[LLVMdev] prevent frontend from emitting i64

[Ruiling Song]

LLVM contains some optimization pass that will generate instructions
operate on i64 or even i128 and more. The upstream backend utilize the
legalize stage that can break it into instructions with smaller integer
types if the target machine does not support that large integer type. There
seems no way to prevent clang generate i64 instruction. Are you developing
a new backend?

2015-01-28 17:55 GMT+08:00 Alon Shaltiel (ashaltie) <ashaltie at cisco.com>:

>   Hello,
>
> Is there a way to make clang create an IR file that doesn’t use 64 bit
> integers? My C code doesn’t use any 64bit types but still “clang –c
> –emit-llvm …” emits code that contains i64’s.
>
>
>
> Thanks,
>
> Alon
>
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