[libc-commits] [PATCH] D152226: [FunctionAttrs] Propagate some func/arg/ret attributes from caller to callsite (WIP)

[Nikita Popov via Phabricator via libc-commits]

nikic added inline comments.


================
Comment at: llvm/lib/Transforms/Utils/InferCallsiteAttrs.cpp:597
+  // callsite violating the constraint.
+  if (checkCallerDoesNotAccessMemory() && !CB->doesNotAccessMemory()) {
+    // Wait until we know we actually need it to do potentially expensive
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For these you generally want to query `getMemoryEffects()` on the caller/callee once and then work on that representation, instead of doing separate queries for everything. This may allow more precise handling and likely reduces the compile-time impact, as doing these attribute lookups is quite expensive.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D152226/new/

https://reviews.llvm.org/D152226