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| author | Tanya Lattner <tonic@nondot.org> | 2009-08-31 06:12:11 +0000 |
|---|---|---|
| committer | Tanya Lattner <tonic@nondot.org> | 2009-08-31 06:12:11 +0000 |
| commit | 72e4d4b370b44fc02f4bd3370b99393ba8052170 (patch) | |
| tree | 7069c65acdf8e1451257b888d4e499a0d94c4b79 /lib/CodeGen/MachineModuleInfo.cpp | |
| parent | a729daf695c66532793f72d69a7c27404119bd6c (diff) | |
Merge from mainline.
Fix non-determinism in DAGISel emitter.
- This manifested as non-determinism in the .inc output in rare cases (when two
distinct patterns ended up being equivalent, which is rather rare). That
meant the pattern matching was non-deterministic, which could eventually mean
the code generator selected different instructions based on the arch.
- It's probably worth making the DAGISel ensure a total ordering (or force the
user to), but the simple fix here is to totally order the Record* maps based
on a unique ID.
- PR4672, PR4711.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_26@80543 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineModuleInfo.cpp')
0 files changed, 0 insertions, 0 deletions