[llvm] [RISCV][TTI] Simplify compound check for readability [nfc] (PR #121504)

[Craig Topper via llvm-commits]

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@@ -2558,8 +2558,10 @@ RISCVTTIImpl::enableMemCmpExpansion(bool OptSize, bool IsZeroCmp) const {
   TTI::MemCmpExpansionOptions Options;
   // TODO: Enable expansion when unaligned access is not supported after we fix
   // issues in ExpandMemcmp.
-  if (!(ST->enableUnalignedScalarMem() &&
-        (ST->hasStdExtZbb() || ST->hasStdExtZbkb() || IsZeroCmp)))
+  if (!ST->enableUnalignedScalarMem())
+    return Options;
+
+  if (!(ST->hasStdExtZbb() || ST->hasStdExtZbkb() || IsZeroCmp))
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topperc wrote:

deMorgan this?

https://github.com/llvm/llvm-project/pull/121504