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131
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1 /* { dg-do compile } */
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2 /* { dg-options "-Ofast -fdump-tree-optimized-raw" } */
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3
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4 float
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5 extract_square (float *a, float *b, float x, float y)
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6 {
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7 *a = 3 / (y * y);
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8 *b = 5 / (y * y);
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9
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10 return x / (y * y);
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11 }
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12
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13 /* Don't expect the 'powmult' (calculation of y * y)
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14 to be deleted until a later pass, so look for one
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15 more multiplication than strictly necessary. */
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16 float
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17 extract_recip (float *a, float *b, float x, float y, float z)
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18 {
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19 *a = 7 / y;
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20 *b = x / (y * y);
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21
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22 return z / y;
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23 }
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24
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25 /* 4 multiplications in 'extract_square', and 4 in 'extract_recip'. */
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26 /* { dg-final { scan-tree-dump-times "mult_expr" 8 "optimized" } } */
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27
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28 /* 1 division in 'extract_square', 1 division in 'extract_recip'. */
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29 /* { dg-final { scan-tree-dump-times "rdiv_expr" 2 "optimized" } } */
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