File: ssa-fre-7.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 (36 lines) | stat: -rw-r--r-- 895 bytes parent folder | download | duplicates (6) 
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
31
32
33
34
35
36
 
/* { dg-do compile } */
/* { dg-options "-O -fno-tree-sra -fdump-tree-fre1-details -fdump-tree-optimized" } */
#if (__SIZEOF_INT__ == __SIZEOF_FLOAT__)
typedef int intflt;
#elif (__SIZEOF_LONG__ == __SIZEOF_FLOAT__)
typedef long intflt;
#else
#error Add target support here for type that will union float size
#endif

struct X {
  int i;
  union {
    intflt j;
    intflt k;
    float f;
  } u;
};

intflt foo(intflt j)
{
  struct X a;

  a.u.j = j;
  a.u.f = a.u.f;
  a.u.f = a.u.f;
  a.u.j = a.u.j;
  a.u.f = a.u.f;
  return a.u.k;
}

/* { dg-final { scan-tree-dump-times "Inserted" 1 "fre1" } } */
/* { dg-final { scan-tree-dump-times "Replaced a.u.f with" 3 "fre1" } } */
/* { dg-final { scan-tree-dump-times "Replaced a.u.k with j" 1 "fre1" } } */
/* { dg-final { scan-tree-dump "= VIEW_CONVERT_EXPR<float>\\\(j_" "fre1" } } */
/* { dg-final { scan-tree-dump "return j" "optimized" } } */