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InstCombine: We know the number of items initially added to the worklist map, reserve space early to avoid rehashing.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127089 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Benjamin Kramer 2011-03-05 16:43:46 +00:00
parent 49d443053b
commit 103391d639
1 changed files with 1 additions and 0 deletions
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lib/Transforms/InstCombine/InstCombineWorklist.h
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@ -53,6 +53,7 @@ public:
void AddInitialGroup(Instruction *const *List, unsigned NumEntries) {
assert(Worklist.empty() && "Worklist must be empty to add initial group");
Worklist.reserve(NumEntries+16);
WorklistMap.resize(NumEntries);
DEBUG(errs() << "IC: ADDING: " << NumEntries << " instrs to worklist\n");
for (; NumEntries; --NumEntries) {
Instruction *I = List[NumEntries-1];