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| author | Bill Wendling <isanbard@gmail.com> | 2009-05-28 23:40:46 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2009-05-28 23:40:46 +0000 |
| commit | 2265ba071762b461ed1e65ebd73f596a98208f60 (patch) | |
| tree | 12961df453e2c0405f6fb6daf20d2216d238b3c2 /lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 056dbd0645875b69e825bf04f5360856eb3f0ece (diff) | |
The MONITOR and MWAIT instructions have insufficient information for
decoding. Essentially, they both map to the same column in the "opcode
extensions for one- and two-byte opcodes" table in the x86 manual. The RawFrm
complicates decoding this.
Instead, use opcode 0x01, prefix 0x01, and form MRM1r. Then have the code
emitter special case these, a la [SML]FENCE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72556 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
0 files changed, 0 insertions, 0 deletions