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Consistent use of the noduplicate attribute.

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The "noduplicate" attribute of call instructions is sometimes queried directly
and sometimes through the cannotDuplicate() predicate. This patch streamlines
all queries to use the cannotDuplicate() predicate. It also adds this predicate
to InvokeInst, to mirror what CallInst has.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204049 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eli Bendersky
2014-03-17 16:19:07 +00:00
parent 133aacf0dd
commit bbbc2b1140
5 changed files with 12 additions and 6 deletions
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2
lib/Transforms/Scalar/JumpThreading.cpp
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@@ -255,7 +255,7 @@ static unsigned getJumpThreadDuplicationCost(const BasicBlock *BB,
// as having cost of 2 total, and if they are a vector intrinsic, we model
// them as having cost 1.
if (const CallInst *CI = dyn_cast<CallInst>(I)) {
if (CI->hasFnAttr(Attribute::NoDuplicate))
if (CI->cannotDuplicate())
// Blocks with NoDuplicate are modelled as having infinite cost, so they
// are never duplicated.
return ~0U;