[llvm] [llvm] Replace unordered_{map,set} with Dense{Map,Set}/SmallPtrSet (PR #202222)

[Fangrui Song via llvm-commits]

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@@ -3051,17 +3050,18 @@ void SPIRVEmitIntrinsics::processInstrAfterVisit(Instruction *I,
 
 Type *SPIRVEmitIntrinsics::deduceFunParamElementType(Function *F,
                                                      unsigned OpIdx) {
-  std::unordered_set<Function *> FVisited;
+  DenseSet<Function *> FVisited;
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MaskRay wrote:

Switched to `SmallPtrSet<Function *, 0>`

https://github.com/llvm/llvm-project/pull/202222