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Re: Possible gas regression


2010/9/5 NightStrike <nightstrike@gmail.com>:
> On Sun, Sep 5, 2010 at 1:42 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
>> On Sun, Sep 5, 2010 at 10:19 AM, NightStrike <nightstrike@gmail.com> wrote:
>>> We noticed while compiling mingw-w64 using binutils CVS HEAD this
>>> morning the following failure:
>>>
>>> x86_64-w64-mingw32-gcc -DHAVE_CONFIG_H -I.
>>> -I../../../build/mingw/mingw-w64-crt ?-m64
>>> -I../../../build/mingw/mingw-w64-crt/include -D_CRTBLD
>>> -I/buildbot/pac0602-cygwin/cygwin-x86-x86_64/build/build/root/x86_64-w64-mingw32/include
>>> ?-g -O2 -MT math/lib64_libmingwex_a-scalbnl.o -MD -MP -MF
>>> math/.deps/lib64_libmingwex_a-scalbnl.Tpo -c -o
>>> math/lib64_libmingwex_a-scalbnl.o `test -f 'math/scalbnl.S' || echo
>>> '../../../build/mingw/mingw-w64-crt/'`math/scalbnl.S
>>> scalbnl.S: Assembler messages:
>>> scalbnl.S:20: Error: operand type mismatch for `and'
>>>
>>> scalbnl.S is:
>>>
>> ...
>>> ? ? ? ?andq ? ?$0xffffffff, %r8
>>
>> AND takes an immediate of [-0x80,0x7f] or [-0x80000000,0x7fffffff].
>> 0xffffffff is out of range.
>>
>> --
>> H.J.
>>
>
> Using H.J's suggested fix of "andq $-1, %r8". ?Thanks, HJ!
>

Hmm, how can be 0xffffffff out of range for an andq? I understand that
an operand 0xffffffffffffffff (what is -1) would be out of range.

Kai

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