https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83735
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
I am testing this patch:
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 8696f931806..8558995e067 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -11259,7 +11259,8 @@ ix86_compute_frame_layout (void)
/* Calculate the size of the va-arg area (not including padding, if any).
*/
frame->va_arg_size = ix86_varargs_gpr_size + ix86_varargs_fpr_size;
- if (stack_realign_fp)
+ /* Adjust stack_realign_offset for stack_alignment_needed. */
+ if ((offset % stack_alignment_needed) != 0)
{
/* We may need a 16-byte aligned stack for the remainder of the
register save area, but the stack frame for the local function
