File: clztest.c

package info (click to toggle)
gdb-doc 8.2.1-1
  • links: PTS, VCS
  • area: non-free
  • in suites: buster
  • size: 224,856 kB
  • sloc: ansic: 1,935,878; asm: 341,756; exp: 146,402; makefile: 56,625; sh: 23,696; cpp: 20,830; yacc: 12,914; perl: 5,331; ada: 4,977; python: 4,617; xml: 4,176; pascal: 3,134; lisp: 1,527; cs: 879; lex: 620; f90: 479; sed: 228; awk: 140; objc: 134; fortran: 43
file content (33 lines) | stat: -rw-r--r-- 680 bytes parent folder | download | duplicates (33) 
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 run { target { x86_64-*-* && lp64 } } } */
/* { dg-options "-g" } */

volatile int vv;

__attribute__((noinline, noclone)) long
foo (long x)
{
  long f = __builtin_clzl (x);
  long g = f;
  asm volatile ("" : "+r" (f));
  vv++;		/* { dg-final { gdb-test 12 "g" "43" } } */
  return f;	/* { dg-final { gdb-test 12 "f" "43" } } */
}

__attribute__((noinline, noclone)) long
bar (long x)
{
  long f = __builtin_clzl (x);
  long g = f;
  asm volatile ("" : "+r" (f));
  vv++;		/* { dg-final { gdb-test 22 "g" "33" } } */
  return f;	/* { dg-final { gdb-test 22 "f" "33" } } */
}

int
main ()
{
  long x = vv;
  foo (x + 0x123456UL);
  bar (x + 0x7fffffffUL);
  return 0;
}