[llvm] [SCCP] fix non-determinism (PR #105758)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-transforms

Author: Florian Mayer (fmayer)

<details>
<summary>Changes</summary>

the visit order depended on hashing because we iterated over a
SmallPtrSet


---
Full diff: https://github.com/llvm/llvm-project/pull/105758.diff


1 Files Affected:

- (modified) llvm/lib/Transforms/Utils/SCCPSolver.cpp (+2-1) 


``````````diff
diff --git a/llvm/lib/Transforms/Utils/SCCPSolver.cpp b/llvm/lib/Transforms/Utils/SCCPSolver.cpp
index 40f0f04c323ddc..670d88ac7cf8fa 100644
--- a/llvm/lib/Transforms/Utils/SCCPSolver.cpp
+++ b/llvm/lib/Transforms/Utils/SCCPSolver.cpp
@@ -13,6 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/Transforms/Utils/SCCPSolver.h"
+#include "llvm/ADT/SetVector.h"
 #include "llvm/Analysis/ConstantFolding.h"
 #include "llvm/Analysis/InstructionSimplify.h"
 #include "llvm/Analysis/ValueLattice.h"
@@ -418,7 +419,7 @@ class SCCPInstVisitor : public InstVisitor<SCCPInstVisitor> {
 
   DenseMap<Function *, std::unique_ptr<PredicateInfo>> FnPredicateInfo;
 
-  DenseMap<Value *, SmallPtrSet<User *, 2>> AdditionalUsers;
+  DenseMap<Value *, SmallSetVector<User *, 2>> AdditionalUsers;
 
   LLVMContext &Ctx;
 

``````````

</details>


https://github.com/llvm/llvm-project/pull/105758