1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py UTC_ARGS: --version 4 2; RUN: opt -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 < %s 2>&1 | FileCheck %s 3 4 5define i32 @multiple_exits_with_predicates(ptr %src1, ptr readonly %src2, i32 %end) { 6; CHECK-LABEL: 'multiple_exits_with_predicates' 7; CHECK-NEXT: Determining loop execution counts for: @multiple_exits_with_predicates 8; CHECK-NEXT: Loop %for.body: <multiple exits> Unpredictable backedge-taken count. 9; CHECK-NEXT: exit count for for.body: ***COULDNOTCOMPUTE*** 10; CHECK-NEXT: predicated exit count for for.body: i32 1023 11; CHECK-NEXT: Predicates: 12; CHECK-NEXT: {1,+,1}<%for.body> Added Flags: <nusw> 13; CHECK-EMPTY: 14; CHECK-NEXT: exit count for for.work: ***COULDNOTCOMPUTE*** 15; CHECK-NEXT: exit count for for.inc: ***COULDNOTCOMPUTE*** 16; CHECK-NEXT: predicated exit count for for.inc: (-1 + (1 umax %end)) 17; CHECK-NEXT: Predicates: 18; CHECK-NEXT: {1,+,1}<%for.body> Added Flags: <nusw> 19; CHECK-EMPTY: 20; CHECK-NEXT: Loop %for.body: Unpredictable constant max backedge-taken count. 21; CHECK-NEXT: Loop %for.body: Unpredictable symbolic max backedge-taken count. 22; CHECK-NEXT: symbolic max exit count for for.body: ***COULDNOTCOMPUTE*** 23; CHECK-NEXT: predicated symbolic max exit count for for.body: i32 1023 24; CHECK-NEXT: Predicates: 25; CHECK-NEXT: {1,+,1}<%for.body> Added Flags: <nusw> 26; CHECK-EMPTY: 27; CHECK-NEXT: symbolic max exit count for for.work: ***COULDNOTCOMPUTE*** 28; CHECK-NEXT: symbolic max exit count for for.inc: ***COULDNOTCOMPUTE*** 29; CHECK-NEXT: predicated symbolic max exit count for for.inc: (-1 + (1 umax %end)) 30; CHECK-NEXT: Predicates: 31; CHECK-NEXT: {1,+,1}<%for.body> Added Flags: <nusw> 32; CHECK-EMPTY: 33; CHECK-NEXT: Loop %for.body: Predicated constant max backedge-taken count is i32 1023 34; CHECK-NEXT: Predicates: 35; CHECK-NEXT: {1,+,1}<%for.body> Added Flags: <nusw> 36; CHECK-NEXT: {1,+,1}<%for.body> Added Flags: <nusw> 37; CHECK-NEXT: Loop %for.body: Predicated symbolic max backedge-taken count is (1023 umin (-1 + (1 umax %end))) 38; CHECK-NEXT: Predicates: 39; CHECK-NEXT: {1,+,1}<%for.body> Added Flags: <nusw> 40; CHECK-NEXT: {1,+,1}<%for.body> Added Flags: <nusw> 41; 42entry: 43 br label %for.body 44 45for.body: 46 %index = phi i8 [ %index.next, %for.inc ], [ 0, %entry ] 47 %index.next = add i8 %index, 1 48 %conv = zext i8 %index.next to i32 49 %cmp.body = icmp ne i32 %conv, 1024 50 br i1 %cmp.body, label %for.work, label %exit 51 52for.work: 53 %arrayidx = getelementptr inbounds i32, ptr %src1, i8 %index 54 %0 = load i32, ptr %arrayidx, align 4 55 %arrayidx3 = getelementptr inbounds i32, ptr %src2, i8 %index 56 %1 = load i32, ptr %arrayidx3, align 4 57 %cmp.work = icmp eq i32 %0, %1 58 br i1 %cmp.work, label %found, label %for.inc 59 60for.inc: 61 %cmp.inc = icmp ult i32 %conv, %end 62 br i1 %cmp.inc, label %for.body, label %exit 63 64found: 65 ret i32 1 66 67exit: 68 ret i32 0 69} 70