alexfh added a comment.
In D93688#2525947 <https://reviews.llvm.org/D93688#2525947>, @alexfh wrote:
> This patch causes practically infinite traversal times on code that contains
> deeply nested lambdas. I'll try to get a suitable repro, but could you maybe
> revert this in the meantime?
Actually, there's a very simple test case:
void f() {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
[] {
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}();
}
It looks like each lambda traversal triggers multiple traversals of the same
AST fragment causing exponential growth of the traversal time.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D93688/new/
https://reviews.llvm.org/D93688
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