Attached testcase when compiled by gcc version 4.2.0 20051217 (experimental) on
x86 using:
-----------------
gcc -O2 -fmove-loop-invariants -c -o mpegaudiodec.o mpegaudiodec.c
-----------------
results in the following
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mpegaudiodec.c: In function ‘decode_init’:
mpegaudiodec.c:510: error: unrecognizable insn:
(insn:HI 1144 718 1309 70 (set (reg:SI 507)
(fix:SI (reg:DF 506))) -1 (insn_list:REG_DEP_TRUE 718 (nil))
(expr_list:REG_DEAD (reg:DF 506)
(nil)))
mpegaudiodec.c:510: internal compiler error: in extract_insn, at recog.c:2084
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
-----------------
Works on x86_64.
--
Summary: ICE on valid code with -O2 -fmove-loop-invariants
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: drab at kepler dot fjfi dot cvut dot cz
GCC target triplet: i?86-pc-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25483
