| /* { dg-do compile } */ |
| /* { dg-options "-O2 -fstack-clash-protection -fdump-rtl-pro_and_epilogue -fno-optimize-sibling-calls --param stack-clash-protection-probe-interval=12 --param stack-clash-protection-guard-size=12" } */ |
| /* { dg-require-effective-target supports_stack_clash_protection } */ |
| |
| int f (int *); |
| |
| int |
| g (int a) |
| { |
| return f (&a); |
| } |
| |
| int f1 (void); |
| int f2 (int); |
| |
| int |
| f3 (void) |
| { |
| return f2 (f1 ()); |
| } |
| |
| |
| /* If we have caller implicit probes, then we should not need probes in either callee. |
| Else callees may need probes, particularly if non-leaf functions require a |
| frame/frame pointer. */ |
| /* { dg-final { scan-rtl-dump-times "Stack clash no probe" 2 "pro_and_epilogue" { target caller_implicit_probes } } } */ |
| /* { dg-final { scan-rtl-dump-times "Stack clash inline probe" 1 "pro_and_epilogue" { target { ! caller_implicit_probes } } } } */ |
| /* { dg-final { scan-rtl-dump-times "Stack clash no probe" 1 "pro_and_epilogue" { target { ! caller_implicit_probes } } } } */ |
| |
| /* Neither of these functions are a nonreturn function. */ |
| /* { dg-final { scan-rtl-dump-times "Stack clash not noreturn" 2 "pro_and_epilogue" } } */ |
| |
| /* If the callee realigns the stack or has a mandatory frame, then both functions |
| have a residual allocation. Else just g() has a residual allocation. */ |
| /* { dg-final { scan-rtl-dump-times "Stack clash residual allocation in prologue" 2 "pro_and_epilogue" } } */ |
| |
| |
| /* If the target has frame pointers for non-leafs, then both functions will |
| need a frame pointer. Otherwise neither should. */ |
| /* { dg-final { scan-rtl-dump-times "Stack clash no frame pointer needed" 2 "pro_and_epilogue" { target { ! frame_pointer_for_non_leaf } } } } */ |
| /* { dg-final { scan-rtl-dump-times "Stack clash frame pointer needed" 2 "pro_and_epilogue" { target { frame_pointer_for_non_leaf } } } } */ |
| /* { dg-final { scan-rtl-dump-times "Stack clash no probe small stack adjustment in prologue" 2 "pro_and_epilogue" { target { aarch64*-*-* } } } } */ |