Viewing file:  pr43077-1.c (1.37 KB) -rw-r--r--
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/* PR debug/43077 */
/* { dg-do run } */
/* { dg-options "-g -fno-ipa-icf" } */
int varb;
int __attribute__((noinline))
fn1 (void)
{
int vara = (varb == 3); /* { dg-final { gdb-test .+1 "vara" "0" } } */
asm volatile ("" : : "g" (vara)); /* { dg-final { gdb-test . "varb" "2" } } */
return 0;
}
int __attribute__((noinline))
fn2 (void)
{
int vara = (varb == 3); /* { dg-final { gdb-test .+1 "vara" "1" } } */
asm volatile ("" : : "g" (vara)); /* { dg-final { gdb-test . "varb" "3" } } */
return 0;
}
int __attribute__((noinline))
foo (unsigned long *p, unsigned long *q)
{
int ret;
asm volatile ("" : "=r" (ret), "=r" (*p), "=r" (*q) : "0" (1), "1" (2l), "2" (3l));
return ret;
}
int __attribute__((noinline))
fn3 (void)
{
unsigned long a = 0, b = 0, c = 0;
a = foo (&b, &c);
/* { dg-final { gdb-test .+6 "a" "1" } } */
/* { dg-final { gdb-test .+5 "b" "2" } } */
/* { dg-final { gdb-test .+4 "c" "3" } } */
unsigned long vara = a; /* { dg-final { gdb-test .+3 "vara" "1" } } */
unsigned long varb = b; /* { dg-final { gdb-test .+2 "varb" "2" } } */
unsigned long varc = c; /* { dg-final { gdb-test .+1 "varc" "3" } } */
asm volatile ("" : : "g" (vara), "g" (varb), "g" (varc));
return a;
}
int
main (void)
{
asm volatile ("" : "=r" (varb) : "0" (2));
fn1 ();
asm volatile ("" : "=r" (varb) : "0" (3));
fn2 ();
fn3 ();
return 0;
}
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