[llvm] [ConstantHoisting] Add a TTI hook to prevent hoisting. (PR #69004)

[Nikita Popov via llvm-commits]

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@@ -427,6 +427,11 @@ class TargetTransformInfoImplBase {
     return TTI::TCC_Free;
   }
 
+  bool preferToKeepConstantsAttached(const Instruction &Inst,
+                                     const Function &Fn) const {
+    return true;
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nikic wrote:

Shouldn't this default implementation return false rather than true?

https://github.com/llvm/llvm-project/pull/69004