https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117098
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
CC| |liuhongt at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Last reconfirmed| |2024-10-12
Summary|Tail call doesn't work for |Tail call doesn't work in
|x32 |some cases
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> ---
It also happens with x86-64:
[hjl@gnu-tgl-3 pr17098]$ cat x.c
struct A { int a[13]; };
int baz (int a, int b, int c, void *p, struct A s);
int
foo (int a, int b, int c, void *p, struct A s)
{
return baz (a, b, c, p, s);
}
[hjl@gnu-tgl-3 pr17098]$ make CC=gcc
gcc -O2 -S x.c
[hjl@gnu-tgl-3 pr17098]$ cat x.s
.file "x.c"
.text
.p2align 4
.globl foo
.type foo, @function
foo:
.LFB0:
.cfi_startproc
subq $72, %rsp
.cfi_def_cfa_offset 80
movdqu 80(%rsp), %xmm0
movl 128(%rsp), %eax
movups %xmm0, (%rsp)
movdqu 96(%rsp), %xmm0
movl %eax, 48(%rsp)
movups %xmm0, 16(%rsp)
movdqu 112(%rsp), %xmm0
movups %xmm0, 32(%rsp)
call baz
addq $72, %rsp
.cfi_def_cfa_offset 8
ret
.cfi_endproc
.LFE0:
.size foo, .-foo
.ident "GCC: (GNU) 14.2.1 20240912 (Red Hat 14.2.1-3)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-tgl-3 pr17098]$
