[llvm] [Hexagon] Implement shouldConvertConstantLoadToIntImm (PR #146452)

[via llvm-commits]

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@@ -3607,6 +3611,18 @@ bool HexagonTargetLowering::isFPImmLegal(const APFloat &Imm, EVT VT,
   return true;
 }
 
+/// Returns true if it is beneficial to convert a load of a constant
+/// to just the constant itself.
+bool HexagonTargetLowering::shouldConvertConstantLoadToIntImm(const APInt &Imm,
+                                                              Type *Ty) const {
+  if (!ConstantLoadsToImm)
+    return false;
+
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aankit-ca wrote:

Does this change really need to be controlled by a flag? I feel this change can go in without a flag control. 

https://github.com/llvm/llvm-project/pull/146452