modernc.org/ccgo/v3@v3.16.14/lib/testdata/gcc-9.1.0/gcc/testsuite/gcc.c-torture/execute/20050316-2.c (about) 1 /* This testcase generates MMX instructions together with x87 instructions. 2 Currently, there is no "emms" generated to switch between register sets, 3 so the testcase fails for targets where MMX insns are enabled. */ 4 /* { dg-options "-mno-mmx -Wno-psabi" { target { x86_64-*-* i?86-*-* } } } */ 5 6 extern void abort (void); 7 8 typedef int V2SI __attribute__ ((vector_size (8))); 9 typedef unsigned int V2USI __attribute__ ((vector_size (8))); 10 typedef float V2SF __attribute__ ((vector_size (8))); 11 typedef short V2HI __attribute__ ((vector_size (4))); 12 typedef unsigned int V2UHI __attribute__ ((vector_size (4))); 13 14 long long 15 test1 (V2SF x) 16 { 17 return (long long) (V2SI) x; 18 } 19 20 long long 21 test2 (V2SF x) 22 { 23 return (long long) x; 24 } 25 26 long long 27 test3 (V2SI x) 28 { 29 return (long long) (V2SF) x; 30 } 31 32 int 33 main (void) 34 { 35 if (sizeof (short) != 2 || sizeof (int) != 4 || sizeof (long long) != 8) 36 return 0; 37 38 V2SF x = { 2.0, 2.0 }; 39 union { long long l; float f[2]; int i[2]; } u; 40 u.l = test1 (x); 41 if (u.f[0] != 2.0 || u.f[1] != 2.0) 42 abort (); 43 44 V2SF y = { 6.0, 6.0 }; 45 u.l = test2 (y); 46 if (u.f[0] != 6.0 || u.f[1] != 6.0) 47 abort (); 48 49 V2SI z = { 4, 4 }; 50 u.l = test3 (z); 51 if (u.i[0] != 4 || u.i[1] != 4) 52 abort (); 53 return 0; 54 }