https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80216
Bug ID: 80216
Summary: [7 Regression] Memory hog w/ -O1
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Keywords: memory-hog
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: asolokha at gmx dot com
Target Milestone: ---
At least gcc-7.0.0-alpha20170319 and gcc-7.0.0-alpha20170326 snapshots allocate
all available memory when compiling the following snippet w/ -O1:
int u4, lx, e0, zy, pz;
void
tb (int m6)
{
for (pz = 0; pz < 1; ++pz)
{
for (zy = 0; zy < 1; ++zy)
for (u4 = 0; u4 < 1; ++u4)
for (e0 = 0; e0 < 1; ++e0)
{
as:
for (;;)
{
}
}
if (e0 != 0)
goto ql;
if (0)
{
o3:
for (lx = 0; lx < 1; ++lx)
{
m6 |= lx;
if (m6 == 0)
lx = 0;
ql:
;
}
goto as;
}
}
goto o3;
}
% timeout 20 gcc-7.0.0-alpha20170326 -O1 -c bxvehker.c
zsh: exit 124 timeout 20 gcc-7.0.0-alpha20170326 -O1 -c bxvehker.c
