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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.target/] [i386/] [mmx-8.c] - Rev 323
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/* PR middle-end/37809 */ /* { dg-do run } */ /* { dg-options "-O2 -mmmx" } */ #include <mmintrin.h> #include "mmx-check.h" // Various tests of cases where it is incorrect to optimise vectors as if they // were integers of the same width. extern void abort (void); void __attribute__ ((noinline)) Sshift() { volatile __m64 y = (__m64) 0xffffffffll; __m64 x = y & (__m64) 0xffffffffll; x = _m_psradi (x, 1); x &= (__m64) 0x80000000ll; if (0 == (long long) x) abort(); } #define SHIFTU(F,B,S,T) \ void F() \ { \ volatile __m64 y = (__m64) 0ll; \ __m64 x = y | (__m64) (1llu << B); \ if (S > 0) \ x = _m_pslldi (x, S); \ else \ x = _m_psrldi (x, -S); \ if (T > 0) \ x = _m_pslldi (x, T); \ else \ x = _m_psrldi (x, -T); \ x &= (__m64) (1llu << (B + S + T)); \ if ((long long) x) \ abort(); \ } SHIFTU (shiftU1, 31, 1, -1) SHIFTU (shiftU2, 32, -1, 1) SHIFTU (shiftU3, 31, 1, 0) SHIFTU (shiftU4, 32, -1, 0) void __attribute__ ((noinline)) add_1() { volatile long long ONE = 1; long long one = ONE; __m64 a = (__m64) one; __m64 b = (__m64) -one; __m64 c = a + b; if (0 == (long long) c) abort(); } void __attribute__ ((noinline)) add_2() { volatile long long ONE = 1; long long one = ONE; __m64 a = (__m64) one; __m64 b = (__m64) -one; __m64 c = _m_paddd (a, b); if (0 == (long long) c) abort(); } void __attribute__ ((noinline)) mult_1() { volatile __m64 y = (__m64) 0ll; __m64 x = y | (__m64) (1ll << 32); x = x * (__m64) 1ll; x &= (__m64) (1ll << 32); if (0 != (long long) x) abort(); } void __attribute__ ((noinline)) mult_2() { volatile int foo = 1; unsigned long long one = foo & 1; __m64 x = (__m64) (one << 16); x *= x; x &= (__m64) (1ll << 32); if (0 != (long long) x) abort(); } void __attribute__ ((noinline)) mult_3() { volatile __m64 y = (__m64) (1ll << 32); __m64 a = y; __m64 b = y * (__m64) 1ll; if (((long long) a) == (long long) b) abort(); } void __attribute__ ((noinline)) div_1() { volatile __m64 y = (__m64) 0ll; __m64 x = y | (__m64) (1ull << 32); x |= (__m64) 1ull; x = x / x; if (1ll == (long long) x) abort(); } void mmx_test (void) { Sshift(); shiftU1(); shiftU2(); shiftU3(); shiftU4(); add_1(); add_2(); mult_1(); mult_2(); mult_3(); div_1(); }
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