| /* { dg-require-effective-target vect_int } */ |
| |
| #include <stdarg.h> |
| #include "tree-vect.h" |
| |
| #define N 64 |
| |
| #define DOT1 43680 |
| #define DOT2 43680 |
| #define DOT3 43680 |
| |
| unsigned char X[N] __attribute__ ((__aligned__(16))); |
| unsigned char Y[N] __attribute__ ((__aligned__(16))); |
| |
| /* char->short->int dot product. |
| Detected as a dot-product pattern. |
| Should be vectorized on targets that support dot-product for unsigned chars. |
| */ |
| unsigned int |
| foo1(int len) { |
| int i; |
| unsigned int result = 0; |
| unsigned short prod; |
| |
| for (i=0; i<len; i++) { |
| prod = X[i] * Y[i]; |
| result += prod; |
| } |
| return result; |
| } |
| |
| /* char->short->short dot product. |
| Detected as a dot-product pattern. |
| Should be vectorized on targets that support dot-product for unsigned chars. |
| This test currently fails to vectorize on targets that support dot-product |
| of chars only when the accumulator is int. |
| */ |
| unsigned short |
| foo2(int len) { |
| int i; |
| unsigned short result = 0; |
| |
| for (i=0; i<len; i++) { |
| result += (unsigned short)(X[i] * Y[i]); |
| } |
| return result; |
| } |
| |
| /* char->int->int dot product. |
| Not detected as a dot-product. |
| Doesn't get vectorized due to presence of type converisons. */ |
| unsigned int |
| foo3(int len) { |
| int i; |
| unsigned int result = 0; |
| |
| for (i=0; i<len; i++) { |
| result += (X[i] * Y[i]); |
| } |
| return result; |
| } |
| |
| int main (void) |
| { |
| unsigned int dot1, dot3; |
| unsigned short dot2; |
| int i; |
| |
| check_vect (); |
| |
| for (i=0; i<N; i++) { |
| X[i] = i; |
| Y[i] = 64-i; |
| } |
| |
| dot1 = foo1 (N); |
| if (dot1 != DOT1) |
| abort (); |
| |
| dot2 = foo2 (N); |
| if (dot2 != DOT2) |
| abort (); |
| |
| dot3 = foo3 (N); |
| if (dot3 != DOT3) |
| abort (); |
| |
| return 0; |
| } |
| |
| /* { dg-final { scan-tree-dump-times "vect_recog_dot_prod_pattern: detected" 2 "vect" } } */ |
| |
| /* When the vectorizer is enhanced to vectorize foo2 (accumulation into short) for |
| targets that support accumulation into int (powerpc, ia64) we'd have: |
| dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target vect_udot_qi } } |
| */ |
| /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { xfail *-*-* } } } */ |
| /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { target vect_udot_qi } } } */ |
| |
| /* { dg-final { cleanup-tree-dump "vect" } } */ |
| |