================
@@ -94,6 +94,38 @@ static llvm::BitVector findReachableBlocks(const CFG &Cfg) {
return BlockReachable;
}
+static llvm::DenseSet<const CFGBlock *>
+buildContainsExprConsumedInDifferentBlock(
+ const CFG &Cfg,
+ const llvm::DenseMap<const Stmt *, const CFGBlock *> &StmtToBlock) {
+ llvm::DenseSet<const CFGBlock *> Result;
+
+ auto CheckChildExprs = [&Result, &StmtToBlock](const Stmt *S,
+ const CFGBlock *Block) {
+ for (const Stmt *Child : S->children()) {
+ if (!isa<Expr>(Child))
+ continue;
+ const CFGBlock *ChildBlock = StmtToBlock.lookup(Child);
+ if (ChildBlock != Block)
+ Result.insert(ChildBlock);
+ }
+ };
+
+ for (const CFGBlock *Block : Cfg) {
+ if (Block == nullptr)
+ continue;
+
+ for (const CFGElement &Element : *Block)
----------------
Xazax-hun wrote:
Could we early terminate as soon as we found an expression that is consumed in
a different block? Also, in case we do early termination, would it make sense
to go backwards and start with the terminator conditions?
https://github.com/llvm/llvm-project/pull/82611
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