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...s reported to be 128 bits wide. The x86-64 and Darwin/i386 ABI define the size of the 80 bits extended type in memory as 16 bytes. In all other i386 ABIs, it's defined as 12 bytes. Delphi and, for compatibility reasons, the Free Pascal Compiler use 10 bytes (although FPC also has a "cextended" type that follows the official ABI for the platform). In FPC we use a [10 x i8] for all memory representations of the non-ABI 80 bits extended type. So ideally, the bitsize of the type should be specifiable separately from the ABI/TypeInfo, as there may be multiple in the code. Jon...

I'm in the process of teaching the Verifier to validate that the size of debug info variable and the described value matches (already caught a couple of bugs, both in my frontend and in LLVM itself). However, I've run into the following: size of passed value (80) does not match size of declared variable (128) call void @llvm.dbg.declare(metadata x86_fp80* %x, metadata !11, metadata