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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-27 23:58:52 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-27 23:58:52 +0000 |
| commit | dd364419ee64cd5bb234af006ce0cb285e4a84ca (patch) | |
| tree | 39b3a87aca20346bf316390cb68c42812ce683ab /lib/Support/FileUtilities.cpp | |
| parent | 94a935f072452d00207b1e8c1da75c31bb2a5f9b (diff) | |
Add ATOMIC_LDR* pseudo-instructions to model atomic_load on ARM.
It is not safe to use normal LDR instructions because they may be
reordered by the scheduler. The ATOMIC_LDR pseudos have a mayStore flag
that prevents reordering.
Atomic loads are also prevented from participating in rematerialization
and load folding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162713 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/FileUtilities.cpp')
0 files changed, 0 insertions, 0 deletions