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; ScalarEvolution should be able to compute a loop exit value for %indvar.i8. 5 6define void @another_count_down_signed(ptr %d, i64 %n) nounwind { 7; CHECK-LABEL: 'another_count_down_signed' 8; CHECK-NEXT: Determining loop execution counts for: @another_count_down_signed 9; CHECK-NEXT: Loop %loop: backedge-taken count is (-11 + %n) 10; CHECK-NEXT: Loop %loop: constant max backedge-taken count is i64 -1 11; CHECK-NEXT: Loop %loop: symbolic max backedge-taken count is (-11 + %n) 12; CHECK-NEXT: Loop %loop: Trip multiple is 1 13; 14entry: 15 br label %loop 16 17loop: ; preds = %loop, %entry 18 %indvar = phi i64 [ %n, %entry ], [ %indvar.next, %loop ] ; <i64> [#uses=4] 19 %s0 = shl i64 %indvar, 8 ; <i64> [#uses=1] 20 %indvar.i8 = ashr i64 %s0, 8 ; <i64> [#uses=1] 21 %t0 = getelementptr double, ptr %d, i64 %indvar.i8 ; <ptr> [#uses=2] 22 %t1 = load double, ptr %t0 ; <double> [#uses=1] 23 %t2 = fmul double %t1, 1.000000e-01 ; <double> [#uses=1] 24 store double %t2, ptr %t0 25 %indvar.next = sub i64 %indvar, 1 ; <i64> [#uses=2] 26 %exitcond = icmp eq i64 %indvar.next, 10 ; <i1> [#uses=1] 27 br i1 %exitcond, label %return, label %loop 28 29return: ; preds = %loop 30 ret void 31} 32