| /* { dg-do compile } */ |
| #include <altivec.h> |
| extern vector signed short image[]; |
| extern vector signed short band[]; |
| |
| #define load(a,b) vec_ld((b)*16, a) |
| #define store(v,a,b) vec_st(v,(b)*16,a) |
| |
| void |
| haar (vector signed char a, vector signed char b, vector signed char c, |
| vector signed char d, unsigned int N, int XX) |
| { |
| unsigned int i; |
| vector unsigned char high, low; |
| vector signed int zero = ((vector signed int){0,0,0,0}); |
| |
| for (i = 0; i < N; i++) { |
| high = (vector unsigned char) (vec_vmrghh (load(image, i+XX), |
| load(image, i))); |
| low = (vector unsigned char) (vec_vmrglh (load(image, i+XX), |
| load(image, i))); |
| |
| store (vec_vpkswss (vec_vmsummbm (a, high, zero), |
| vec_vmsummbm (a, low, zero)), |
| band, i); |
| store (vec_vpkswss (vec_vmsummbm (b, high, zero), |
| vec_vmsummbm (b, low, zero)), |
| band, i+1); |
| store(vec_vpkswss (vec_vmsummbm (c, high, zero), |
| vec_vmsummbm (c, low, zero)), |
| band, i+2); |
| store(vec_vpkswss (vec_vmsummbm (d, high, zero), |
| vec_vmsummbm (d, low, zero)), |
| band, i+3); |
| } |
| } |