[llvm] [InstCombine] Fold constant byte stores to integer stores (PR #196740)

[Nikita Popov via llvm-commits]

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@@ -1462,6 +1462,36 @@ static bool equivalentAddressValues(Value *A, Value *B) {
   return false;
 }
 
+/// Recursively rewrite a ConstantByte into an equivalent ConstantInt.
+static Constant *convertConstantByteToConstantInt(Constant *C) {
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nikic wrote:

Why can't we use a simple (constant) bitcast here? (With an ImmArg constant to exclude constant expressions.)

https://github.com/llvm/llvm-project/pull/196740