Alina Sbirlea a7a3e6435d [MemorySSA] LCSSA preserves MemorySSA. ...

Summary:
Enabling MemorySSA in the old pass manager leads to MemorySSA being run
twice due to the fact that LCSSA and LoopSimplify do not preserve
MemorySSA. This is the first step to address that: target LCSSA.

LCSSA does not make any changes that invalidate MemorySSA, so it
preserves it by design. It must preserve AA as well, for this to hold.

After this patch, MemorySSA is still run twice in the old pass manager.
Step two follows: target LoopSimplify.

Subscribers: mehdi_amini, jlebar, Prazek, llvm-commits, george.burgess.iv, chandlerc

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D60832

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@359032 91177308-0d34-0410-b5e6-96231b3b80d8

2019-04-23 20:59:44 +00:00

..

AggressiveInstCombine

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00

Coroutines

[CallSite removal] Move the legacy PM, call graph, and some inliner

2019-04-19 05:59:42 +00:00

Hello

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00

InstCombine

[InstCombine] Convert a masked.load of a dereferenceable address to an unconditional load

2019-04-23 15:25:14 +00:00

Instrumentation

Use llvm::stable_sort

2019-04-23 14:51:27 +00:00

IPO

Use llvm::stable_sort

2019-04-23 14:51:27 +00:00

ObjCARC

[ObjC][ARC] Check the basic block size before calling

2019-04-23 19:49:03 +00:00

Scalar

Use llvm::stable_sort

2019-04-23 14:51:27 +00:00

Utils

[MemorySSA] LCSSA preserves MemorySSA.

2019-04-23 20:59:44 +00:00

Vectorize

Use llvm::stable_sort

2019-04-23 14:51:27 +00:00

CMakeLists.txt

Another try to commit 323321 (aggressive instruction combine).

2018-01-25 12:06:32 +00:00

LLVMBuild.txt

Update the file headers across all of the LLVM projects in the monorepo

2019-01-19 08:50:56 +00:00