From 74c740052a143027bbc2d14594d6188e2e597fa1 Mon Sep 17 00:00:00 2001 From: Tobias Grosser Date: Fri, 16 Jul 2010 05:59:45 +0000 Subject: LoopSimplify does not update domfrontier correctly. This fixes PR7649. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108513 91177308-0d34-0410-b5e6-96231b3b80d8 --- .../2010-07-15-IncorrectDomFrontierUpdate.ll | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 test/Transforms/LoopSimplify/2010-07-15-IncorrectDomFrontierUpdate.ll (limited to 'test/Transforms') diff --git a/test/Transforms/LoopSimplify/2010-07-15-IncorrectDomFrontierUpdate.ll b/test/Transforms/LoopSimplify/2010-07-15-IncorrectDomFrontierUpdate.ll new file mode 100644 index 0000000000..2a1ee7d1a7 --- /dev/null +++ b/test/Transforms/LoopSimplify/2010-07-15-IncorrectDomFrontierUpdate.ll @@ -0,0 +1,20 @@ +; RUN: opt < %s -domfrontier -loopsimplify -domfrontier -verify-dom-info -analyze + + +define void @a() nounwind { +entry: + br i1 undef, label %bb37, label %bb1.i + +bb1.i: ; preds = %bb1.i, %bb + %indvar = phi i64 [ %indvar.next, %bb1.i ], [ 0, %entry ] ; [#uses=1] + %indvar.next = add i64 %indvar, 1 ; [#uses=2] + %exitcond = icmp eq i64 %indvar.next, 576 ; [#uses=1] + br i1 %exitcond, label %bb37, label %bb1.i + +bb37: ; preds = %bb1.i, %bb + br label %return + + +return: ; preds = %bb39 + ret void +} -- cgit v1.2.3