The test-case to be attached "works" with 4.0.2.
For revision 106478 of "Fri Nov 4 03:11:30 UTC 2005", I get
/tmp/st18.c: In function âfâ:
/tmp/st18.c:73: error: insn does not satisfy its constraints:
(insn:QI 84 518 85 9 (set (cc0)
(mem:QI (plus:SI (sign_extend:SI (reg:HI 10 r10))
(reg:SI 1 r1)) [0 S1 A8])) 3 {tstqi} (nil)
(nil))
/tmp/st18.c:73: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:393
It looks like reload trips over its confusion from reloading this insn:
(insn:QI 84 83 85 9 (set (cc0)
(mem:QI (plus:SI (sign_extend:SI (mem:HI (post_inc:SI (reg/f:SI 12 r12
[orig:58 ivtmp.158 ] [58])) [2 S2 A8]))
(reg/v/f:SI 16 srp [orig:68 c0 ] [68])) [0 S1 A8])) 3 {tstqi}
(nil)
(expr_list:REG_INC (reg/f:SI 12 r12 [orig:58 ivtmp.158 ] [58])
(nil)))
where (reg:SI 16), "srp" is not valid in an address.
--
Summary: [4.1 regression] global-alloc (reload) trips over own
confusion for unexpected addressing modes
Product: gcc
Version: 4.1.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: hp at gcc dot gnu dot org
ReportedBy: hp at gcc dot gnu dot org
GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: cris-axis-elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24750
