10 Commits

Author SHA1 Message Date
Daniel Berlin
e33bc31df4 Re-apply MemorySSA: Add support for caching clobbering access in
stores with some fixes.

Summary:
This enables us to cache the clobbering access for stores, despite the
fact that we can't rewrite the use-def chains themselves.

Early testing shows that, after this change, for larger testcases, it
will be a significant net positive (memory and time) to remove the
walker caching.

Reviewers: george.burgess.iv, davide

Subscribers: Prazek, llvm-commits

Differential Revision: https://reviews.llvm.org/D31567

llvm-svn: 299486
2017-04-04 23:43:10 +00:00
Daniel Berlin
f49d4c45a1 Revert "MemorySSA: Add support for caching clobbering access in stores"
This reverts revision r299322.

llvm-svn: 299485
2017-04-04 23:43:04 +00:00
Daniel Berlin
8a00270838 MemorySSA: Add support for caching clobbering access in stores
Summary:
This enables us to cache the clobbering access for stores, despite the
fact that we can't rewrite the use-def chains themselves.

Early testing shows that, after this change, for larger testcases, it will be a significant net positive (memory and time) to remove the walker caching.

Reviewers: george.burgess.iv, davide

Subscribers: Prazek, llvm-commits

Differential Revision: https://reviews.llvm.org/D31567

llvm-svn: 299322
2017-04-02 05:09:15 +00:00
Daniel Berlin
17e8d0eae2 Move updating functions to MemorySSAUpdater.
Add updater to passes that now need it.
Move around code in MemorySSA to expose needed functions.

Summary: Mostly cleanup

Reviewers: george.burgess.iv

Subscribers: llvm-commits, Prazek

Differential Revision: https://reviews.llvm.org/D30221

llvm-svn: 295887
2017-02-22 22:19:55 +00:00
Daniel Berlin
78cbd28102 MemorySSA: Add support for renaming uses in the updater.
Summary:
This lets one add aliasing stores to the updater.
(i'm next going to move the creation/etc functions to the updater)

Reviewers: george.burgess.iv

Subscribers: llvm-commits, Prazek

Differential Revision: https://reviews.llvm.org/D30154

llvm-svn: 295677
2017-02-20 22:26:03 +00:00
Daniel Berlin
9d8a335ce0 Revert "[MemorySSA] Revert r293361 and r293363, as the tests fail under asan."
This reverts commit r293471, reapplying r293361 and r293363 with a fix
for an out-of-bounds read.

llvm-svn: 293474
2017-01-30 11:35:39 +00:00
Sam McCall
b9d6c10c2d [MemorySSA] Revert r293361 and r293363, as the tests fail under asan.
llvm-svn: 293471
2017-01-30 09:19:50 +00:00
Daniel Berlin
ee6e3a598a MemorySSA: Allow movement to arbitrary places
Summary: Extend the MemorySSAUpdater API to allow movement to arbitrary places

Reviewers: davide, george.burgess.iv

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D29239

llvm-svn: 293363
2017-01-28 02:26:39 +00:00
Daniel Berlin
2f1ab4ba79 MemorySSA: Fix block numbering invalidation and replacement bugs discovered by updater
llvm-svn: 293361
2017-01-28 02:22:52 +00:00
Daniel Berlin
ae6b8b6933 MemorySSA: Move updater to its own file
llvm-svn: 293357
2017-01-28 01:35:02 +00:00