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Previous debug info fix to this code wasn't quite

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right; did the wrong thing when there are exactly 11
non-debug instructions, followed by debug info.
Remove a FIXME since it's apparently been fixed along the way.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@66840 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dale Johannesen 2009-03-12 23:18:09 +00:00
parent 7e07c00120
commit 8483e54837
1 changed files with 4 additions and 5 deletions
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9
lib/Transforms/Utils/SimplifyCFG.cpp
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@ -1122,14 +1122,13 @@ static bool BlockIsSimpleEnoughToThreadThrough(BasicBlock *BB) {
BranchInst *BI = cast<BranchInst>(BB->getTerminator());
unsigned Size = 0;
// If this basic block contains anything other than a PHI (which controls the
// branch) and branch itself, bail out. FIXME: improve this in the future.
for (BasicBlock::iterator BBI = BB->begin(); &*BBI != BI; ++BBI) {
if (isa<DbgInfoIntrinsic>(BBI))
continue;
if (Size > 10) return false; // Don't clone large BB's.
if (!isa<DbgInfoIntrinsic>(BBI))
++Size;
++Size;
// We can only support instructions that are do not define values that are
// We can only support instructions that do not define values that are
// live outside of the current basic block.
for (Value::use_iterator UI = BBI->use_begin(), E = BBI->use_end();
UI != E; ++UI) {