Yes this problem was found with Christophe's neon intrinsic tests which
are awaiting approval. The problem was found by passing a value of zero
to the vclz vector intrinsic.
On 10/09/2014 12:11 AM, Andrew Pinski wrote:
On Thu, Oct 9, 2014 at 12:05 AM, Michael Collison
<michael.colli...@linaro.org> wrote:
The CLZ_DEFINED_VALUE_AT_ZERO macro is harded to return 32. For the vector
intrinsic vclz this is incorrect and should return the value eight. The
CTZ_DEFINED_VALUE_AT_ZERO has the same issue.
Do you have a testcase? I almost think you should have a testcase
which causes the constant folding. Though I don't think there is
constant folding of the vector clz/ctz happening.
Thanks,
Andrew
Tested on arm-linux-gnueabihf, arm-linux-gnueabi.
2014-10-08 Michael Collison <michael.colli...@linaro.com>
* config/arm/arm.h (CLZ_DEFINED_VALUE_AT_ZERO) : Update
to support vector modes
(CTZ_DEFINED_VALUE_AT_ZERO): Ditto
--
Michael Collison
Linaro Toolchain Working Group
michael.colli...@linaro.org
--
Michael Collison
Linaro Toolchain Working Group
michael.colli...@linaro.org
