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- ; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
- ; ScalarEvolution should be able to compute a loop exit value for %indvar.i8.
- ; CHECK: sext{{.*}}trunc{{.*}}Exits: 11
- define void @another_count_down_signed(double* %d, i64 %n) nounwind {
- entry:
- br label %loop
- loop: ; preds = %loop, %entry
- %indvar = phi i64 [ %n, %entry ], [ %indvar.next, %loop ] ; <i64> [#uses=4]
- %s0 = shl i64 %indvar, 8 ; <i64> [#uses=1]
- %indvar.i8 = ashr i64 %s0, 8 ; <i64> [#uses=1]
- %t0 = getelementptr double, double* %d, i64 %indvar.i8 ; <double*> [#uses=2]
- %t1 = load double, double* %t0 ; <double> [#uses=1]
- %t2 = fmul double %t1, 1.000000e-01 ; <double> [#uses=1]
- store double %t2, double* %t0
- %indvar.next = sub i64 %indvar, 1 ; <i64> [#uses=2]
- %exitcond = icmp eq i64 %indvar.next, 10 ; <i1> [#uses=1]
- br i1 %exitcond, label %return, label %loop
- return: ; preds = %loop
- ret void
- }
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