Viewing file:  strlenopt-95.c (1.4 KB) -rw-r--r--
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/* Verify strlen results of vector assignments.
{ dg-do compile }
{ dg-options "-O2 -Wall -fdump-tree-optimized" } */
#include "strlenopt.h"
#define V(N) __attribute__ ((vector_size (N)))
typedef V (1) char VC1;
typedef V (2) char VC2;
typedef V (4) char VC4;
typedef V (8) char VC8;
typedef V (16) char VC16;
extern char a[];
#define A(expr) ((expr) ? (void)0 : abort ())
void test_fold (int i)
{
*(VC4*)a = (VC4){ };
A (strlen (a) == 0);
A (!a[1] && !a[2] && !a[3]);
*(VC4*)a = (VC4){ 0, 1 };
A (strlen (a) == 0);
A (a[1] == 1 && !a[2] && !a[3]);
*(VC4*)a = (VC4){ 1 };
A (strlen (a) == 1);
A (!a[1] && !a[2] && !a[3]);
*(VC4*)a = (VC4){ 1, 0, 3 };
A (strlen (a) == 1);
A (!a[1] && a[2] == 3 && !a[3]);
*(VC4*)a = (VC4){ 1, 2 };
A (strlen (a) == 2);
A (!a[2] && !a[3]);
*(VC4*)a = (VC4){ 1, 2, 0, 4 };
A (strlen (a) == 2);
A (!a[2] && a[3] == 4);
*(VC4*)a = (VC4){ 1, 2, 3 };
A (strlen (a) == 3);
A (!a[3]);
*(VC8*)a = (VC8){ 1, 2, 3, 0, 5 };
A (strlen (a) == 3);
*(VC8*)a = (VC8){ 1, 2, 3, 0, 5, 6 };
A (strlen (a) == 3);
*(VC8*)a = (VC8){ 1, 2, 3, 0, 5, 6, 7, 8 };
A (strlen (a) == 3);
A (strlen (a + 1) == 2);
A (strlen (a + 2) == 1);
A (strlen (a + 3) == 0);
A (a[4] == 5 && a[5] == 6 && a[6] == 7 && a[7] == 8);
}
/* { dg-final { scan-tree-dump-not "abort \\(" "optimized" } }
{ dg-final { scan-tree-dump-not "strlen \\(" "optimized" } } */
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