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111
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1 /* { dg-do compile } */
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2 /* { 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" } */
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3 /* { dg-require-effective-target supports_stack_clash_protection } */
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131
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4 /* { dg-skip-if "" { *-*-* } { "-fstack-protector*" } { "" } } */
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111
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5
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6
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7 extern void foo (char *);
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8 extern void bar (void);
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9
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10
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11 /* This is a leaf with a frame that is large enough to require probing with
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12 a residual allocation, but small enough to probe inline. */
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13 void
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14 f4 (void)
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15 {
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16 char buf[4096 + 512];
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17 asm volatile ("" : : "g" (&buf) : "memory");
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18 }
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19
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20
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21 /* This is a non-leaf with a frame large enough to require probing and
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22 a residual allocation, but small enough to probe inline. */
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23 void
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24 f5 (void)
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25 {
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26 char buf[4096 + 512];
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27 foo (buf);
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28 }
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29
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30 /* This is a leaf with a frame that is large enough to require probing with
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31 a loop plus a residual allocation. */
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32 void
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33 f6 (void)
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34 {
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35 char buf[4096 * 10 + 512];
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36 asm volatile ("" : : "g" (&buf) : "memory");
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37 }
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38
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39
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40 /* This is a non-leaf with a frame large enough to require probing with
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41 a loop plus a residual allocation. */
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42 void
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43 f7 (void)
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44 {
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45 char buf[4096 * 10 + 512];
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46 foo (buf);
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47 }
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48
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49 /* { dg-final { scan-rtl-dump-times "Stack clash inline probes" 2 "pro_and_epilogue" } } */
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50 /* { dg-final { scan-rtl-dump-times "Stack clash probe loop" 2 "pro_and_epilogue" } } */
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51 /* { dg-final { scan-rtl-dump-times "Stack clash residual allocation in prologue" 4 "pro_and_epilogue" } } */
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52 /* { dg-final { scan-rtl-dump-times "Stack clash not noreturn" 4 "pro_and_epilogue" } } */
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53
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54 /* { dg-final { scan-rtl-dump-times "Stack clash no frame pointer needed" 4 "pro_and_epilogue" { target { ! frame_pointer_for_non_leaf } } } } */
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55 /* { dg-final { scan-rtl-dump-times "Stack clash no frame pointer needed" 2 "pro_and_epilogue" { target { frame_pointer_for_non_leaf } } } } */
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56 /* { dg-final { scan-rtl-dump-times "Stack clash frame pointer needed" 2 "pro_and_epilogue" { target { frame_pointer_for_non_leaf } } } } */
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