[llvm] [DXIL] Implement pow lowering (PR #86733)

[Joshua Batista via llvm-commits]

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@@ -197,6 +198,26 @@ static bool expandLog10Intrinsic(CallInst *Orig) {
   return expandLogIntrinsic(Orig, numbers::ln2f / numbers::ln10f);
 }
 
+static bool expandPowIntrinsic(CallInst *Orig) {
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bob80905 wrote:

Agreed, in terms of aesthetics, it would look bad. However, (this may not be the PR to make this change), maybe this could be considered:

switch (F.getIntrinsicID()) {
  case <a pre-existing case>:
     expand<whatever function>(...);
     break;
  ....
  default:
     return false;
  }
  return true;

There would be break statements in each case, but that could be an improvement? This is a bit pedantic but it feels slightly icky to have a function return a boolean unconditionally.

https://github.com/llvm/llvm-project/pull/86733