[llvm] [AMDGPU] Enable kernarg preloading by default on gfx940 (PR #110691)

[Matt Arsenault via llvm-commits]

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@@ -1014,12 +1014,49 @@ struct AAAMDGPUNoAGPR
 
 const char AAAMDGPUNoAGPR::ID = 0;
 
+static unsigned getMaxNumPreloadArgs(const Function &F, const DataLayout &DL,
+                                     const TargetMachine &TM) {
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arsenm wrote:

GCNTargetMachine 

https://github.com/llvm/llvm-project/pull/110691