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[Bug rtl-optimization/22619] [3.4/4.0/4.1 regression] Compilation failure for real_const_1.f and real_const_2.f90
- From: "pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 28 Jul 2005 18:43:53 -0000
- Subject: [Bug rtl-optimization/22619] [3.4/4.0/4.1 regression] Compilation failure for real_const_1.f and real_const_2.f90
- References: <20050722202004.22619.tkoenig@gcc.gnu.org>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From pinskia at gcc dot gnu dot org 2005-07-28 18:43 -------
And here is a testcase which fails from 3.3 and upwards at -O2 (on the mainline you have to supply
-fno-tree-ccp -fno-tree-store-ccp as we optimize it at the tree level):
void f (void)
{
static const float rp[4] = {1.0e+0, 1.0e+0, 1.0e+0, 1.0e+0};
static const float rn[4] = {-1.0e+0, -1.0e+0, -1.0e+0, -1.0e+0};
if (__builtin_fabsf(rp[0] - 1.0e+0f) > 9.99999974737875163555145263671875e-6f) goto L16; else
goto L24;
L3:;
if (__builtin_fabsf(rn[0] + 1.0e+0f) > 9.99999974737875163555145263671875e-6f) goto L18; else
goto L33;
L10:;
return;
L16:;
__builtin_abort ();
L18:;
__builtin_abort ();
L24:;
if (__builtin_fabsf (rp[1] - 1.0e+0f) > 9.99999974737875163555145263671875e-6) goto L16; else
goto L27;
L27:;
if (__builtin_fabsf (rp[2] - 1.0e+0f) > 9.99999974737875163555145263671875e-6f) goto L16; else
goto L30;
L30:;
if (__builtin_fabsf (rp[3] - 1.0e+0f) > 9.99999974737875163555145263671875e-6f) goto L16; else
goto L3;
L33:;
if (__builtin_fabsf(rn[1] + 1.0e+0f) > 9.99999974737875163555145263671875e-6f) goto L18; else
goto L36;
L36:;
if (__builtin_fabsf(rn[2] + 1.0e+0f) > 9.99999974737875163555145263671875e-6f) goto L18; else
goto L39;
L39:;
if (__builtin_fabsf(rn[3] + 1.0e+0f) > 9.99999974737875163555145263671875e-6f) goto L18; else
goto L10;
}
--
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |3.3.3 3.4.0 4.0.0 4.1.0
Known to work| |3.2.3
Summary|[4.1 regression] Compilation|[3.4/4.0/4.1 regression]
|failure for real_const_1.f |Compilation failure for
|and real_const_2.f90 |real_const_1.f and
| |real_const_2.f90
Target Milestone|4.1.0 |4.0.2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22619