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1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py2; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-max-iterations=0 -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"5target triple = "x86_64-unknown-linux-gnu"6 7@A = weak global [1000 x i32] zeroinitializer, align 328 9define void @PR1101(i32 %N) {10; CHECK-LABEL: 'PR1101'11; CHECK-NEXT: Determining loop execution counts for: @PR110112; CHECK-NEXT: Loop %bb3: backedge-taken count is i32 1000013; CHECK-NEXT: Loop %bb3: constant max backedge-taken count is i32 1000014; CHECK-NEXT: Loop %bb3: symbolic max backedge-taken count is i32 1000015; CHECK-NEXT: Loop %bb3: Trip multiple is 1000116;17entry:18 br label %bb319 20bb: ; preds = %bb321 %tmp = getelementptr [1000 x i32], ptr @A, i32 0, i32 %i.0 ; <ptr> [#uses=1]22 store i32 123, ptr %tmp23 %tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1]24 br label %bb325 26bb3: ; preds = %bb, %entry27 %i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3]28 %tmp3 = icmp sle i32 %i.0, 9999 ; <i1> [#uses=1]29 br i1 %tmp3, label %bb, label %bb530 31bb5: ; preds = %bb332 br label %return33 34return: ; preds = %bb535 ret void36}37 38define i32 @PR22795() {39; CHECK-LABEL: 'PR22795'40; CHECK-NEXT: Determining loop execution counts for: @PR2279541; CHECK-NEXT: Loop %preheader: backedge-taken count is i64 742; CHECK-NEXT: Loop %preheader: constant max backedge-taken count is i64 743; CHECK-NEXT: Loop %preheader: symbolic max backedge-taken count is i64 744; CHECK-NEXT: Loop %preheader: Trip multiple is 845;46entry:47 %bins = alloca [16 x i64], align 1648 call void @llvm.memset.p0.i64(ptr align 16 %bins, i8 0, i64 128, i1 false)49 br label %preheader50 51preheader: ; preds = %for.inc.1, %entry52 %v11 = phi i64 [ 0, %entry ], [ %next12.1, %for.inc.1 ]53 %iv = phi i32 [ -1, %entry ], [ %next.1, %for.inc.1 ]54 %cmp = icmp sgt i64 %v11, 055 br i1 %cmp, label %for.body, label %for.inc56 57for.body: ; preds = %preheader58 %zext = zext i32 %iv to i6459 %arrayidx = getelementptr [16 x i64], ptr %bins, i64 0, i64 %v1160 %loaded = load i64, ptr %arrayidx, align 861 %add = add i64 %loaded, 162 %add2 = add i64 %add, %zext63 store i64 %add2, ptr %arrayidx, align 864 br label %for.inc65 66for.inc: ; preds = %for.body, %preheader67 %next12 = add nuw nsw i64 %v11, 168 %next = add nsw i32 %iv, 169 br i1 true, label %for.body.1, label %for.inc.170 71end: ; preds = %for.inc.172 %arrayidx8 = getelementptr [16 x i64], ptr %bins, i64 0, i64 273 %load = load i64, ptr %arrayidx8, align 1674 %shr4 = lshr i64 %load, 3275 %conv = trunc i64 %shr4 to i3276 ret i32 %conv77 78for.body.1: ; preds = %for.inc79 %zext.1 = zext i32 %next to i6480 %arrayidx.1 = getelementptr [16 x i64], ptr %bins, i64 0, i64 %next1281 %loaded.1 = load i64, ptr %arrayidx.1, align 882 %add.1 = add i64 %loaded.1, 183 %add2.1 = add i64 %add.1, %zext.184 store i64 %add2.1, ptr %arrayidx.1, align 885 br label %for.inc.186 87for.inc.1: ; preds = %for.body.1, %for.inc88 %next12.1 = add nuw nsw i64 %next12, 189 %next.1 = add nuw nsw i32 %next, 190 %exitcond.1 = icmp eq i64 %next12.1, 1691 br i1 %exitcond.1, label %end, label %preheader92}93 94; Function Attrs: nounwind95declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) #096 97declare void @may_exit() nounwind98 99define void @pr28012(i32 %n) {100; CHECK-LABEL: 'pr28012'101; CHECK-NEXT: Determining loop execution counts for: @pr28012102; CHECK-NEXT: Loop %loop: backedge-taken count is i32 -1431655751103; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i32 -1431655751104; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is i32 -1431655751105; CHECK-NEXT: Loop %loop: Trip multiple is 2863311546106;107entry:108 br label %loop109 110loop:111 %iv = phi i32 [ 0, %entry ], [ %iv.inc, %loop ]112 %iv.inc = add nsw i32 %iv, 3113 call void @may_exit()114 %becond = icmp ne i32 %iv.inc, 46115 br i1 %becond, label %loop, label %leave116 117leave:118 ret void119}120 121define void @non_zero_from_loop_guard(i16 %n) {122; CHECK-LABEL: 'non_zero_from_loop_guard'123; CHECK-NEXT: Determining loop execution counts for: @non_zero_from_loop_guard124; CHECK-NEXT: Loop %loop: backedge-taken count is (-1 + (%n /u 2))<nsw>125; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i16 32766126; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is (-1 + (%n /u 2))<nsw>127; CHECK-NEXT: Loop %loop: Trip multiple is 1128;129entry:130 %shr = lshr i16 %n, 1131 %precond = icmp ult i16 %n, 2132 br i1 %precond, label %exit, label %loop133 134loop:135 %iv = phi i16 [ %inc, %loop ], [ 0, %entry ]136 %inc = add nuw nsw i16 %iv, 1137 %cmp = icmp ult i16 %inc, %shr138 br i1 %cmp, label %loop, label %exit139 140exit:141 ret void142}143 144define void @dual_sext_ne_with_slt_guard(i8 %s, i8 %n) {145; CHECK-LABEL: 'dual_sext_ne_with_slt_guard'146; CHECK-NEXT: Determining loop execution counts for: @dual_sext_ne_with_slt_guard147; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + (sext i8 %n to i64) + (-1 * (sext i8 %s to i64))<nsw>)148; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i64 -2149; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + (sext i8 %n to i64) + (-1 * (sext i8 %s to i64))<nsw>)150; CHECK-NEXT: Loop %for.body: Trip multiple is 1151;152entry:153 %cmp4 = icmp slt i8 %s, %n154 br i1 %cmp4, label %for.body.preheader, label %exit155 156for.body.preheader:157 %0 = sext i8 %s to i64158 %wide.trip.count = sext i8 %n to i64159 br label %for.body160 161for.body:162 %iv = phi i64 [ %0, %for.body.preheader ], [ %iv.next, %for.body ]163 %iv.next = add nsw i64 %iv, 1164 %exitcond.not = icmp eq i64 %iv.next, %wide.trip.count165 br i1 %exitcond.not, label %exit, label %for.body166 167exit:168 ret void169}170 171define void @dual_sext_ne_with_nsw_inc(i8 %s, i64 %n) {172; CHECK-LABEL: 'dual_sext_ne_with_nsw_inc'173; CHECK-NEXT: Determining loop execution counts for: @dual_sext_ne_with_nsw_inc174; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + (-1 * (sext i8 %s to i64))<nsw> + %n)175; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i64 -1176; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + (-1 * (sext i8 %s to i64))<nsw> + %n)177; CHECK-NEXT: Loop %for.body: Trip multiple is 1178;179entry:180 %0 = sext i8 %s to i64181 br label %for.body182 183for.body:184 %iv = phi i64 [ %0, %entry ], [ %iv.next, %for.body ]185 %iv.next = add nsw i64 %iv, 1186 %exitcond.not = icmp eq i64 %iv.next, %n187 br i1 %exitcond.not, label %exit, label %for.body188 189exit:190 ret void191}192 193define void @dual_sext_ne_with_nuw_inc(i8 %s, i64 %n) {194; CHECK-LABEL: 'dual_sext_ne_with_nuw_inc'195; CHECK-NEXT: Determining loop execution counts for: @dual_sext_ne_with_nuw_inc196; CHECK-NEXT: Loop %for.body: backedge-taken count is (-1 + (-1 * (sext i8 %s to i64))<nsw> + %n)197; CHECK-NEXT: Loop %for.body: constant max backedge-taken count is i64 -1198; CHECK-NEXT: Loop %for.body: symbolic max backedge-taken count is (-1 + (-1 * (sext i8 %s to i64))<nsw> + %n)199; CHECK-NEXT: Loop %for.body: Trip multiple is 1200;201entry:202 %0 = sext i8 %s to i64203 br label %for.body204 205for.body:206 %iv = phi i64 [ %0, %entry ], [ %iv.next, %for.body ]207 %iv.next = add nuw i64 %iv, 1208 %exitcond.not = icmp eq i64 %iv.next, %n209 br i1 %exitcond.not, label %exit, label %for.body210 211exit:212 ret void213}214