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[unroll] Don't check the loop set for whether an instruction is 

contained in it each time we try to add it to the worklist, just check
this when pulling it off the worklist. That way we do it at most once
per instruction with the cost of the worklist set we would need to pay
anyways.

llvm-svn: 229060
This commit is contained in:
Chandler Carruth 2015-02-13 04:30:44 +00:00
parent e5c30e4e10
commit 5457e20d27
1 changed files with 2 additions and 4 deletions
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6
llvm/lib/Transforms/Scalar/LoopUnrollPass.cpp
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@ -472,8 +472,6 @@ public:
Instruction *UI = dyn_cast<Instruction>(U);
if (!UI)
continue;
if (!L->contains(UI))
continue;
Worklist.insert(UI);
}
}
@ -483,14 +481,14 @@ public:
// its users as well.
while (!Worklist.empty()) {
Instruction *I = Worklist.pop_back_val();
if (!L->contains(I))
continue;
if (!visit(I))
continue;
for (User *U : I->users()) {
Instruction *UI = dyn_cast<Instruction>(U);
if (!UI)
continue;
if (!L->contains(UI))
continue;
Worklist.insert(UI);
}
}