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optimization/7134: Athlon: ICE in extract_insn, at recog.c:2130
- From: reichelt at igpm dot rwth-aachen dot de
- To: gcc-gnats at gcc dot gnu dot org
- Cc: spigel at olvs dot miee dot ru
- Date: 26 Jun 2002 15:26:53 -0000
- Subject: optimization/7134: Athlon: ICE in extract_insn, at recog.c:2130
- Reply-to: reichelt at igpm dot rwth-aachen dot de
>Number: 7134
>Category: optimization
>Synopsis: Athlon: ICE in extract_insn, at recog.c:2130
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Wed Jun 26 08:36:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: Volker Reichelt
>Release: gcc 3.2 20020617
>Organization:
>Environment:
i686-pc-linux-gnu
>Description:
The following code causes an ICE when compiled with
"gcc -march=athlon -O -c":
--------------------------snip here----------------------
void foo ()
{
int i, n;
for ( i=0; i<n; ++i )
i=n^128;
}
--------------------------snip here----------------------
The error message is:
bug.c: In function `foo':
bug.c:7: error: unrecognizable insn:
(insn 53 57 54 1 (nil) (parallel [
(set (strict_low_part (reg:QI 0 al [58]))
(xor:QI (reg:QI 0 al [58])
(const_int -128 [0xffffff80])))
(clobber (reg:CC 17 flags))
]) -1 (insn_list 57 (nil))
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
bug.c:7: internal compiler error: Internal compiler error in extract_insn, at recog.c:2130
Please submit a full bug report, [etc.]
The example compiles fine with gcc 3.1.
The example was created from a file (psout.i) from a
bug report of Sergei Pachkov (see PR 7063).
>How-To-Repeat:
gcc -march=athlon -O -c bug.c
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted: