gas feature: support for larger bit immediates in bt

[H.J. Lu]

On Wed, Sep 19, 2007 at 02:12:39PM +0200, Andi Kleen wrote:
> 
> One feature that gas is currently missing and what would be sometimes nice
> to have is to support offsets >31 in the bt etc. family of instructions
> by folding the value/32 into an byte memory offset.
> 
> e.g. bt $64,(%rax) can be converted to bt $0,8(%rax) 
> 
> The IA32 instruction reference manual even mentions that some assemblers
> support this.

Please open a binutils bug report at

http://www.sourceware.org/bugzilla/


H.J.