diff options
Diffstat (limited to 'lib/Target/SparcV9/RegAlloc')
| -rw-r--r-- | lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp b/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp index 53949a7..0c55219 100644 --- a/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp +++ b/lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp @@ -1,6 +1,15 @@ //===-- PhyRegAlloc.cpp ---------------------------------------------------===// // -// Register allocation for LLVM. +// Traditional graph-coloring global register allocator currently used +// by the SPARC back-end. +// +// NOTE: This register allocator has some special support +// for the Reoptimizer, such as not saving some registers on calls to +// the first-level instrumentation function. +// +// NOTE 2: This register allocator can save its state in a global +// variable in the module it's working on. This feature is not +// thread-safe; if you have doubts, leave it turned off. // //===----------------------------------------------------------------------===// |