[Bug tree-optimization/17217] not removing removal of nested structs
pinskia at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Mar 4 13:46:00 GMT 2019
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=17217
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |UNCONFIRMED
Ever confirmed|1 |0
--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Steven Bosscher from comment #6)
> What code is expected in this really old bug? Trunk x86-64 today:
> __attribute__((noinline))
g1 is not to be noinline for the nested testcase.
The un-nested testcase is actually should not be optimized.
The nested function testcase shows the issue.
For the original testcase:
int h(int *a);
int f(int i, int j)
{
int t = i;
int t1 = j;
int g()
{
return h(&t) + t1;
}
return g() + t1;
}
We should optimize this to the same as:
int h(int *a);
int f(int i, int j)
{
return h(&t) + 2 * j;
}
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