[llvm] [PartiallyInlineLibCalls] Emit missed- and passed-optimization remarks when partially inlining sqrt (PR #123966)

[Matt Arsenault via llvm-commits]

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@@ -56,6 +56,20 @@ static bool optimizeSQRT(CallInst *Call, Function *CalledFunc,
   // dst = phi(v0, v1)
   //
 
+  ORE->emit([&]() {
+    return OptimizationRemark(DEBUG_TYPE, "SqrtPartiallyInlined",
+                              Call->getDebugLoc(), &CurrBB)
+           << "Partially inlined call to sqrt function despite having to use "
+              "errno for error handling: target has fast sqrt instruction";
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arsenm wrote:

This doesn't know if the target has a "fast sqrt instruction" and this shouldn't be considering it 

https://github.com/llvm/llvm-project/pull/123966