diff options
| author | Matthias Braun <matze@braunis.de> | 2016-01-30 01:24:31 +0000 |
|---|---|---|
| committer | Matthias Braun <matze@braunis.de> | 2016-01-30 01:24:31 +0000 |
| commit | b30f2f51410449a6d476fed5c486a4ef8fd5f912 (patch) | |
| tree | af58fd7a768c6b601eaf890020aa3e2b4a3130b6 /llvm/lib/Analysis/CFG.cpp | |
| parent | daa812d518b1f49feddeb08fcc9c5e563b0bf11e (diff) | |
| download | bcm5719-llvm-b30f2f51410449a6d476fed5c486a4ef8fd5f912.tar.gz bcm5719-llvm-b30f2f51410449a6d476fed5c486a4ef8fd5f912.zip | |
Avoid overly large SmallPtrSet/SmallSet
These sets perform linear searching in small mode so it is never a good
idea to use SmallSize/N bigger than 32.
llvm-svn: 259283
Diffstat (limited to 'llvm/lib/Analysis/CFG.cpp')
| -rw-r--r-- | llvm/lib/Analysis/CFG.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/CFG.cpp b/llvm/lib/Analysis/CFG.cpp index 0dfd57d3cb6..a319be8092f 100644 --- a/llvm/lib/Analysis/CFG.cpp +++ b/llvm/lib/Analysis/CFG.cpp @@ -138,7 +138,7 @@ bool llvm::isPotentiallyReachableFromMany( // Limit the number of blocks we visit. The goal is to avoid run-away compile // times on large CFGs without hampering sensible code. Arbitrarily chosen. unsigned Limit = 32; - SmallSet<const BasicBlock*, 64> Visited; + SmallPtrSet<const BasicBlock*, 32> Visited; do { BasicBlock *BB = Worklist.pop_back_val(); if (!Visited.insert(BB).second) |
