[llvm] [TTI][AMDGPU] Allow targets to adjust `LastCallToStaticBonus` via `getInliningLastCallToStaticBonus` (PR #111311)

[Matt Arsenault via llvm-commits]

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@@ -74,6 +74,11 @@ class TargetTransformInfoImplBase {
   unsigned getInliningCostBenefitAnalysisProfitableMultiplier() const {
     return 8;
   }
+  int getInliningLastCallToStaticBonus() const {
+    // This is the value of InlineConstants::LastCallToStaticBonus before this
+    // function was introduced.
+    return 15000;
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arsenm wrote:

Can you just use the constant enum instead of hardcoding it with comment? 

https://github.com/llvm/llvm-project/pull/111311