[llvm] [FuncSpec] Only compute Latency bonus when necessary (PR #113159)

[Alexandros Lamprineas via llvm-commits]

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@@ -97,21 +98,29 @@ class FunctionSpecializationTest : public testing::Test {
                                GetAC);
   }
 
-  Bonus getInstCost(Instruction &I, bool SizeOnly = false) {
+  Cost getInstCodeSize(Instruction &I, bool SizeOnly = false) {
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labrinea wrote:

s/getInstCodeSize/getCodeSizeSavings

The parameter name SizeOnly becomes confusing size the function is now supposed to only compute CodeSize, whereas before it conditionally accounted for Latency too. Perhaps rename the argument to `HasLatencySavings` and default initialize with `true`?

https://github.com/llvm/llvm-project/pull/113159