[NFC][AMDGPU][Attributor] Only iterate over filtered functions when creating AAs (#108417)

Author: shiltian

llvm/lib/Target/AMDGPU/AMDGPUAttributor.cpp

@@ -1065,19 +1065,16 @@ static bool runImpl(Module &M, AnalysisGetter &AG, TargetMachine &TM,
 
   Attributor A(Functions, InfoCache, AC);
 
-  for (Function &F : M) {
-    if (F.isIntrinsic())
-      continue;
-
-    A.getOrCreateAAFor<AAAMDAttributes>(IRPosition::function(F));
-    A.getOrCreateAAFor<AAUniformWorkGroupSize>(IRPosition::function(F));
-    A.getOrCreateAAFor<AAAMDGPUNoAGPR>(IRPosition::function(F));
-    CallingConv::ID CC = F.getCallingConv();
+  for (auto *F : Functions) {
+    A.getOrCreateAAFor<AAAMDAttributes>(IRPosition::function(*F));
+    A.getOrCreateAAFor<AAUniformWorkGroupSize>(IRPosition::function(*F));
+    A.getOrCreateAAFor<AAAMDGPUNoAGPR>(IRPosition::function(*F));
+    CallingConv::ID CC = F->getCallingConv();
     if (!AMDGPU::isEntryFunctionCC(CC)) {
-      A.getOrCreateAAFor<AAAMDFlatWorkGroupSize>(IRPosition::function(F));
-      A.getOrCreateAAFor<AAAMDWavesPerEU>(IRPosition::function(F));
+      A.getOrCreateAAFor<AAAMDFlatWorkGroupSize>(IRPosition::function(*F));
+      A.getOrCreateAAFor<AAAMDWavesPerEU>(IRPosition::function(*F));
     } else if (CC == CallingConv::AMDGPU_KERNEL) {
-      addPreloadKernArgHint(F, TM);
+      addPreloadKernArgHint(*F, TM);
     }
 
     for (auto &I : instructions(F)) {