[Bug target/107841] Incorrect generation of the function's epilogue code when there is a _builtin_alloca call.

[avo2000 at mail dot ru via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107841

--- Comment #2 from Alexander <avo2000 at mail dot ru> ---
Source code:

void qq(int a) {
    char *s = alloca(128);
    sprintf(s,"qq %d",3);
}

Generated code:

0000040c <_qq>:
     40c:       1166            mov     r5, -(sp)
     40e:       1185            mov     sp, r5
     410:       65c6 ff80       add     $-200, sp
     414:       1180            mov     sp, r0
     416:       15e6 0003       mov     $3, -(sp)
     41a:       15e6 1868       mov     $14150, -(sp)
     41e:       1026            mov     r0, -(sp)
     420:       09f7 0326       jsr     pc, 74a <_sprintf>
     424:       65c6 0006       add     $6, sp
     428:       1585            mov     (sp)+, r5
     42a:       0087            rts     pc


The command "mov r5,sp" should be at the address 424