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

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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 efe46ecfb3
commit 93d5cf945c
1 changed files with 2 additions and 4 deletions
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6
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);
}
}