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| author | Tim Northover <tnorthover@apple.com> | 2013-07-01 14:48:48 +0000 |
|---|---|---|
| committer | Tim Northover <tnorthover@apple.com> | 2013-07-01 14:48:48 +0000 |
| commit | 953abab40ae89d546a379fa97afe6dea483e851a (patch) | |
| tree | 5db8f9756cabd9087db5f0a5ed8455bab444769b /llvm/lib/Support/YAMLParser.cpp | |
| parent | 8a4e24ea8b9d7059fa0a8b0a3ce3b838115dcc4a (diff) | |
| download | bcm5719-llvm-953abab40ae89d546a379fa97afe6dea483e851a.tar.gz bcm5719-llvm-953abab40ae89d546a379fa97afe6dea483e851a.zip | |
ARM: relax the atomic release barrier to "dmb ishst"
I believe the full "dmb ish" barrier is not required to guarantee release
semantics for atomic operations. The weaker "dmb ishst" prevents previous
operations being reordered with a store executed afterwards, which is enough.
A key point to note (fortunately already correct) is that this barrier alone is
*insufficient* for sequential consistency, no matter how liberally placed.
llvm-svn: 185339
Diffstat (limited to 'llvm/lib/Support/YAMLParser.cpp')
0 files changed, 0 insertions, 0 deletions
