URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [gcc.dg/] [strlenopt-17g.c] - Rev 716
Go to most recent revision | Compare with Previous | Blame | View Log
/* This test needs runtime that provides stpcpy function. */ /* { dg-do run { target *-*-linux* } } */ /* { dg-options "-O2 -fdump-tree-strlen" } */ #define USE_GNU #include "strlenopt.h" __attribute__((noinline, noclone)) int foo (const char *p) { static int c; const char *q[] = { "123498765abcde", "123498765..", "129abcde", "129abcde" }; if (strcmp (p, q[c]) != 0) abort (); return c++; } __attribute__((noinline, noclone)) void bar (const char *p, const char *q) { size_t l; /* This strlen stays. */ char *a = __builtin_alloca (strlen (p) + 50); /* strcpy can be optimized into memcpy. */ strcpy (a, p); /* strcat into stpcpy. */ strcat (a, q); /* This strlen can be optimized away. */ l = strlen (a); /* This becomes memcpy. */ strcat (a, "abcde"); if (!foo (a)) /* And this one too. */ strcpy (a + l, ".."); foo (a); } int main () { const char *volatile s1 = "1234"; const char *volatile s2 = "98765"; const char *volatile s3 = "12"; const char *volatile s4 = "9"; bar (s1, s2); bar (s3, s4); return 0; } /* { dg-final { scan-tree-dump-times "strlen \\(" 1 "strlen" } } */ /* { dg-final { scan-tree-dump-times "memcpy \\(" 3 "strlen" } } */ /* { dg-final { scan-tree-dump-times "mempcpy \\(" 0 "strlen" } } */ /* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen" } } */ /* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen" } } */ /* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */ /* { dg-final { scan-tree-dump-times "stpcpy \\(" 1 "strlen" } } */ /* { dg-final { cleanup-tree-dump "strlen" } } */
Go to most recent revision | Compare with Previous | Blame | View Log