File: ssa-pre-28.c

package info (click to toggle)
gcc-riscv64-unknown-elf 8.3.0.2019.08%2Bdfsg-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 680,956 kB
  • sloc: ansic: 3,237,715; cpp: 896,882; ada: 772,854; f90: 144,254; asm: 68,788; makefile: 67,456; sh: 29,743; exp: 28,045; objc: 15,273; fortran: 11,885; python: 7,369; pascal: 5,375; awk: 3,725; perl: 2,872; yacc: 316; xml: 311; ml: 285; lex: 198; haskell: 122
file content (22 lines) | stat: -rw-r--r-- 576 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
 
/* PR37997 */
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-pre-details -fno-code-hoisting" } */

int foo (int i, int b, int result)
{
  int mask;
  if (b)
    mask = -2;
  else
    mask = 0;
  result = i + 1;
  result = result & mask;
  return result;
}

/* We should insert i + 1 into the if (b) path as well as the simplified
   i + 1 & -2 expression.  And do replacement with two PHI temps.  */
/* With hoisting enabled we'd hoist i + 1 to before the if, retaining
   only one PHI node.  */

/* { dg-final { scan-tree-dump-times "with prephitmp" 2 "pre" } } */