| commit | 9bfc380d97bd87df1d5b8d84695013b5621a4025 | |
| author | rmcilroy@chromium.org <rmcilroy@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | |
| Thu, 10 Apr 2014 14:38:21 +0000 (10 14:38 +0000) | ||
| committer | rmcilroy@chromium.org <rmcilroy@chromium.org@0039d316-1c4b-4281-b951-d872f2087c98> | |
| Thu, 10 Apr 2014 14:38:21 +0000 (10 14:38 +0000) | ||
| tree | c886091d9c2f7451d0624e8b4004e0b7e44f456a | treesnapshot (tar.gz zip) |
| parent | c9440b2c20b191fef1c62c7b54266ad80a72cbf9 | commitdiff |
Fix and improve arm64 atomic operations in Base.
- The 'compare and swap' operations should enforce memory ordering even when
the exchange does not occur.
- The exclusive monitor does not need to be cleared by CLREX if a LDRX was
not followed by a matching STREX.
- Use LDAR and STLR where possible.
- Use the 'I' and 'J' constraints to hint for constants valid for immediate
values
Based on V8 changes at https://codereview.chromium.org/220793002
BUG=354405
Review URL: https://codereview.chromium.org/230963002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@262986 0039d316-1c4b-4281-b951-d872f2087c98
- The 'compare and swap' operations should enforce memory ordering even when
the exchange does not occur.
- The exclusive monitor does not need to be cleared by CLREX if a LDRX was
not followed by a matching STREX.
- Use LDAR and STLR where possible.
- Use the 'I' and 'J' constraints to hint for constants valid for immediate
values
Based on V8 changes at https://codereview.chromium.org/220793002
BUG=354405
Review URL: https://codereview.chromium.org/230963002
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@262986 0039d316-1c4b-4281-b951-d872f2087c98
| base/atomicops_internals_arm64_gcc.h | diffblobblamehistory |