1 /* { dg-do compile } */
2 /* { dg-options "-Ofast -fdump-tree-optimized-raw" } */
3
4 float
extract_square(float * a,float * b,float x,float y)5 extract_square (float *a, float *b, float x, float y)
6 {
7 *a = 3 / (y * y);
8 *b = 5 / (y * y);
9
10 return x / (y * y);
11 }
12
13 /* Don't expect the 'powmult' (calculation of y * y)
14 to be deleted until a later pass, so look for one
15 more multiplication than strictly necessary. */
16 float
extract_recip(float * a,float * b,float x,float y,float z)17 extract_recip (float *a, float *b, float x, float y, float z)
18 {
19 *a = 7 / y;
20 *b = x / (y * y);
21
22 return z / y;
23 }
24
25 /* 4 multiplications in 'extract_square', and 4 in 'extract_recip'. */
26 /* { dg-final { scan-tree-dump-times "mult_expr" 8 "optimized" } } */
27
28 /* 1 division in 'extract_square', 1 division in 'extract_recip'. */
29 /* { dg-final { scan-tree-dump-times "rdiv_expr" 2 "optimized" } } */
30