| /* { 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" } } */ |
| |
