llvm-project

Commit Graph

Author	SHA1	Message	Date
Simon Pilgrim	d2f8961b7b	[MemCpyOpt] Remove unused check-prefixes Just use default CHECK	2020-11-09 12:18:20 +00:00
Nikita Popov	cd6f40f432	[MemCpyOpt] Add test scaffolding for MSSA based MemCpyOpt This adds an -enable-memcpyopt-memoryssa option that currently does nothing apart from requiring MSSA as a dependency. The tests are split to run both with the option disabled and enabled. I went with this rather than the separate directory DSE uses, as I found it convenient to have a direct side-by-side comparison of differences. Differential Revision: https://reviews.llvm.org/D89206	2020-10-13 21:45:05 +02:00
Philip Reames	bb0344644a	[memcpyopt] Conservatively handle non-integral pointers If we allow the non-integral pointers to become memset and memcpy, we loose the ability to reason about pointer propagation. This patch is modeled on changes we've carried downstream for a long time, figured it was worth being equally conservative for other users. There is room to refine the semantics and handling here if anyone is motivated.	2020-10-01 16:46:56 -07:00

Author

SHA1

Message

Date

Simon Pilgrim

d2f8961b7b

[MemCpyOpt] Remove unused check-prefixes

Just use default CHECK

2020-11-09 12:18:20 +00:00

Nikita Popov

cd6f40f432

[MemCpyOpt] Add test scaffolding for MSSA based MemCpyOpt

This adds an -enable-memcpyopt-memoryssa option that currently does
nothing apart from requiring MSSA as a dependency. The tests are
split to run both with the option disabled and enabled. I went with
this rather than the separate directory DSE uses, as I found it
convenient to have a direct side-by-side comparison of differences.

Differential Revision: https://reviews.llvm.org/D89206

2020-10-13 21:45:05 +02:00

Philip Reames

bb0344644a

[memcpyopt] Conservatively handle non-integral pointers

If we allow the non-integral pointers to become memset and memcpy, we loose the ability to reason about pointer propagation.  This patch is modeled on changes we've carried downstream for a long time, figured it was worth being equally conservative for other users.  There is room to refine the semantics and handling here if anyone is motivated.

2020-10-01 16:46:56 -07:00

3 Commits