Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/strlenopt-30.c @ 111:04ced10e8804
gcc 7
author | kono |
---|---|
date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 1830386684a0 |
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/* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-strlen" } */ __attribute__((no_icf)) _Bool f1(char *s) { return __builtin_strstr (s, "hello") == s; } __attribute__((no_icf)) _Bool f2(char *s) { return s == __builtin_strstr (s, "hello"); } __attribute__((no_icf)) _Bool f3(char *s) { return s != __builtin_strstr (s, "hello"); } __attribute__((no_icf)) _Bool f4() { char *foo_f4(void); char *t1 = foo_f4(); char *t2 = __builtin_strstr (t1, "hello"); _Bool t3 = t2 == t1; return t3; } __attribute__((no_icf)) void f5(char *s) { char *t1 = __builtin_strstr (s, "hello"); void foo_f5(void); if (t1 != s) foo_f5(); } /* Do not perform transform, since strlen (t) is unknown. */ __attribute__((no_icf)) _Bool f6(char *s, char *t) { return __builtin_strstr (s, t) == s; } /* Do not perform transform in this case, since t1 doesn't have single use. */ __attribute__((no_icf)) _Bool f7(char *s) { void foo_f7(char *); char *t1 = __builtin_strstr (s, "hello"); foo_f7 (t1); return (t1 == s); } /* { dg-final { scan-tree-dump-times "__builtin_strncmp" 5 "strlen" } } */