Attachment 21156 Details for Bug 28632 – gcc/testsuite/gcc.dg/tree-ssa/vrp50-PR28632.c

gcc/testsuite/gcc.dg/tree-ssa/vrp50-PR28632.c

vrp50-PR28632.c (text/x-csrc), 1.46 KB, created by Bernhard Reutner-Fischer on 2010-07-09 07:53:11 UTC

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Creator: Bernhard Reutner-Fischer

Created: 2010-07-09 07:53:11 UTC

Size: 1.46 KB

patch

obsolete

>/* { dg-do compile } */
>/* { dg-options "-O2 -ftree-vrp" } */
>/* PR28632 was concerned about VRP understanding bitwise OR and AND expressions.
> */
>
>void v4 (unsigned a, unsigned b)
>{
>  if (a < 0x1000) return;
>  if (a > 0x1000) return;
>  if (b < 0x0110) return;
>  /* constant true.  */
>  if (!__builtin_constant_p ((a|b) >= 0x01000))
>    __asm__("bug.always.true");
>  /* VRP must not think that this is constant.  */
>  if (__builtin_constant_p ((a|b) >= 0x10000))
>    __asm__("bug.not.always.true");
>}
>void u4 (unsigned n)
>{
>  if (n > 0x10111) return;
>  if (n < 0x10101) return;
>  /* always true.  */
>  if (!__builtin_constant_p (n & 0x00100))
>    __asm__("bug.always.true");
>  /* VRP must not think that this is constant true.  */
>  if (__builtin_constant_p (n & 0x00001))
>    __asm__("bug.not.always.true");
>  /* Out of range, always evaluates to constant false.  */
>  if (!__builtin_constant_p (n & 0x01000))
>    __asm__("bug.always.false");
>}
>void u5 (unsigned n)
>{
>  struct s {unsigned exp:8;} x;
>  x.exp = n;
>  if (__builtin_constant_p(((n + 1) & 255) > 1))
>    __asm__("bug.not.always.true");
>}
>void v5 (int a, int b)
>{
>  if (a < 0x1000) return;
>  if (a > 0x1000) return;
>  if (b < 0x0110) return;
>  /* constant true.  */
>  if (!__builtin_constant_p ((a|b) >= 0x01000))
>    __asm__("bug.always.true");
>  /* VRP must not think that this is always true.  */
>  if (__builtin_constant_p ((a|b) >= 0x10000))
>    __asm__("bug.not.always.true");
>}
>/* { dg-final { scan-assembler-not "bug\." } } */

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