https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89993
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
hjl@gnu-cfl-1 pr89993]$ gcc -mstackrealign -O2 -S b.c
[hjl@gnu-cfl-1 pr89993]$ cat b.s
.file "b.c"
.text
.p2align 4,,15
.globl tst1Foo
.type tst1Foo, @function
tst1Foo:
.LFB526:
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
andq $-16, %rsp <<<<<<<<<< Align stack without
-mincoming-stack-boundary=4
subq $16, %rsp
movq %rsp, %rcx
call tst2Foo
leave
.cfi_def_cfa 7, 8
ret
.cfi_endproc
.LFE526:
.size tst1Foo, .-tst1Foo
.ident "GCC: (GNU) 8.3.1 20190311 (Red Hat 8.3.1-3)"
.section .note.GNU-stack,"",@progbits
[hjl@gnu-cfl-1 pr89993]$
