[llvm-bugs] [Bug 33437] tryToUnrollLoop() ... Assertion `Idx >= 0 && "Invalid basic block argument!"' failed

via llvm-bugs llvm-bugs at lists.llvm.org
Mon Aug 28 13:30:53 PDT 2017


https://bugs.llvm.org/show_bug.cgi?id=33437

Davide Italiano <davide at freebsd.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Davide Italiano <davide at freebsd.org> ---
Fixed by:

commit 08774d7daf8b21b0e673af169b72d5b9c23e246f
Author: davide <davide at 91177308-0d34-0410-b5e6-96231b3b80d8>
Date:   Mon Aug 28 20:29:33 2017 +0000

    [LoopUnroll] Properly update loop structure in case of successful peeling.

    When peeling kicks in, it updates the loop preheader.
    Later, a successful full unroll of the loop needs to update a PHI
    which i-th argument comes from the loop preheader, so it'd better look
    at the correct block. Fixes PR33437.

    Differential Revision:  https://reviews.llvm.org/D37153

    git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@311922
91177308-0d34-0410-b5e6-96231b3b80d8

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