tree 7bb855bee3c93bd2d4edec359480b4606606559d
parent d8d7b90ca57e8e3762951bb419b6f2645bb414c5
author Nicolas Geoffray <ngeoffray@google.com> 1434727025 +0100
committer Nicolas Geoffray <ngeoffray@google.com> 1434728760 +0100

Be careful with predecessor/successor index.

When we simplify the CFG, we must preserve things that were already
simplified. For example, the index in the predecessor list or
successor list of a block must be preserved for ensuring the
first block is a loop pre header.

bug:21867463

Change-Id: Ic3fcb3eb2c3fb109d8a57ee2a6b6d4d65fdb9410