[Mlir-commits] [mlir] [mlir] Made DefaultResource the root of memory resource hierarchy. (PR #187423)

[Mehdi Amini]

================
@@ -224,10 +224,18 @@ bool CSEDriver::hasOtherSideEffectingOpInBetween(Operation *fromOp,
       if (isa<MemoryEffects::Write>(effect.getEffect())) {
         // A write on a resource disjoint from all read resources cannot
         // conflict with the reads being CSE'd.
-        auto *writeResource = effect.getResource();
-        bool canConflict = llvm::any_of(readResources, [&](auto *readResource) {
-          return !writeResource->isDisjointFrom(readResource);
-        });
+        SideEffects::Resource *writeResource = effect.getResource();
+        bool canConflict =
+            llvm::any_of(readEffects, [&](const auto &readEffect) {
+              SideEffects::Resource *readResource = readEffect.getResource();
+              if (writeResource->isDisjointFrom(readResource))
+                return false;
+              // A pointer-based access to an addressable resource cannot
----------------
joker-eph wrote:

In terms of side-effects, we're modeling state that is outside of SSA. 

I'm confused what else than "pointer" would be used to describe it (the SSA value **is** a pointer to a resource).

https://github.com/llvm/llvm-project/pull/187423