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[Bug rtl-optimization/56571] New: ICE in copyprop_hardreg_forward_1, at regcprop.c (insn does not satisfy its constraints !)
- From: "antoine.balestrat at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 08 Mar 2013 10:42:42 +0000
- Subject: [Bug rtl-optimization/56571] New: ICE in copyprop_hardreg_forward_1, at regcprop.c (insn does not satisfy its constraints !)
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56571
Bug #: 56571
Summary: ICE in copyprop_hardreg_forward_1, at regcprop.c (insn
does not satisfy its constraints !)
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: antoine.balestrat@gmail.com
Hello !
The following testcase makes GCC 4.7.2 and 4.8.0 as of 20130308 fail.
$ cat insn.c
int a, b;
int f(void)
{
(a % b) && f();
a = (0 || a | (a ? : 1));
}
$ xgcc -w -O2 -funroll-loops -ftracer insn.c
insn.c: In function âfâ:
insn.c:7:1: error: insn does not satisfy its constraints:
}
^
(insn 83 79 84 9 (parallel [
(set (reg:CCZ 17 flags)
(compare:CCZ (ior:SI (reg:SI 4 si [81])
(reg:SI 2 cx [orig:69 D.1741 ] [69]))
(const_int 0 [0])))
(clobber (reg:SI 39 r10 [81]))
]) insn.c:6 451 {*iorsi_3}
(expr_list:REG_DEAD (reg:SI 2 cx [orig:69 D.1741 ] [69])
(expr_list:REG_DEAD (reg:SI 0 ax [81])
(expr_list:REG_UNUSED (reg:SI 0 ax [81])
(nil)))))
insn.c:7:1: internal compiler error: in copyprop_hardreg_forward_1, at
regcprop.c:774
0x8a175a _fatal_insn(char const*, rtx_def const*, char const*, int, char
const*)
../../srcdir/gcc/rtl-error.c:109
0x8a177f _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
../../srcdir/gcc/rtl-error.c:120
0x87b1e7 copyprop_hardreg_forward_1
../../srcdir/gcc/regcprop.c:774
0x87b1e7 copyprop_hardreg_forward
../../srcdir/gcc/regcprop.c:1085
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