[llvm] [AArch64][GlobalISel] Use GPR for illegal fconstants and extend < 32 bit GPR constants to 32 bits (PR #178692)

[Cullen Rhodes via llvm-commits]

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@@ -12,6 +12,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "AArch64RegisterBankInfo.h"
+#include "AArch64ISelLowering.h"
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c-rhodes wrote:

not immediately obvious to me why you need this now?

https://github.com/llvm/llvm-project/pull/178692