[Bug middle-end/89972] [8/9 Regression] ICE in expand_call, at calls.c:4229

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89972

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ABI
                 CC|                            |andi-gcc at firstfloor dot org,
                   |                            |hjl.tools at gmail dot com,
                   |                            |hubicka at gcc dot gnu.org,
                   |                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Guess this is primarily an ABI issue, whether such arguments shouldn't be
passed at all even if they have the extra alignments or not.
On:
struct S { long a[0] __attribute__ ((aligned (32))); };
void bar (long double, struct S, long double);
void foo (void)
{
  struct S b;
  bar (8.0L, b, 9.0L);
}
clang doesn't agree with icc, clang passes 8.0L at rsp and 9.0 at rsp+16, while
icc at rsp and rsp+32 (and gcc ICEs).