[llvm] [NFC][LLVM][CodeGen][X86] Add ConstantInt/FP based vector support to MachineInstr fixup and printing code. (PR #137331)

[Paul Walker via llvm-commits]

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@@ -88,11 +88,19 @@ static std::optional<APInt> extractConstantBits(const Constant *C) {
   if (isa<UndefValue>(C))
     return APInt::getZero(NumBits);
 
-  if (auto *CInt = dyn_cast<ConstantInt>(C))
+  if (auto *CInt = dyn_cast<ConstantInt>(C)) {
+    if (isa<VectorType>(CInt->getType()))
+      return APInt::getSplat(NumBits, CInt->getValue());
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paulwalker-arm wrote:

No objections but is it worth waiting to see what everywhere means? because up to press this is the first time I've needed this idiom and the IR side is mostly complete.

https://github.com/llvm/llvm-project/pull/137331