; CGSCC-LABEL: define {{[^@]+}}@test_atomicrmw 567; CGSCC-SAME: (ptr nofree noundef nonnull align 4 captures(none) dereferenceable(4) [[P:%.*]]) #[[ATTR11]] { 568; CGSCC-NEXT: [[TMP1:%.*]] = atomicrmw add ptr [[P]], i32 1 seq_cst, align 4 569; CGSCC-NEXT: ret void 570; 571 atomicrmw add ptr %p, i32 1 seq_cst 572 ret void 573} 574 575define void @test_volatile(ptr %x) { 576; TUNIT: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) 577; TUNIT-LABEL: define {{[^@]+}}@test_volatile 578; TUNIT-SAME: (ptr nofree align 4 [[X:%.*]]) #[[ATTR8]] { 579; TUNIT-NEXT: entry: 580; TUNIT-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[X]], i64 1 581; TUNIT-NEXT: store volatile i32 0, ptr [[GEP]], align 4 582; TUNIT-NEXT: ret void 583; 584; CGSCC: Function Attrs: mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) 585; CGSCC-LABEL: define {{[^@]+}}@test_volatile 586; CGSCC-SAME: (ptr nofree align 4 [[X:%.*]]) #[[ATTR11]] { 587; CGSCC-NEXT: entry: 588; CGSCC-NEXT: [[GEP:%.*]] = getelementptr i32, ptr [[X]], i64 1 589; CGSCC-NEXT: store volatile i32 0, ptr [[GEP]], align 4 590; CGSCC-NEXT: ret void 591; 592entry: 593 %gep = getelementptr i32, ptr %x, i64 1 594 store volatile i32 0, ptr %gep, align 4 595 ret void 596} 597 598define void @nocaptureLaunder(ptr %p) { 599; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite) 600; TUNIT-LABEL: define {{[^@]+}}@nocaptureLaunder 601; TUNIT-SAME: (ptr nofree captures(none) [[P:%.*]]) #[[ATTR9:[0-9]+]] { 602; TUNIT-NEXT: entry: 603; TUNIT-NEXT: [[B:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr nofree [[P]]) #[[ATTR21:[0-9]+]] 604; TUNIT-NEXT: store i8 42, ptr [[B]], align 1 605; TUNIT-NEXT: ret void 606; 607; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite) 608; CGSCC-LABEL: define {{[^@]+}}@nocaptureLaunder 609; CGSCC-SAME: (ptr nofree captures(none) [[P:%.*]]) #[[ATTR12:[0-9]+]] { 610; CGSCC-NEXT: entry: 611; CGSCC-NEXT: [[B:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr nofree [[P]]) #[[ATTR24:[0-9]+]] 612; CGSCC-NEXT: store i8 42, ptr [[B]], align 1 613; CGSCC-NEXT: ret void 614; 615entry: 616 %b = call ptr @llvm.launder.invariant.group.p0(ptr %p) 617 store i8 42, ptr %b 618 ret void 619} 620 621@g2 = global ptr null 622define void @captureLaunder(ptr %p) { 623; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn 624; TUNIT-LABEL: define {{[^@]+}}@captureLaunder 625; TUNIT-SAME: (ptr nofree [[P:%.*]]) #[[ATTR5]] { 626; TUNIT-NEXT: [[B:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr nofree [[P]]) #[[ATTR21]] 627; TUNIT-NEXT: store ptr [[B]], ptr @g2, align 8 628; TUNIT-NEXT: ret void 629; 630; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn 631; CGSCC-LABEL: define {{[^@]+}}@captureLaunder 632; CGSCC-SAME: (ptr nofree [[P:%.*]]) #[[ATTR7]] { 633; CGSCC-NEXT: [[B:%.*]] = call ptr @llvm.launder.invariant.group.p0(ptr nofree [[P]]) #[[ATTR24]] 634; CGSCC-NEXT: store ptr [[B]], ptr @g2, align 8 635; CGSCC-NEXT: ret void 636; 637 %b = call ptr @llvm.launder.invariant.group.p0(ptr %p) 638 store ptr %b, ptr @g2 639 ret void 640} 641 642define void @nocaptureStrip(ptr %p) { 643; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 644; TUNIT-LABEL: define {{[^@]+}}@nocaptureStrip 645; TUNIT-SAME: (ptr nofree writeonly captures(none) [[P:%.*]]) #[[ATTR10:[0-9]+]] { 646; TUNIT-NEXT: entry: 647; TUNIT-NEXT: [[B:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr noalias nofree readnone [[P]]) #[[ATTR22:[0-9]+]] 648; TUNIT-NEXT: store i8 42, ptr [[B]], align 1 649; TUNIT-NEXT: ret void 650; 651; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 652; CGSCC-LABEL: define {{[^@]+}}@nocaptureStrip 653; CGSCC-SAME: (ptr nofree writeonly captures(none) [[P:%.*]]) #[[ATTR13:[0-9]+]] { 654; CGSCC-NEXT: entry: 655; CGSCC-NEXT: [[B:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr noalias nofree readnone [[P]]) #[[ATTR21]] 656; CGSCC-NEXT: store i8 42, ptr [[B]], align 1 657; CGSCC-NEXT: ret void 658; 659entry: 660 %b = call ptr @llvm.strip.invariant.group.p0(ptr %p) 661 store i8 42, ptr %b 662 ret void 663} 664 665@g3 = global ptr null 666define void @captureStrip(ptr %p) { 667; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write) 668; TUNIT-LABEL: define {{[^@]+}}@captureStrip 669; TUNIT-SAME: (ptr nofree writeonly [[P:%.*]]) #[[ATTR1]] { 670; TUNIT-NEXT: [[B:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr noalias nofree readnone [[P]]) #[[ATTR22]] 671; TUNIT-NEXT: store ptr [[B]], ptr @g3, align 8 672; TUNIT-NEXT: ret void 673; 674; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write) 675; CGSCC-LABEL: define {{[^@]+}}@captureStrip 676; CGSCC-SAME: (ptr nofree writeonly [[P:%.*]]) #[[ATTR1]] { 677; CGSCC-NEXT: [[B:%.*]] = call ptr @llvm.strip.invariant.group.p0(ptr noalias nofree readnone [[P]]) #[[ATTR21]] 678; CGSCC-NEXT: store ptr [[B]], ptr @g3, align 8 679; CGSCC-NEXT: ret void 680; 681 %b = call ptr @llvm.strip.invariant.group.p0(ptr %p) 682 store ptr %b, ptr @g3 683 ret void 684} 685 686define i1 @captureICmp(ptr %x) { 687; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 688; CHECK-LABEL: define {{[^@]+}}@captureICmp 689; CHECK-SAME: (ptr nofree readnone [[X:%.*]]) #[[ATTR0]] { 690; CHECK-NEXT: [[TMP1:%.*]] = icmp eq ptr [[X]], null 691; CHECK-NEXT: ret i1 [[TMP1]] 692; 693 %1 = icmp eq ptr %x, null 694 ret i1 %1 695} 696 697define i1 @captureICmpRev(ptr %x) { 698; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 699; CHECK-LABEL: define {{[^@]+}}@captureICmpRev 700; CHECK-SAME: (ptr nofree readnone [[X:%.*]]) #[[ATTR0]] { 701; CHECK-NEXT: [[TMP1:%.*]] = icmp eq ptr null, [[X]] 702; CHECK-NEXT: ret i1 [[TMP1]] 703; 704 %1 = icmp eq ptr null, %x 705 ret i1 %1 706} 707 708define i1 @nocaptureInboundsGEPICmp(ptr %x) { 709; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 710; CHECK-LABEL: define {{[^@]+}}@nocaptureInboundsGEPICmp 711; CHECK-SAME: (ptr nofree readnone captures(none) [[X:%.*]]) #[[ATTR0]] { 712; CHECK-NEXT: ret i1 false 713; 714 %1 = getelementptr inbounds i32, ptr %x, i32 5 715 %2 = icmp eq ptr %1, null 716 ret i1 %2 717} 718 719define i1 @nocaptureInboundsGEPICmpRev(ptr %x) { 720; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 721; CHECK-LABEL: define {{[^@]+}}@nocaptureInboundsGEPICmpRev 722; CHECK-SAME: (ptr nofree readnone captures(none) [[X:%.*]]) #[[ATTR0]] { 723; CHECK-NEXT: ret i1 true 724; 725 %1 = getelementptr inbounds i32, ptr %x, i32 5 726 %2 = icmp ne ptr null, %1 727 ret i1 %2 728} 729 730define i1 @nocaptureDereferenceableOrNullICmp(ptr dereferenceable_or_null(4) %x) { 731; CHECK: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(none) 732; CHECK-LABEL: define {{[^@]+}}@nocaptureDereferenceableOrNullICmp 733; CHECK-SAME: (ptr nofree noundef readnone captures(none) dereferenceable_or_null(4) [[X:%.*]]) #[[ATTR0]] { 734; CHECK-NEXT: [[TMP1:%.*]] = icmp eq ptr [[X]], null 735; CHECK-NEXT: ret i1 [[TMP1]] 736; 737 %1 = icmp eq ptr %x, null 738 ret i1 %1 739} 740 741define i1 @captureDereferenceableOrNullICmp(ptr dereferenceable_or_null(4) %x) null_pointer_is_valid { 742; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(none) 743; TUNIT-LABEL: define {{[^@]+}}@captureDereferenceableOrNullICmp 744; TUNIT-SAME: (ptr nofree noundef readnone dereferenceable_or_null(4) [[X:%.*]]) #[[ATTR11:[0-9]+]] { 745; TUNIT-NEXT: [[TMP1:%.*]] = icmp eq ptr [[X]], null 746; TUNIT-NEXT: ret i1 [[TMP1]] 747; 748; CGSCC: Function Attrs: mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(none) 749; CGSCC-LABEL: define {{[^@]+}}@captureDereferenceableOrNullICmp 750; CGSCC-SAME: (ptr nofree noundef readnone dereferenceable_or_null(4) [[X:%.*]]) #[[ATTR14:[0-9]+]] { 751; CGSCC-NEXT: [[TMP1:%.*]] = icmp eq ptr [[X]], null 752; CGSCC-NEXT: ret i1 [[TMP1]] 753; 754 %1 = icmp eq ptr %x, null 755 ret i1 %1 756} 757 758declare void @unknown(ptr) 759; We know that 'null' in AS 0 does not alias anything and cannot be captured. Though the latter is not qurried -> derived atm. 760define void @test_callsite() { 761; CHECK-LABEL: define {{[^@]+}}@test_callsite() { 762; CHECK-NEXT: entry: 763; CHECK-NEXT: call void @unknown(ptr noundef align 4294967296 null) 764; CHECK-NEXT: ret void 765; 766entry: 767 call void @unknown(ptr null) 768 ret void 769} 770 771declare ptr @unknownpi8pi8(ptr,ptr returned) 772define ptr @test_returned1(ptr %A, ptr returned %B) nounwind readonly { 773; TUNIT: Function Attrs: nosync nounwind memory(read) 774; TUNIT-LABEL: define {{[^@]+}}@test_returned1 775; TUNIT-SAME: (ptr captures(none) [[A:%.*]], ptr returned [[B:%.*]]) #[[ATTR12:[0-9]+]] { 776; TUNIT-NEXT: entry: 777; TUNIT-NEXT: [[P:%.*]] = call ptr @unknownpi8pi8(ptr [[A]], ptr [[B]]) 778; TUNIT-NEXT: ret ptr [[P]] 779; 780; CGSCC: Function Attrs: nosync nounwind memory(read) 781; CGSCC-LABEL: define {{[^@]+}}@test_returned1 782; CGSCC-SAME: (ptr captures(none) [[A:%.*]], ptr returned [[B:%.*]]) #[[ATTR15:[0-9]+]] { 783; CGSCC-NEXT: entry: 784; CGSCC-NEXT: [[P:%.*]] = call ptr @unknownpi8pi8(ptr [[A]], ptr [[B]]) 785; CGSCC-NEXT: ret ptr [[P]] 786; 787entry: 788 %p = call ptr @unknownpi8pi8(ptr %A, ptr %B) 789 ret ptr %p 790} 791 792define ptr @test_returned2(ptr %A, ptr %B) { 793; TUNIT: Function Attrs: nosync nounwind memory(read) 794; TUNIT-LABEL: define {{[^@]+}}@test_returned2 795; TUNIT-SAME: (ptr readonly [[A:%.*]], ptr readonly [[B:%.*]]) #[[ATTR12]] { 796; TUNIT-NEXT: entry: 797; TUNIT-NEXT: [[P:%.*]] = call ptr @unknownpi8pi8(ptr readonly [[A]], ptr readonly [[B]]) #[[ATTR12]] 798; TUNIT-NEXT: ret ptr [[P]] 799; 800; CGSCC: Function Attrs: nosync nounwind memory(read) 801; CGSCC-LABEL: define {{[^@]+}}@test_returned2 802; CGSCC-SAME: (ptr readonly [[A:%.*]], ptr readonly [[B:%.*]]) #[[ATTR15]] { 803; CGSCC-NEXT: entry: 804; CGSCC-NEXT: [[P:%.*]] = call ptr @unknownpi8pi8(ptr readonly [[A]], ptr readonly [[B]]) #[[ATTR15]] 805; CGSCC-NEXT: ret ptr [[P]] 806; 807entry: 808 %p = call ptr @unknownpi8pi8(ptr %A, ptr %B) nounwind readonly 809 ret ptr %p 810} 811 812declare ptr @maybe_returned_ptr(ptr readonly %ptr) readonly nounwind willreturn 813declare i8 @maybe_returned_val(ptr %ptr) readonly nounwind willreturn 814declare void @val_use(i8 %ptr) readonly nounwind willreturn 815 816; FIXME: Both pointers should be nocapture 817define void @ptr_uses(ptr %ptr, ptr %wptr) { 818; TUNIT: Function Attrs: mustprogress nosync nounwind willreturn 819; TUNIT-LABEL: define {{[^@]+}}@ptr_uses 820; TUNIT-SAME: (ptr nofree [[PTR:%.*]], ptr nofree noundef nonnull writeonly captures(none) dereferenceable(1) [[WPTR:%.*]]) #[[ATTR14:[0-9]+]] { 821; TUNIT-NEXT: store i8 0, ptr [[WPTR]], align 1 822; TUNIT-NEXT: ret void 823; 824; CGSCC: Function Attrs: mustprogress nosync nounwind willreturn 825; CGSCC-LABEL: define {{[^@]+}}@ptr_uses 826; CGSCC-SAME: (ptr nofree [[PTR:%.*]], ptr nofree noundef nonnull writeonly captures(none) dereferenceable(1) [[WPTR:%.*]]) #[[ATTR17:[0-9]+]] { 827; CGSCC-NEXT: store i8 0, ptr [[WPTR]], align 1 828; CGSCC-NEXT: ret void 829; 830 %call_ptr = call ptr @maybe_returned_ptr(ptr %ptr) 831 %call_val = call i8 @maybe_returned_val(ptr %call_ptr) 832 call void @val_use(i8 %call_val) 833 store i8 0, ptr %wptr 834 ret void 835} 836 837declare ptr @llvm.launder.invariant.group.p0(ptr) 838declare ptr @llvm.strip.invariant.group.p0(ptr) 839;. 840; TUNIT: attributes #[[ATTR0]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) } 841; TUNIT: attributes #[[ATTR1]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(write) } 842; TUNIT: attributes #[[ATTR2]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(read) } 843; TUNIT: attributes #[[ATTR3:[0-9]+]] = { memory(read) } 844; TUNIT: attributes #[[ATTR4]] = { nosync memory(read) } 845; TUNIT: attributes #[[ATTR5]] = { mustprogress nofree norecurse nosync nounwind willreturn } 846; TUNIT: attributes #[[ATTR6]] = { nounwind memory(argmem: readwrite) } 847; TUNIT: attributes #[[ATTR7]] = { nofree nosync nounwind memory(write) } 848; TUNIT: attributes #[[ATTR8]] = { mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) } 849; TUNIT: attributes #[[ATTR9]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite) } 850; TUNIT: attributes #[[ATTR10]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) } 851; TUNIT: attributes #[[ATTR11]] = { mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(none) } 852; TUNIT: attributes #[[ATTR12]] = { nosync nounwind memory(read) } 853; TUNIT: attributes #[[ATTR13:[0-9]+]] = { nounwind willreturn memory(read) } 854; TUNIT: attributes #[[ATTR14]] = { mustprogress nosync nounwind willreturn } 855; TUNIT: attributes #[[ATTR15:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(inaccessiblemem: readwrite) } 856; TUNIT: attributes #[[ATTR16:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(none) } 857; TUNIT: attributes #[[ATTR17]] = { nofree nosync nounwind willreturn memory(write) } 858; TUNIT: attributes #[[ATTR18]] = { nofree nosync nounwind willreturn memory(none) } 859; TUNIT: attributes #[[ATTR19]] = { nofree nosync nounwind willreturn } 860; TUNIT: attributes #[[ATTR20]] = { nounwind } 861; TUNIT: attributes #[[ATTR21]] = { nofree willreturn } 862; TUNIT: attributes #[[ATTR22]] = { nofree nosync willreturn } 863;. 864; CGSCC: attributes #[[ATTR0]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(none) } 865; CGSCC: attributes #[[ATTR1]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(write) } 866; CGSCC: attributes #[[ATTR2]] = { mustprogress nofree nosync nounwind willreturn memory(write) } 867; CGSCC: attributes #[[ATTR3]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(read) } 868; CGSCC: attributes #[[ATTR4:[0-9]+]] = { memory(read) } 869; CGSCC: attributes #[[ATTR5]] = { nosync memory(read) } 870; CGSCC: attributes #[[ATTR6]] = { mustprogress nofree nosync nounwind willreturn memory(read) } 871; CGSCC: attributes #[[ATTR7]] = { mustprogress nofree norecurse nosync nounwind willreturn } 872; CGSCC: attributes #[[ATTR8]] = { mustprogress nofree nosync nounwind willreturn } 873; CGSCC: attributes #[[ATTR9]] = { nounwind memory(argmem: readwrite) } 874; CGSCC: attributes #[[ATTR10]] = { nofree nosync nounwind memory(write) } 875; CGSCC: attributes #[[ATTR11]] = { mustprogress nofree norecurse nounwind willreturn memory(argmem: readwrite) } 876; CGSCC: attributes #[[ATTR12]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite, inaccessiblemem: readwrite) } 877; CGSCC: attributes #[[ATTR13]] = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) } 878; CGSCC: attributes #[[ATTR14]] = { mustprogress nofree norecurse nosync nounwind null_pointer_is_valid willreturn memory(none) } 879; CGSCC: attributes #[[ATTR15]] = { nosync nounwind memory(read) } 880; CGSCC: attributes #[[ATTR16:[0-9]+]] = { nounwind willreturn memory(read) } 881; CGSCC: attributes #[[ATTR17]] = { mustprogress nosync nounwind willreturn } 882; CGSCC: attributes #[[ATTR18:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(inaccessiblemem: readwrite) } 883; CGSCC: attributes #[[ATTR19:[0-9]+]] = { nocallback nofree nosync nounwind speculatable willreturn memory(none) } 884; CGSCC: attributes #[[ATTR20]] = { nofree nounwind willreturn memory(write) } 885; CGSCC: attributes #[[ATTR21]] = { nofree nosync willreturn } 886; CGSCC: attributes #[[ATTR22]] = { nofree nounwind willreturn } 887; CGSCC: attributes #[[ATTR23]] = { nounwind } 888; CGSCC: attributes #[[ATTR24]] = { nofree willreturn } 889;. 890