1 /* { dg-do compile } */ 2 /* { dg-options "-O2 -fno-ipa-bit-cp -fno-early-inlining -fdump-ipa-cp -fdump-tree-optimized" } */ 3 /* { dg-skip-if "No alignment restrictions" { { ! natural_alignment_32 } && { ! natural_alignment_64 } } } */ 4 5 #include <stdint.h> 6 7 extern int fail_the_test(void *); 8 extern int pass_the_test(void *); 9 extern int diversion (void *); 10 11 struct somestruct 12 { 13 void *whee; 14 void *oops; 15 }; 16 17 struct container 18 { 19 struct somestruct first; 20 struct somestruct buf[32]; 21 }; 22 23 static int __attribute__((noinline)) foo(void * p)24foo (void *p) 25 { 26 uintptr_t a = (uintptr_t) p; 27 28 if (a % 4) 29 return fail_the_test (p); 30 else 31 return pass_the_test (p); 32 } 33 34 int bar(void)35bar (void) 36 { 37 struct container c; 38 return foo (c.buf); 39 } 40 41 42 static int through(struct somestruct * p)43through (struct somestruct *p) 44 { 45 diversion (p); 46 return foo (&p[16]); 47 } 48 49 int bar2(void)50bar2 (void) 51 { 52 struct container c; 53 through (c.buf); 54 } 55 56 /* { dg-final { scan-ipa-dump-not "align:" "cp" } } */ 57 /* { dg-final { scan-tree-dump "fail_the_test" "optimized" } } */ 58