llvm-project

Commit Graph

Author	SHA1	Message	Date
David Majnemer	a5b195a1dc	Revert "Revert r229082 for a bit, it caused PR22577." This reverts commit r229123. It was a red herring, the bug was present without r229082. llvm-svn: 229205	2015-02-14 01:35:12 +00:00
Nico Weber	7ce96b853d	Revert r229082 for a bit, it caused PR22577. llvm-svn: 229123	2015-02-13 16:27:00 +00:00
David Majnemer	abc482effc	MS ABI: Implement /volatile:ms The /volatile:ms semantics turn volatile loads and stores into atomic acquire and release operations. This distinction is important because volatile memory operations do not form a happens-before relationship with non-atomic memory. This means that a volatile store is not sufficient for implementing a mutex unlock routine. Differential Revision: http://reviews.llvm.org/D7580 llvm-svn: 229082	2015-02-13 07:55:47 +00:00

Author

SHA1

Message

Date

David Majnemer

a5b195a1dc

Revert "Revert r229082 for a bit, it caused PR22577."

This reverts commit r229123.  It was a red herring, the bug was present
without r229082.

llvm-svn: 229205

2015-02-14 01:35:12 +00:00

Nico Weber

7ce96b853d

Revert r229082 for a bit, it caused PR22577.

llvm-svn: 229123

2015-02-13 16:27:00 +00:00

David Majnemer

abc482effc

MS ABI: Implement /volatile:ms

The /volatile:ms semantics turn volatile loads and stores into atomic
acquire and release operations.  This distinction is important because
volatile memory operations do not form a happens-before relationship
with non-atomic memory.  This means that a volatile store is not
sufficient for implementing a mutex unlock routine.

Differential Revision: http://reviews.llvm.org/D7580

llvm-svn: 229082

2015-02-13 07:55:47 +00:00

3 Commits