[LLVMdev] ptrtoint

[reed kotler]

Thanks.

So what about a fragment like this: (taken from fast-isel.ll in X86 )

define void @ptrtoint_i1(i8* %p, i1* %q) nounwind {
   %t = ptrtoint i8* %p to i1
   store i1 %t, i1* %q
   ret void
}

TIA.

On 09/29/2014 02:16 PM, Duncan P. N. Exon Smith wrote:
>> On Sep 29, 2014, at 1:51 PM, reed kotler <rkotler at mips.com> wrote:
>>
>> What kind of C or C++ code will emit a "ptrtoint" op?
> This C code:
>
>      long ptrtoint(void *p) { return (long)p; }
>
> gives:
>
>      define i64 @ptrtoint(i8* %p) {
>        %1 = ptrtoint i8* %p to i64
>        ret i64 %1
>      }
>
>
>> Also, what causes i1 to be emitted?
> This C++ code:
>
>      bool i1() { return false; }
>
> gives:
>
>      define zeroext i1 @_Z2i1v() {
>        ret i1 false
>      }
>
>
>> Tia.
>>
>> Reed
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