Viewing file:  stack-check-17.c (1.16 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O2 -fstack-clash-protection -mtune=generic -fomit-frame-pointer" } */
/* { dg-require-effective-target supports_stack_clash_protection } */
/* { dg-skip-if "" { *-*-* } { "-fstack-protector*" } { "" } } */
int x0, x1;
void f1 (void);
void f2 (int, int);
__attribute__ ((noreturn))
void
f3 (void)
{
int y0 = x0;
int y1 = x1;
f1 ();
f2 (y0, y1);
while (1);
}
/* Verify no explicit probes. */
/* { dg-final { scan-assembler-not "or\[ql\]" } } */
/* We also want to verify we did not use a push/pop sequence
to probe *sp as the callee register saves are sufficient
to probe *sp.
y0/y1 are live across the call and thus must be allocated
into either a stack slot or callee saved register. The former
would be rather dumb. So assume it does not happen.
So search for two/four pushes for the callee register saves/argument
pushes and no pops (since the function has no reachable epilogue). */
/* { dg-final { scan-assembler-times "push\[ql\]" 2 { target { ! ia32 } } } } */
/* { dg-final { scan-assembler-times "push\[ql\]" 4 { target { ia32 } } } } */
/* { dg-final { scan-assembler-not "pop" } } */
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