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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 22; RUN: opt -passes=instcombine -S < %s | FileCheck %s3 4target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128-p7:32:32"5target triple = "x86_64-apple-macosx10.14.0"6 7; Function Attrs: nounwind ssp uwtable8define i64 @weird_identity_but_ok(i64 %sz) {9; CHECK-LABEL: define i64 @weird_identity_but_ok10; CHECK-SAME: (i64 [[SZ:%.*]]) {11; CHECK-NEXT: entry:12; CHECK-NEXT: [[TMP0:%.*]] = icmp ne i64 [[SZ]], -113; CHECK-NEXT: call void @llvm.assume(i1 [[TMP0]])14; CHECK-NEXT: ret i64 [[SZ]]15;16entry:17 %call = tail call ptr @malloc(i64 %sz)18 %calc_size = tail call i64 @llvm.objectsize.i64.p0(ptr %call, i1 false, i1 true, i1 true)19 tail call void @free(ptr %call)20 ret i64 %calc_size21}22 23define i64 @phis_are_neat(i1 %which) {24; CHECK-LABEL: define i64 @phis_are_neat25; CHECK-SAME: (i1 [[WHICH:%.*]]) {26; CHECK-NEXT: entry:27; CHECK-NEXT: br i1 [[WHICH]], label [[FIRST_LABEL:%.*]], label [[SECOND_LABEL:%.*]]28; CHECK: first_label:29; CHECK-NEXT: br label [[JOIN_LABEL:%.*]]30; CHECK: second_label:31; CHECK-NEXT: br label [[JOIN_LABEL]]32; CHECK: join_label:33; CHECK-NEXT: [[TMP0:%.*]] = phi i64 [ 10, [[FIRST_LABEL]] ], [ 30, [[SECOND_LABEL]] ]34; CHECK-NEXT: ret i64 [[TMP0]]35;36entry:37 br i1 %which, label %first_label, label %second_label38 39first_label:40 %first_call = call ptr @malloc(i64 10)41 br label %join_label42 43second_label:44 %second_call = call ptr @malloc(i64 30)45 br label %join_label46 47join_label:48 %joined = phi ptr [ %first_call, %first_label ], [ %second_call, %second_label ]49 %calc_size = tail call i64 @llvm.objectsize.i64.p0(ptr %joined, i1 false, i1 true, i1 true)50 ret i64 %calc_size51}52 53define i64 @internal_pointer(i64 %sz) {54; CHECK-LABEL: define i64 @internal_pointer55; CHECK-SAME: (i64 [[SZ:%.*]]) {56; CHECK-NEXT: entry:57; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.usub.sat.i64(i64 [[SZ]], i64 2)58; CHECK-NEXT: ret i64 [[TMP0]]59;60entry:61 %ptr = call ptr @malloc(i64 %sz)62 %ptr2 = getelementptr inbounds i8, ptr %ptr, i32 263 %calc_size = call i64 @llvm.objectsize.i64.p0(ptr %ptr2, i1 false, i1 true, i1 true)64 ret i64 %calc_size65}66 67define i64 @uses_nullptr_no_fold() {68; CHECK-LABEL: define i64 @uses_nullptr_no_fold() {69; CHECK-NEXT: entry:70; CHECK-NEXT: [[RES:%.*]] = call i64 @llvm.objectsize.i64.p0(ptr null, i1 false, i1 true, i1 true)71; CHECK-NEXT: ret i64 [[RES]]72;73entry:74 %res = call i64 @llvm.objectsize.i64.p0(ptr null, i1 false, i1 true, i1 true)75 ret i64 %res76}77 78define i64 @uses_nullptr_fold() {79; CHECK-LABEL: define i64 @uses_nullptr_fold() {80; CHECK-NEXT: entry:81; CHECK-NEXT: ret i64 082;83entry:84 ; NOTE: the third parameter to this call is false, unlike above.85 %res = call i64 @llvm.objectsize.i64.p0(ptr null, i1 false, i1 false, i1 true)86 ret i64 %res87}88 89@d = common global i8 0, align 190@c = common global i32 0, align 491 92; Function Attrs: nounwind93define void @f() {94; CHECK-LABEL: define void @f() {95; CHECK-NEXT: entry:96; CHECK-NEXT: [[DOTPR:%.*]] = load i32, ptr @c, align 497; CHECK-NEXT: [[TOBOOL4:%.*]] = icmp eq i32 [[DOTPR]], 098; CHECK-NEXT: br i1 [[TOBOOL4]], label [[FOR_END:%.*]], label [[FOR_BODY:%.*]]99; CHECK: for.body:100; CHECK-NEXT: [[DP_05:%.*]] = phi ptr [ [[ADD_PTR:%.*]], [[FOR_BODY]] ], [ @d, [[ENTRY:%.*]] ]101; CHECK-NEXT: [[TMP0:%.*]] = tail call i64 @llvm.objectsize.i64.p0(ptr [[DP_05]], i1 false, i1 true, i1 true)102; CHECK-NEXT: [[CONV:%.*]] = trunc i64 [[TMP0]] to i32103; CHECK-NEXT: tail call void @bury(i32 [[CONV]])104; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr @c, align 4105; CHECK-NEXT: [[IDX_EXT:%.*]] = sext i32 [[TMP1]] to i64106; CHECK-NEXT: [[ADD_PTR]] = getelementptr inbounds i8, ptr [[DP_05]], i64 [[IDX_EXT]]107; CHECK-NEXT: [[ADD:%.*]] = shl nsw i32 [[TMP1]], 1108; CHECK-NEXT: store i32 [[ADD]], ptr @c, align 4109; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[TMP1]], 0110; CHECK-NEXT: br i1 [[TOBOOL]], label [[FOR_END]], label [[FOR_BODY]]111; CHECK: for.end:112; CHECK-NEXT: ret void113;114entry:115 %.pr = load i32, ptr @c, align 4116 %tobool4 = icmp eq i32 %.pr, 0117 br i1 %tobool4, label %for.end, label %for.body118 119for.body: ; preds = %entry, %for.body120 %dp.05 = phi ptr [ %add.ptr, %for.body ], [ @d, %entry ]121 %0 = tail call i64 @llvm.objectsize.i64.p0(ptr %dp.05, i1 false, i1 true, i1 true)122 %conv = trunc i64 %0 to i32123 tail call void @bury(i32 %conv) #3124 %1 = load i32, ptr @c, align 4125 %idx.ext = sext i32 %1 to i64126 %add.ptr.offs = add i64 %idx.ext, 0127 %2 = add i64 undef, %add.ptr.offs128 %add.ptr = getelementptr inbounds i8, ptr %dp.05, i64 %idx.ext129 %add = shl nsw i32 %1, 1130 store i32 %add, ptr @c, align 4131 %tobool = icmp eq i32 %1, 0132 br i1 %tobool, label %for.end, label %for.body133 134for.end: ; preds = %for.body, %entry135 ret void136}137 138define void @bdos_cmpm1(i64 %alloc) {139; CHECK-LABEL: define void @bdos_cmpm1140; CHECK-SAME: (i64 [[ALLOC:%.*]]) {141; CHECK-NEXT: entry:142; CHECK-NEXT: [[OBJ:%.*]] = call ptr @malloc(i64 [[ALLOC]])143; CHECK-NEXT: [[TMP0:%.*]] = icmp ne i64 [[ALLOC]], -1144; CHECK-NEXT: call void @llvm.assume(i1 [[TMP0]])145; CHECK-NEXT: br i1 false, label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]146; CHECK: if.then:147; CHECK-NEXT: call void @fortified_chk(ptr [[OBJ]], i64 [[ALLOC]])148; CHECK-NEXT: br label [[IF_END:%.*]]149; CHECK: if.else:150; CHECK-NEXT: br label [[IF_END]]151; CHECK: if.end:152; CHECK-NEXT: ret void153;154entry:155 %obj = call ptr @malloc(i64 %alloc)156 %objsize = call i64 @llvm.objectsize.i64.p0(ptr %obj, i1 0, i1 0, i1 1)157 %cmp.not = icmp eq i64 %objsize, -1158 br i1 %cmp.not, label %if.else, label %if.then159 160if.then:161 call void @fortified_chk(ptr %obj, i64 %objsize)162 br label %if.end163 164if.else:165 call void @unfortified(ptr %obj, i64 %objsize)166 br label %if.end167 168if.end: ; preds = %if.else, %if.then169 ret void170}171 172define void @bdos_cmpm1_expr(i64 %alloc, i64 %part) {173; CHECK-LABEL: define void @bdos_cmpm1_expr174; CHECK-SAME: (i64 [[ALLOC:%.*]], i64 [[PART:%.*]]) {175; CHECK-NEXT: entry:176; CHECK-NEXT: [[SZ:%.*]] = udiv i64 [[ALLOC]], [[PART]]177; CHECK-NEXT: [[OBJ:%.*]] = call ptr @malloc(i64 [[SZ]])178; CHECK-NEXT: [[TMP0:%.*]] = icmp ne i64 [[SZ]], -1179; CHECK-NEXT: call void @llvm.assume(i1 [[TMP0]])180; CHECK-NEXT: br i1 false, label [[IF_ELSE:%.*]], label [[IF_THEN:%.*]]181; CHECK: if.then:182; CHECK-NEXT: call void @fortified_chk(ptr [[OBJ]], i64 [[SZ]])183; CHECK-NEXT: br label [[IF_END:%.*]]184; CHECK: if.else:185; CHECK-NEXT: br label [[IF_END]]186; CHECK: if.end:187; CHECK-NEXT: ret void188;189entry:190 %sz = udiv i64 %alloc, %part191 %obj = call ptr @malloc(i64 %sz)192 %objsize = call i64 @llvm.objectsize.i64.p0(ptr %obj, i1 0, i1 0, i1 1)193 %cmp.not = icmp eq i64 %objsize, -1194 br i1 %cmp.not, label %if.else, label %if.then195 196if.then:197 call void @fortified_chk(ptr %obj, i64 %objsize)198 br label %if.end199 200if.else:201 call void @unfortified(ptr %obj, i64 %objsize)202 br label %if.end203 204if.end: ; preds = %if.else, %if.then205 ret void206}207 208@p7 = internal addrspace(7) global i8 0209 210; Gracefully handle AS cast when the address spaces have different pointer widths.211define i64 @as_cast(i1 %c) {212; CHECK-LABEL: define i64 @as_cast213; CHECK-SAME: (i1 [[C:%.*]]) {214; CHECK-NEXT: entry:215; CHECK-NEXT: [[TMP0:%.*]] = select i1 [[C]], i64 64, i64 0216; CHECK-NEXT: ret i64 [[TMP0]]217;218entry:219 %p0 = tail call ptr @malloc(i64 64)220 %gep = getelementptr i8, ptr addrspace(7) @p7, i32 1221 %as = addrspacecast ptr addrspace(7) %gep to ptr222 %select = select i1 %c, ptr %p0, ptr %as223 %calc_size = tail call i64 @llvm.objectsize.i64.p0(ptr %select, i1 false, i1 true, i1 true)224 ret i64 %calc_size225}226 227define i64 @constexpr_as_cast(i1 %c) {228; CHECK-LABEL: define i64 @constexpr_as_cast229; CHECK-SAME: (i1 [[C:%.*]]) {230; CHECK-NEXT: entry:231; CHECK-NEXT: [[TMP0:%.*]] = select i1 [[C]], i64 64, i64 0232; CHECK-NEXT: ret i64 [[TMP0]]233;234entry:235 %p0 = tail call ptr @malloc(i64 64)236 %select = select i1 %c, ptr %p0, ptr addrspacecast (ptr addrspace(7) getelementptr (i8, ptr addrspace(7) @p7, i32 1) to ptr)237 %calc_size = tail call i64 @llvm.objectsize.i64.p0(ptr %select, i1 false, i1 true, i1 true)238 ret i64 %calc_size239}240 241declare void @bury(i32) local_unnamed_addr #2242 243; Function Attrs: nounwind allocsize(0)244declare ptr @malloc(i64) nounwind allocsize(0) allockind("alloc,uninitialized") "alloc-family"="malloc"245 246declare ptr @get_unknown_buffer()247 248; Function Attrs: nounwind249declare void @free(ptr nocapture) nounwind allockind("free") "alloc-family"="malloc"250 251; Function Attrs: nounwind readnone speculatable252declare i64 @llvm.objectsize.i64.p0(ptr, i1, i1, i1)253 254declare void @fortified_chk(ptr, i64)255 256declare void @unfortified(ptr, i64)257