| commit | 46668e09be3856fae935c5857b53dea74302173f | [log] [tgz] |
|---|---|---|
| author | Evan Cheng <evan.cheng@apple.com> | Thu Oct 01 08:21:18 2009 +0000 |
| committer | Evan Cheng <evan.cheng@apple.com> | Thu Oct 01 08:21:18 2009 +0000 |
| tree | 7edcb8081d80d72d9a839bebf8925252331ffecb | |
| parent | e364e7bc2b6ff3323cb8e4bf4e3a44a71eb04944 [diff] |
Add instruction flags: hasExtraSrcRegAllocReq and hasExtraDefRegAllocReq. When set, these flags indicate the instructions source / def operands have special register allocation requirement that are not captured in their register classes. Post-allocation passes (e.g. post-alloc scheduler) should not change their allocations. e.g. ARM::LDRD require the two definitions to be allocated even / odd register pair. llvm-svn: 83196