On Thu, Dec 19, 2019 at 04:01:31PM +0100, Jan Hubicka wrote:
> I now get build failure of Firefox with LTO due to:
>
> movabsq $.LC12, %rax
>
> which is output by:
>
> (insn:TI 468 3 849 2 (parallel [
>
> (set (mem/v/f/c:DI (plus:DI (reg/f:DI 6 bp)
>
> (const_int -56 [0xffffffffffffffc8])) [1 D.22910+0 S8
> A64])
> (unspec:DI [
>
> (mem/v/f:DI (const_int 40 [0x28]) [0
> MEM[(<address-space-1> long unsigned int *)40B]+0 S8 A64 AS1])
> ] UNSPEC_SP_SET))
>
> (set (reg:DI 0 ax [157])
>
> (symbol_ref/f:DI ("*.LC12") [flags 0x2] <var_decl
> 0x7ffff56ac870 *.LC12>))
> (clobber (reg:CC 17 flags))
>
> ]) 1042 {*stack_protect_set_3}
>
> (expr_list:REG_UNUSED (reg:CC 17 flags)
>
> (nil)))
>
>
> I suppose we need to be more careful about the symbolic operands for
> movabs?
Is that -fPIC or -fPIE or -fno-pic?
What were the two insns before peephole2?
Jakub
