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| author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
|---|---|---|
| committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
| commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
| tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /gcc/testsuite/gcc.dg/tree-ssa/vrp51.c | |
| download | cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2 cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz | |
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Diffstat (limited to 'gcc/testsuite/gcc.dg/tree-ssa/vrp51.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/vrp51.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/tree-ssa/vrp51.c b/gcc/testsuite/gcc.dg/tree-ssa/vrp51.c new file mode 100644 index 000000000..5f1cafb0a --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/vrp51.c @@ -0,0 +1,58 @@ +/* PR tree-optimization/28632 */ +/* { dg-do compile } */ +/* { dg-options "-O2 -ftree-vrp" } */ + +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__("vrp.bug.always.true"); + /* VRP must not think that this is constant. */ + if (__builtin_constant_p ((a|b) >= 0x10000)) + __asm__("vrp.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__("vrp.bug.always.true"); + /* VRP must not think that this is constant true. */ + if (__builtin_constant_p (n & 0x00001)) + __asm__("vrp.bug.not.always.true"); + /* Out of range, always evaluates to constant false. */ + if (!__builtin_constant_p (n & 0x01000)) + __asm__("vrp.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__("vrp.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__("vrp.bug.always.true"); + /* VRP must not think that this is always true. */ + if (__builtin_constant_p ((a|b) >= 0x10000)) + __asm__("vrp.bug.not.always.true"); +} + +/* { dg-final { scan-assembler-not "vrp\\\.bug\\\." } } */ |