1; NOTE: Assertions have been autogenerated by utils/update_analyze_test_checks.py 2; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" -scalar-evolution-classify-expressions=0 2>&1 | FileCheck %s 3 4@mode_table = global [4 x i32] zeroinitializer ; <ptr> [#uses=1] 5 6define i8 @f() { 7; CHECK-LABEL: 'f' 8; CHECK-NEXT: Determining loop execution counts for: @f 9; CHECK-NEXT: Loop %bb: <multiple exits> Unpredictable backedge-taken count. 10; CHECK-NEXT: exit count for bb: ***COULDNOTCOMPUTE*** 11; CHECK-NEXT: exit count for bb2: i8 1 12; CHECK-NEXT: Loop %bb: constant max backedge-taken count is i8 1 13; CHECK-NEXT: Loop %bb: symbolic max backedge-taken count is i8 1 14; CHECK-NEXT: symbolic max exit count for bb: ***COULDNOTCOMPUTE*** 15; CHECK-NEXT: symbolic max exit count for bb2: i8 1 16; 17entry: 18 tail call i32 @fegetround( ) ; <i32>:0 [#uses=1] 19 br label %bb 20 21bb: ; preds = %bb4, %entry 22 %mode.0 = phi i8 [ 0, %entry ], [ %indvar.next, %bb4 ] ; <i8> [#uses=4] 23 zext i8 %mode.0 to i32 ; <i32>:1 [#uses=1] 24 getelementptr [4 x i32], ptr @mode_table, i32 0, i32 %1 ; <ptr>:2 [#uses=1] 25 load i32, ptr %2, align 4 ; <i32>:3 [#uses=1] 26 icmp eq i32 %3, %0 ; <i1>:4 [#uses=1] 27 br i1 %4, label %bb1, label %bb2 28 29bb1: ; preds = %bb 30 ret i8 %mode.0 31 32bb2: ; preds = %bb 33 icmp eq i8 %mode.0, 1 ; <i1>:5 [#uses=1] 34 br i1 %5, label %bb5, label %bb4 35 36bb4: ; preds = %bb2 37 %indvar.next = add i8 %mode.0, 1 ; <i8> [#uses=1] 38 br label %bb 39 40bb5: ; preds = %bb2 41 tail call void @raise_exception( ) noreturn 42 unreachable 43} 44 45declare i32 @fegetround() 46 47declare void @raise_exception() noreturn 48