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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -S -passes=loop-predication < %s 2>&1 | FileCheck %s3; RUN: opt -S -passes='require<scalar-evolution>,loop-mssa(loop-predication)' -verify-memoryssa < %s 2>&1 | FileCheck %s4 5declare void @llvm.experimental.guard(i1, ...)6 7define i32 @signed_loop_0_to_n_nested_0_to_l_inner_index_check(ptr %array, i32 %length, i32 %n, i32 %l) {8; CHECK-LABEL: @signed_loop_0_to_n_nested_0_to_l_inner_index_check(9; CHECK-NEXT: entry:10; CHECK-NEXT: [[TMP5:%.*]] = icmp sle i32 [[N:%.*]], 011; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[OUTER_LOOP_PREHEADER:%.*]]12; CHECK: outer.loop.preheader:13; CHECK-NEXT: br label [[OUTER_LOOP:%.*]]14; CHECK: outer.loop:15; CHECK-NEXT: [[OUTER_LOOP_ACC:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT:%.*]], [[OUTER_LOOP_INC:%.*]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]16; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[OUTER_LOOP_INC]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]17; CHECK-NEXT: [[TMP6:%.*]] = icmp sle i32 [[L:%.*]], 018; CHECK-NEXT: br i1 [[TMP6]], label [[OUTER_LOOP_INC]], label [[INNER_LOOP_PREHEADER:%.*]]19; CHECK: inner.loop.preheader:20; CHECK-NEXT: [[TMP0:%.*]] = icmp sle i32 [[L]], [[LENGTH:%.*]]21; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 0, [[LENGTH]]22; CHECK-NEXT: [[TMP2:%.*]] = and i1 [[TMP1]], [[TMP0]]23; CHECK-NEXT: [[TMP3:%.*]] = freeze i1 [[TMP2]]24; CHECK-NEXT: br label [[INNER_LOOP:%.*]]25; CHECK: inner.loop:26; CHECK-NEXT: [[INNER_LOOP_ACC:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT:%.*]], [[INNER_LOOP]] ], [ [[OUTER_LOOP_ACC]], [[INNER_LOOP_PREHEADER]] ]27; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_NEXT:%.*]], [[INNER_LOOP]] ], [ 0, [[INNER_LOOP_PREHEADER]] ]28; CHECK-NEXT: [[WITHIN_BOUNDS:%.*]] = icmp ult i32 [[J]], [[LENGTH]]29; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP3]], i32 9) [ "deopt"() ]30; CHECK-NEXT: call void @llvm.assume(i1 [[WITHIN_BOUNDS]])31; CHECK-NEXT: [[J_I64:%.*]] = zext i32 [[J]] to i6432; CHECK-NEXT: [[ARRAY_J_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i64 [[J_I64]]33; CHECK-NEXT: [[ARRAY_J:%.*]] = load i32, ptr [[ARRAY_J_PTR]], align 434; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT]] = add i32 [[INNER_LOOP_ACC]], [[ARRAY_J]]35; CHECK-NEXT: [[J_NEXT]] = add nsw i32 [[J]], 136; CHECK-NEXT: [[INNER_CONTINUE:%.*]] = icmp slt i32 [[J_NEXT]], [[L]]37; CHECK-NEXT: br i1 [[INNER_CONTINUE]], label [[INNER_LOOP]], label [[OUTER_LOOP_INC_LOOPEXIT:%.*]]38; CHECK: outer.loop.inc.loopexit:39; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT]], [[INNER_LOOP]] ]40; CHECK-NEXT: br label [[OUTER_LOOP_INC]]41; CHECK: outer.loop.inc:42; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT]] = phi i32 [ [[OUTER_LOOP_ACC]], [[OUTER_LOOP]] ], [ [[INNER_LOOP_ACC_NEXT_LCSSA]], [[OUTER_LOOP_INC_LOOPEXIT]] ]43; CHECK-NEXT: [[I_NEXT]] = add nsw i32 [[I]], 144; CHECK-NEXT: [[OUTER_CONTINUE:%.*]] = icmp slt i32 [[I_NEXT]], [[N]]45; CHECK-NEXT: br i1 [[OUTER_CONTINUE]], label [[OUTER_LOOP]], label [[EXIT_LOOPEXIT:%.*]]46; CHECK: exit.loopexit:47; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT]], [[OUTER_LOOP_INC]] ]48; CHECK-NEXT: br label [[EXIT]]49; CHECK: exit:50; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]51; CHECK-NEXT: ret i32 [[RESULT]]52;53entry:54 %tmp5 = icmp sle i32 %n, 055 br i1 %tmp5, label %exit, label %outer.loop.preheader56 57outer.loop.preheader:58 br label %outer.loop59 60outer.loop:61 %outer.loop.acc = phi i32 [ %outer.loop.acc.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]62 %i = phi i32 [ %i.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]63 %tmp6 = icmp sle i32 %l, 064 br i1 %tmp6, label %outer.loop.inc, label %inner.loop.preheader65 66inner.loop.preheader:67 br label %inner.loop68 69inner.loop:70 %inner.loop.acc = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %inner.loop.preheader ]71 %j = phi i32 [ %j.next, %inner.loop ], [ 0, %inner.loop.preheader ]72 73 %within.bounds = icmp ult i32 %j, %length74 call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]75 76 %j.i64 = zext i32 %j to i6477 %array.j.ptr = getelementptr inbounds i32, ptr %array, i64 %j.i6478 %array.j = load i32, ptr %array.j.ptr, align 479 %inner.loop.acc.next = add i32 %inner.loop.acc, %array.j80 81 %j.next = add nsw i32 %j, 182 %inner.continue = icmp slt i32 %j.next, %l83 br i1 %inner.continue, label %inner.loop, label %outer.loop.inc84 85outer.loop.inc:86 %outer.loop.acc.next = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %outer.loop ]87 %i.next = add nsw i32 %i, 188 %outer.continue = icmp slt i32 %i.next, %n89 br i1 %outer.continue, label %outer.loop, label %exit90 91exit:92 %result = phi i32 [ 0, %entry ], [ %outer.loop.acc.next, %outer.loop.inc ]93 ret i32 %result94}95 96define i32 @signed_loop_0_to_n_nested_0_to_l_outer_index_check(ptr %array, i32 %length, i32 %n, i32 %l) {97; CHECK-LABEL: @signed_loop_0_to_n_nested_0_to_l_outer_index_check(98; CHECK-NEXT: entry:99; CHECK-NEXT: [[TMP5:%.*]] = icmp sle i32 [[N:%.*]], 0100; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[OUTER_LOOP_PREHEADER:%.*]]101; CHECK: outer.loop.preheader:102; CHECK-NEXT: [[TMP0:%.*]] = icmp sle i32 [[N]], [[LENGTH:%.*]]103; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 0, [[LENGTH]]104; CHECK-NEXT: [[TMP2:%.*]] = and i1 [[TMP1]], [[TMP0]]105; CHECK-NEXT: [[TMP3:%.*]] = freeze i1 [[TMP2]]106; CHECK-NEXT: br label [[OUTER_LOOP:%.*]]107; CHECK: outer.loop:108; CHECK-NEXT: [[OUTER_LOOP_ACC:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT:%.*]], [[OUTER_LOOP_INC:%.*]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]109; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[OUTER_LOOP_INC]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]110; CHECK-NEXT: [[TMP6:%.*]] = icmp sle i32 [[L:%.*]], 0111; CHECK-NEXT: br i1 [[TMP6]], label [[OUTER_LOOP_INC]], label [[INNER_LOOP_PREHEADER:%.*]]112; CHECK: inner.loop.preheader:113; CHECK-NEXT: br label [[INNER_LOOP:%.*]]114; CHECK: inner.loop:115; CHECK-NEXT: [[INNER_LOOP_ACC:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT:%.*]], [[INNER_LOOP]] ], [ [[OUTER_LOOP_ACC]], [[INNER_LOOP_PREHEADER]] ]116; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_NEXT:%.*]], [[INNER_LOOP]] ], [ 0, [[INNER_LOOP_PREHEADER]] ]117; CHECK-NEXT: [[WITHIN_BOUNDS:%.*]] = icmp ult i32 [[I]], [[LENGTH]]118; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP3]], i32 9) [ "deopt"() ]119; CHECK-NEXT: call void @llvm.assume(i1 [[WITHIN_BOUNDS]])120; CHECK-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64121; CHECK-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i64 [[I_I64]]122; CHECK-NEXT: [[ARRAY_I:%.*]] = load i32, ptr [[ARRAY_I_PTR]], align 4123; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT]] = add i32 [[INNER_LOOP_ACC]], [[ARRAY_I]]124; CHECK-NEXT: [[J_NEXT]] = add nsw i32 [[J]], 1125; CHECK-NEXT: [[INNER_CONTINUE:%.*]] = icmp slt i32 [[J_NEXT]], [[L]]126; CHECK-NEXT: br i1 [[INNER_CONTINUE]], label [[INNER_LOOP]], label [[OUTER_LOOP_INC_LOOPEXIT:%.*]]127; CHECK: outer.loop.inc.loopexit:128; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT]], [[INNER_LOOP]] ]129; CHECK-NEXT: br label [[OUTER_LOOP_INC]]130; CHECK: outer.loop.inc:131; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT]] = phi i32 [ [[OUTER_LOOP_ACC]], [[OUTER_LOOP]] ], [ [[INNER_LOOP_ACC_NEXT_LCSSA]], [[OUTER_LOOP_INC_LOOPEXIT]] ]132; CHECK-NEXT: [[I_NEXT]] = add nsw i32 [[I]], 1133; CHECK-NEXT: [[OUTER_CONTINUE:%.*]] = icmp slt i32 [[I_NEXT]], [[N]]134; CHECK-NEXT: br i1 [[OUTER_CONTINUE]], label [[OUTER_LOOP]], label [[EXIT_LOOPEXIT:%.*]]135; CHECK: exit.loopexit:136; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT]], [[OUTER_LOOP_INC]] ]137; CHECK-NEXT: br label [[EXIT]]138; CHECK: exit:139; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]140; CHECK-NEXT: ret i32 [[RESULT]]141;142entry:143 %tmp5 = icmp sle i32 %n, 0144 br i1 %tmp5, label %exit, label %outer.loop.preheader145 146outer.loop.preheader:147 br label %outer.loop148 149outer.loop:150 %outer.loop.acc = phi i32 [ %outer.loop.acc.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]151 %i = phi i32 [ %i.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]152 %tmp6 = icmp sle i32 %l, 0153 br i1 %tmp6, label %outer.loop.inc, label %inner.loop.preheader154 155inner.loop.preheader:156 br label %inner.loop157 158inner.loop:159 160 %inner.loop.acc = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %inner.loop.preheader ]161 %j = phi i32 [ %j.next, %inner.loop ], [ 0, %inner.loop.preheader ]162 163 %within.bounds = icmp ult i32 %i, %length164 call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]165 166 %i.i64 = zext i32 %i to i64167 %array.i.ptr = getelementptr inbounds i32, ptr %array, i64 %i.i64168 %array.i = load i32, ptr %array.i.ptr, align 4169 %inner.loop.acc.next = add i32 %inner.loop.acc, %array.i170 171 %j.next = add nsw i32 %j, 1172 %inner.continue = icmp slt i32 %j.next, %l173 br i1 %inner.continue, label %inner.loop, label %outer.loop.inc174 175outer.loop.inc:176 %outer.loop.acc.next = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %outer.loop ]177 %i.next = add nsw i32 %i, 1178 %outer.continue = icmp slt i32 %i.next, %n179 br i1 %outer.continue, label %outer.loop, label %exit180 181exit:182 %result = phi i32 [ 0, %entry ], [ %outer.loop.acc.next, %outer.loop.inc ]183 ret i32 %result184}185 186define i32 @signed_loop_0_to_n_nested_i_to_l_inner_index_check(ptr %array, i32 %length, i32 %n, i32 %l) {187; CHECK-LABEL: @signed_loop_0_to_n_nested_i_to_l_inner_index_check(188; CHECK-NEXT: entry:189; CHECK-NEXT: [[TMP5:%.*]] = icmp sle i32 [[N:%.*]], 0190; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[OUTER_LOOP_PREHEADER:%.*]]191; CHECK: outer.loop.preheader:192; CHECK-NEXT: br label [[OUTER_LOOP:%.*]]193; CHECK: outer.loop:194; CHECK-NEXT: [[OUTER_LOOP_ACC:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT:%.*]], [[OUTER_LOOP_INC:%.*]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]195; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[OUTER_LOOP_INC]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]196; CHECK-NEXT: [[TMP6:%.*]] = icmp sle i32 [[L:%.*]], 0197; CHECK-NEXT: br i1 [[TMP6]], label [[OUTER_LOOP_INC]], label [[INNER_LOOP_PREHEADER:%.*]]198; CHECK: inner.loop.preheader:199; CHECK-NEXT: [[TMP0:%.*]] = icmp sle i32 [[L]], [[LENGTH:%.*]]200; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 [[I]], [[LENGTH]]201; CHECK-NEXT: [[TMP2:%.*]] = and i1 [[TMP1]], [[TMP0]]202; CHECK-NEXT: [[TMP3:%.*]] = freeze i1 [[TMP2]]203; CHECK-NEXT: br label [[INNER_LOOP:%.*]]204; CHECK: inner.loop:205; CHECK-NEXT: [[INNER_LOOP_ACC:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT:%.*]], [[INNER_LOOP]] ], [ [[OUTER_LOOP_ACC]], [[INNER_LOOP_PREHEADER]] ]206; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_NEXT:%.*]], [[INNER_LOOP]] ], [ [[I]], [[INNER_LOOP_PREHEADER]] ]207; CHECK-NEXT: [[WITHIN_BOUNDS:%.*]] = icmp ult i32 [[J]], [[LENGTH]]208; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP3]], i32 9) [ "deopt"() ]209; CHECK-NEXT: call void @llvm.assume(i1 [[WITHIN_BOUNDS]])210; CHECK-NEXT: [[J_I64:%.*]] = zext i32 [[J]] to i64211; CHECK-NEXT: [[ARRAY_J_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i64 [[J_I64]]212; CHECK-NEXT: [[ARRAY_J:%.*]] = load i32, ptr [[ARRAY_J_PTR]], align 4213; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT]] = add i32 [[INNER_LOOP_ACC]], [[ARRAY_J]]214; CHECK-NEXT: [[J_NEXT]] = add nsw i32 [[J]], 1215; CHECK-NEXT: [[INNER_CONTINUE:%.*]] = icmp slt i32 [[J_NEXT]], [[L]]216; CHECK-NEXT: br i1 [[INNER_CONTINUE]], label [[INNER_LOOP]], label [[OUTER_LOOP_INC_LOOPEXIT:%.*]]217; CHECK: outer.loop.inc.loopexit:218; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT]], [[INNER_LOOP]] ]219; CHECK-NEXT: br label [[OUTER_LOOP_INC]]220; CHECK: outer.loop.inc:221; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT]] = phi i32 [ [[OUTER_LOOP_ACC]], [[OUTER_LOOP]] ], [ [[INNER_LOOP_ACC_NEXT_LCSSA]], [[OUTER_LOOP_INC_LOOPEXIT]] ]222; CHECK-NEXT: [[I_NEXT]] = add nsw i32 [[I]], 1223; CHECK-NEXT: [[OUTER_CONTINUE:%.*]] = icmp slt i32 [[I_NEXT]], [[N]]224; CHECK-NEXT: br i1 [[OUTER_CONTINUE]], label [[OUTER_LOOP]], label [[EXIT_LOOPEXIT:%.*]]225; CHECK: exit.loopexit:226; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT]], [[OUTER_LOOP_INC]] ]227; CHECK-NEXT: br label [[EXIT]]228; CHECK: exit:229; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]230; CHECK-NEXT: ret i32 [[RESULT]]231;232entry:233 %tmp5 = icmp sle i32 %n, 0234 br i1 %tmp5, label %exit, label %outer.loop.preheader235 236outer.loop.preheader:237 br label %outer.loop238 239outer.loop:240 %outer.loop.acc = phi i32 [ %outer.loop.acc.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]241 %i = phi i32 [ %i.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]242 %tmp6 = icmp sle i32 %l, 0243 br i1 %tmp6, label %outer.loop.inc, label %inner.loop.preheader244 245inner.loop.preheader:246 br label %inner.loop247 248inner.loop:249 %inner.loop.acc = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %inner.loop.preheader ]250 %j = phi i32 [ %j.next, %inner.loop ], [ %i, %inner.loop.preheader ]251 252 %within.bounds = icmp ult i32 %j, %length253 call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]254 255 %j.i64 = zext i32 %j to i64256 %array.j.ptr = getelementptr inbounds i32, ptr %array, i64 %j.i64257 %array.j = load i32, ptr %array.j.ptr, align 4258 %inner.loop.acc.next = add i32 %inner.loop.acc, %array.j259 260 %j.next = add nsw i32 %j, 1261 %inner.continue = icmp slt i32 %j.next, %l262 br i1 %inner.continue, label %inner.loop, label %outer.loop.inc263 264outer.loop.inc:265 %outer.loop.acc.next = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %outer.loop ]266 %i.next = add nsw i32 %i, 1267 %outer.continue = icmp slt i32 %i.next, %n268 br i1 %outer.continue, label %outer.loop, label %exit269 270exit:271 %result = phi i32 [ 0, %entry ], [ %outer.loop.acc.next, %outer.loop.inc ]272 ret i32 %result273}274 275define i32 @cant_expand_guard_check_start(ptr %array, i32 %length, i32 %n, i32 %l, i32 %maybezero) {276; CHECK-LABEL: @cant_expand_guard_check_start(277; CHECK-NEXT: entry:278; CHECK-NEXT: [[TMP5:%.*]] = icmp sle i32 [[N:%.*]], 0279; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[OUTER_LOOP_PREHEADER:%.*]]280; CHECK: outer.loop.preheader:281; CHECK-NEXT: br label [[OUTER_LOOP:%.*]]282; CHECK: outer.loop:283; CHECK-NEXT: [[OUTER_LOOP_ACC:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT:%.*]], [[OUTER_LOOP_INC:%.*]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]284; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[OUTER_LOOP_INC]] ], [ 0, [[OUTER_LOOP_PREHEADER]] ]285; CHECK-NEXT: [[TMP6:%.*]] = icmp sle i32 [[L:%.*]], 0286; CHECK-NEXT: [[DIV:%.*]] = udiv i32 [[I]], [[MAYBEZERO:%.*]]287; CHECK-NEXT: br i1 [[TMP6]], label [[OUTER_LOOP_INC]], label [[INNER_LOOP_PREHEADER:%.*]]288; CHECK: inner.loop.preheader:289; CHECK-NEXT: br label [[INNER_LOOP:%.*]]290; CHECK: inner.loop:291; CHECK-NEXT: [[INNER_LOOP_ACC:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT:%.*]], [[INNER_LOOP]] ], [ [[OUTER_LOOP_ACC]], [[INNER_LOOP_PREHEADER]] ]292; CHECK-NEXT: [[J:%.*]] = phi i32 [ [[J_NEXT:%.*]], [[INNER_LOOP]] ], [ [[DIV]], [[INNER_LOOP_PREHEADER]] ]293; CHECK-NEXT: [[WITHIN_BOUNDS:%.*]] = icmp ult i32 [[J]], [[LENGTH:%.*]]294; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[WITHIN_BOUNDS]], i32 9) [ "deopt"() ]295; CHECK-NEXT: [[J_I64:%.*]] = zext i32 [[J]] to i64296; CHECK-NEXT: [[ARRAY_J_PTR:%.*]] = getelementptr inbounds i32, ptr [[ARRAY:%.*]], i64 [[J_I64]]297; CHECK-NEXT: [[ARRAY_J:%.*]] = load i32, ptr [[ARRAY_J_PTR]], align 4298; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT]] = add i32 [[INNER_LOOP_ACC]], [[ARRAY_J]]299; CHECK-NEXT: [[J_NEXT]] = add nsw i32 [[J]], 1300; CHECK-NEXT: [[INNER_CONTINUE:%.*]] = icmp slt i32 [[J_NEXT]], [[L]]301; CHECK-NEXT: br i1 [[INNER_CONTINUE]], label [[INNER_LOOP]], label [[OUTER_LOOP_INC_LOOPEXIT:%.*]]302; CHECK: outer.loop.inc.loopexit:303; CHECK-NEXT: [[INNER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[INNER_LOOP_ACC_NEXT]], [[INNER_LOOP]] ]304; CHECK-NEXT: br label [[OUTER_LOOP_INC]]305; CHECK: outer.loop.inc:306; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT]] = phi i32 [ [[OUTER_LOOP_ACC]], [[OUTER_LOOP]] ], [ [[INNER_LOOP_ACC_NEXT_LCSSA]], [[OUTER_LOOP_INC_LOOPEXIT]] ]307; CHECK-NEXT: [[I_NEXT]] = add nsw i32 [[I]], 1308; CHECK-NEXT: [[OUTER_CONTINUE:%.*]] = icmp slt i32 [[I_NEXT]], [[N]]309; CHECK-NEXT: br i1 [[OUTER_CONTINUE]], label [[OUTER_LOOP]], label [[EXIT_LOOPEXIT:%.*]]310; CHECK: exit.loopexit:311; CHECK-NEXT: [[OUTER_LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[OUTER_LOOP_ACC_NEXT]], [[OUTER_LOOP_INC]] ]312; CHECK-NEXT: br label [[EXIT]]313; CHECK: exit:314; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]315; CHECK-NEXT: ret i32 [[RESULT]]316;317entry:318 %tmp5 = icmp sle i32 %n, 0319 br i1 %tmp5, label %exit, label %outer.loop.preheader320 321outer.loop.preheader:322 br label %outer.loop323 324outer.loop:325 %outer.loop.acc = phi i32 [ %outer.loop.acc.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]326 %i = phi i32 [ %i.next, %outer.loop.inc ], [ 0, %outer.loop.preheader ]327 %tmp6 = icmp sle i32 %l, 0328 %div = udiv i32 %i, %maybezero329 br i1 %tmp6, label %outer.loop.inc, label %inner.loop.preheader330 331inner.loop.preheader:332 br label %inner.loop333 334inner.loop:335 %inner.loop.acc = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %inner.loop.preheader ]336 %j = phi i32 [ %j.next, %inner.loop ], [ %div, %inner.loop.preheader ]337 338 %within.bounds = icmp ult i32 %j, %length339 call void (i1, ...) @llvm.experimental.guard(i1 %within.bounds, i32 9) [ "deopt"() ]340 341 %j.i64 = zext i32 %j to i64342 %array.j.ptr = getelementptr inbounds i32, ptr %array, i64 %j.i64343 %array.j = load i32, ptr %array.j.ptr, align 4344 %inner.loop.acc.next = add i32 %inner.loop.acc, %array.j345 346 %j.next = add nsw i32 %j, 1347 %inner.continue = icmp slt i32 %j.next, %l348 br i1 %inner.continue, label %inner.loop, label %outer.loop.inc349 350outer.loop.inc:351 %outer.loop.acc.next = phi i32 [ %inner.loop.acc.next, %inner.loop ], [ %outer.loop.acc, %outer.loop ]352 %i.next = add nsw i32 %i, 1353 %outer.continue = icmp slt i32 %i.next, %n354 br i1 %outer.continue, label %outer.loop, label %exit355 356exit:357 %result = phi i32 [ 0, %entry ], [ %outer.loop.acc.next, %outer.loop.inc ]358 ret i32 %result359}360