llvm dev - Oct 2016 - Clang error to emit llvm code

Hello All,

I want to obtain the LLVM IR of a program (pixel-test.c from pixman library), I
am using the following command to obtain the LLVM IR representation of this
program:

 $ clang -fsyntax-only ./test/pixel-test.c  -S -emit-llvm -o pixel-test.ll 

However I get the following error:

./test/utils-prng.h:137:32: error: can't convert between vector values of
different size ('uint32x4' and 'int')
    uint32x4 e = x->a - ((x->b << 27) + (x->b >> (32 -
27)));
                          ~~~~ ^  ~~
./test/utils-prng.h:137:47: error: can't convert between vector values of
different size ('uint32x4' and 'int')
    uint32x4 e = x->a - ((x->b << 27) + (x->b >> (32 -
27)));
                                         ~~~~ ^  ~~~~~~~~~
./test/utils-prng.h:138:26: error: can't convert between vector values of
different size ('uint32x4' and 'int')
    x->a = x->b ^ ((x->c << 17) ^ (x->c >> (32 - 17)));
                    ~~~~ ^  ~~
./test/utils-prng.h:138:41: error: can't convert between vector values of
different size ('uint32x4' and 'int')
    x->a = x->b ^ ((x->c << 17) ^ (x->c >> (32 - 17)));

It looks like clang is having trouble to convert a vector data type to an
integer. Is there a patch/workaround to be able to generate the LLVM IR?
 I am using clang 3.9, I am attaching the source file that causes the error.
  
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Hi Raul,

On 13 October 2016 at 08:13, Raul Garcia via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
> ./test/utils-prng.h:137:32: error: can't convert between vector values
of different size ('uint32x4' and 'int')
>     uint32x4 e = x->a - ((x->b << 27) + (x->b >> (32 -
27)));
This looks like a bug in Clang 3.9. It seems to have been fixed in
r281669 (https://github.com/llvm-mirror/clang/commit/38edf4). It might
be worth trying to get it into 3.9.1 when that process starts.

Cheers.

Tim.

> On Oct 13, 2016, at 9:24 AM, Tim Northover via llvm-dev <llvm-dev at
lists.llvm.org> wrote:
> 
> Hi Raul,
> 
> On 13 October 2016 at 08:13, Raul Garcia via llvm-dev
> <llvm-dev at lists.llvm.org> wrote:
>> ./test/utils-prng.h:137:32: error: can't convert between vector
values of different size ('uint32x4' and 'int')
>>    uint32x4 e = x->a - ((x->b << 27) + (x->b >>
(32 - 27)));
> 
> This looks like a bug in Clang 3.9. It seems to have been fixed in
> r281669 (https://github.com/llvm-mirror/clang/commit/38edf4). It might
> be worth trying to get it into 3.9.1 when that process starts.
That process started the day we released 3.9 AFAIK.

I think Tom (+CC) would like a bugzilla entry for every cherry-pick request.

— 
Mehdi