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insert some sequence points and preincrement an iterator to avoid 

iterator invalidation problems.

llvm-svn: 61124
This commit is contained in:
Chris Lattner 2008-12-17 05:42:08 +00:00
parent 222ef4c489
commit 0cdf52310a
1 changed files with 8 additions and 7 deletions
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15
llvm/lib/Transforms/IPO/GlobalOpt.cpp
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@ -1205,10 +1205,10 @@ static void RewriteHeapSROALoadUser(Instruction *LoadUser,
// If this is the first time we've seen this PHI, recursively process all
// users.
for (Value::use_iterator UI = PN->use_begin(), E = PN->use_end(); UI != E;
++UI)
RewriteHeapSROALoadUser(cast<Instruction>(*UI), InsertedScalarizedValues,
PHIsToRewrite);
for (Value::use_iterator UI = PN->use_begin(), E = PN->use_end(); UI != E; ) {
Instruction *User = cast<Instruction>(*UI++);
RewriteHeapSROALoadUser(User, InsertedScalarizedValues, PHIsToRewrite);
}
}
/// RewriteUsesOfLoadForHeapSRoA - We are performing Heap SRoA on a global. Ptr
@ -1219,9 +1219,10 @@ static void RewriteUsesOfLoadForHeapSRoA(LoadInst *Load,
DenseMap<Value*, std::vector<Value*> > &InsertedScalarizedValues,
std::vector<std::pair<PHINode*, unsigned> > &PHIsToRewrite) {
for (Value::use_iterator UI = Load->use_begin(), E = Load->use_end();
UI != E; )
RewriteHeapSROALoadUser(cast<Instruction>(*UI++), InsertedScalarizedValues,
PHIsToRewrite);
UI != E; ) {
Instruction *User = cast<Instruction>(*UI++);
RewriteHeapSROALoadUser(User, InsertedScalarizedValues, PHIsToRewrite);
}
if (Load->use_empty()) {
Load->eraseFromParent();