On Mon, Mar 7, 2022 at 6:23 AM Jakub Jelinek wrote:
>
> On Mon, Mar 07, 2022 at 05:57:40AM -0800, H.J. Lu via Gcc-patches wrote:
> > --- a/gcc/config/i386/i386.cc
> > +++ b/gcc/config/i386/i386.cc
> > @@ -9444,9 +9444,8 @@ ix86_expand_epilogue (int style)
> > rtx sa = EH_RETURN_STACKADJ_RT
On Mon, Mar 07, 2022 at 05:57:40AM -0800, H.J. Lu via Gcc-patches wrote:
> --- a/gcc/config/i386/i386.cc
> +++ b/gcc/config/i386/i386.cc
> @@ -9444,9 +9444,8 @@ ix86_expand_epilogue (int style)
> rtx sa = EH_RETURN_STACKADJ_RTX;
> rtx_insn *insn;
>
> - /* %ecx can't be used
Since eh_return doesn't work with stack realignment, disable SSE on
unwind-c.c and unwind-dw2.c to avoid stack realignment with the 4-byte
incoming stack to avoid SSE usage which is caused by
commit 609e8c492d62d92465460eae3d43dfc4b2c68288
Author: H.J. Lu
Date: Sat Feb 26 14:17:23 2022 -0800
