[clang] [llvm] [AMDGPU] Infer amdgpu-no-flat-scratch-init attribute in AMDGPUAttributor (PR #94647)

[Matt Arsenault via llvm-commits]

================
@@ -439,6 +439,26 @@ struct AAAMDAttributesFunction : public AAAMDAttributes {
       indicatePessimisticFixpoint();
       return;
     }
+
+    SmallPtrSet<const Constant *, 8> VisitedConsts;
+
+    for (Instruction &I : instructions(F)) {
----------------
arsenm wrote:

Should use checkForAllInstructions instead of manually looking at all instructions 

https://github.com/llvm/llvm-project/pull/94647