[llvm-commits] [llvm-gcc-4.2] r62076 - /llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

Duncan Sands baldrick at free.fr
Wed Jan 14 00:45:29 PST 2009

Hi Evan,

> This gets translated into low level pointer arithmetics, right? Later  
> on llvm-convert casts it to i8*:
> ArrayAddr = BitCastToType(ArrayAddr,  
> PointerType::getUnqual(Type::Int8Ty));
> Is there a reason why we can't just give it the alignment of i8?

I'm not sure what you are saying.  Consider &a[1].  This gets turned
into pointer arithmetic or a GEP on &a.  The alignment of the resulting
lvalue should be the alignment of a[1], i.e. the original alignment of
the array itself adjusted by the size of 1 array element.  I will try
to find time to cook up an example.



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