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Diffstat (limited to 'src/passes/CoalesceLocals.cpp')
| -rw-r--r-- | src/passes/CoalesceLocals.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/passes/CoalesceLocals.cpp b/src/passes/CoalesceLocals.cpp index 232685001..e5416971b 100644 --- a/src/passes/CoalesceLocals.cpp +++ b/src/passes/CoalesceLocals.cpp @@ -19,6 +19,11 @@ // is similar to register allocation, however, there is never any // spilling, and there isn't a fixed number of locals. // +// NB: This pass is nonlinear in the number of locals. It is best to run it +// after the number of locals has been somewhat reduced by other passes, +// for example by simplify-locals (to remove unneeded uses of locals) and +// reorder-locals (to sort them by # of uses and remove all unneeded ones). +// #include <algorithm> #include <memory> |