File: peephole2-eq-andhi.c

package info (click to toggle)
gcc-arm-none-eabi 15%3A12.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 959,712 kB
  • sloc: cpp: 3,275,382; ansic: 2,061,766; ada: 840,956; f90: 208,513; makefile: 76,132; asm: 73,433; xml: 50,448; exp: 34,146; sh: 32,436; objc: 15,637; fortran: 14,012; python: 11,991; pascal: 6,787; awk: 4,779; perl: 3,054; yacc: 338; ml: 285; lex: 201; haskell: 122
file content (33 lines) | stat: -rw-r--r-- 810 bytes parent folder | download | duplicates (2) 
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
 
/* { dg-do compile } */
/* { dg-options "-fdump-rtl-peephole2 -dp" } */
/* { dg-skip-if "code quality test" { *-*-* } { "-O0" "-O1" } { "" } } */

typedef int __attribute__ ((mode (HI))) int_t;

void
eq_andhi (int_t *w, int_t *x, int_t *y)
{
  int_t v;

  v = *x & *y;
  if (v == 0)
    *w = 1;
  else
    *w = 2;
}

/* Expect assembly like:

	bitw *8(%ap),*12(%ap)		# 50	[c=50]  *bithi_ccz
	jneq .L3			# 40	[c=26]  *branch_ccz
	movw $1,%r0			# 36	[c=4]  *movhi
	movw %r0,*4(%ap)		# 34	[c=4]  *movhi
	ret				# 46	[c=0]  return
.L3:

 */

/* { dg-final { scan-rtl-dump-times "Splitting with gen_peephole2" 1 "peephole2" } } */
/* { dg-final { scan-assembler-not "\t(cmpz?|tst). " } } */
/* { dg-final { scan-assembler "bithi\[^ \]*_ccz(/\[0-9\]+)?\n" } } */
/* { dg-final { scan-assembler "branch_ccz\n" } } */