https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63285
Bug ID: 63285
Summary: [4.9/5 Regression] -fcompare-debug scheduler related
failure
Product: gcc
Version: 4.9.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
Assignee: unassigned at gcc dot gnu.org
Reporter: jakub at gcc dot gnu.org
CC: vmakarov at gcc dot gnu.org
The following testcase:
/* { dg-do compile } */
/* { dg-options "-O2 -fcompare-debug" } */
struct S { int a; };
struct T { int b, c; } a;
long b;
int c, d;
void bar (int, int);
void baz (void *, int);
void
foo (struct S *x, int y, int z, void *f, int *p, struct T *e)
{
while (x)
{
baz (f, &d > p);
if (z & 1)
bar (f > (void *) &f, z);
}
if (c)
{
asm ("" : "+m" (a) : "i" (0));
y--;
}
if (e->b == e->c)
c = y;
y--;
}
fails with -fcompare-debug on the trunk and 4.9 branch since the PR61923 fix
(i.e. r213675 on the trunk and r213674 on the 4.9 branch), one insn has :TI in
just one of the dumps and not the other one.
