tree cf31e803bfae944b9271a7b567a182113e8df994
parent c11a95fb078ef1e00faab6fc61c7a77257eedb13
author Matthias Braun <matze@braunis.de> 1531420412 +0000
committer Matthias Braun <matze@braunis.de> 1531420412 +0000

CodeGen: Remove pipeline dependencies on StackProtector; NFC

PrologEpilogInserter and StackColoring depend on the StackProtector analysis
being alive from the point it is run until PEI, which requires that they are all
scheduled in the same FunctionPassManager. Inserting a (machine) ModulePass
between StackProtector and PEI results in these passes being in separate
FunctionPassManagers and the StackProtector is not available for PEI.

PEI and StackColoring don't use much information from the StackProtector pass,
so transfering the required information to MachineFrameInfo is cleaner than
keeping the StackProtector pass around. This commit moves the SSP layout
information to MFI instead of keeping it in the pass.

This patch set (D37580, D37581, D37582, D37583, D37584, D37585, D37586, D37587)
is a first draft of the pagerando implementation described in
http://lists.llvm.org/pipermail/llvm-dev/2017-June/113794.html.

Patch by Stephen Crane <sjc@immunant.com>

Differential Revision: https://reviews.llvm.org/D49256

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@336929 91177308-0d34-0410-b5e6-96231b3b80d8