File: recip-5.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A8-2019-q3-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 571,828 kB
  • sloc: ansic: 2,937,651; cpp: 881,644; ada: 597,189; makefile: 65,528; asm: 56,499; xml: 46,621; exp: 24,747; sh: 19,684; python: 7,256; pascal: 4,370; awk: 3,497; perl: 2,695; yacc: 316; ml: 285; f90: 234; lex: 198; objc: 194; haskell: 119
file content (30 lines) | stat: -rw-r--r-- 828 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
 
/* { dg-options "-O1 -funsafe-math-optimizations -ftrapping-math -fdump-tree-recip -fdump-tree-optimized" } */
/* { dg-do compile } */
/* { dg-warning "-fassociative-math disabled" "" { target *-*-* } 0 } */

/* Test the reciprocal optimizations together with trapping math.  */

extern int f2();

double f1(double y, double z, double w, double j, double k)
{
  double b, c, d, e, f, g;

  if (f2 ())
    /* inserts one division here */
    b = 1 / y, c = z / y, d = j / y;
  else
    /* one division here */
    b = 3 / y, c = w / y, d = k / y;

  /* and one here, that should be removed afterwards but is not right now */
  e = b / y;
  f = c / y;
  g = d / y;

  return e + f + g;
}

/* { dg-final { scan-tree-dump-times " / " 3 "recip" } } */
/* { dg-final { scan-tree-dump-times " / " 2 "optimized" { xfail *-*-* } } } */