llvm dev - May 2010 - [LLVMdev] SSA failed on alias

Hi guys, I'm new to LLVM and trying demo with the following C code:

int main()
{
  int a = 65535;
  *(1+(char *)a) = 0;
  return a;
}

unfortunately it generates the wrong IR:

define i32 @main() nounwind {
entry:
  store i8 0, i8* inttoptr (i64 65536 to i8*), align 65536
  ret i32 65535
}

seems SSA not applied on memory but incorrectly 'acrossed' by scalar
values.

Is it a bug?
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Did you mean (char*)&a ?

On Sat, May 8, 2010 at 2:21 PM, Rebel Lion <r3831110n at gmail.com>
wrote:
> Hi guys, I'm new to LLVM and trying demo with the following C code:
> int main()
> {
>   int a = 65535;
>   *(1+(char *)a) = 0;
>   return a;
> }
> unfortunately it generates the wrong IR:
> define i32 @main() nounwind {
> entry:
>   store i8 0, i8* inttoptr (i64 65536 to i8*), align 65536
>   ret i32 65535
> }
> seems SSA not applied on memory but incorrectly 'acrossed' by
scalar values.
> Is it a bug?
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