[Bug target/20018] New: [4.0 regression] unable to find a register to spill in class âÂÂPR_REGSâÂÂ
schwab at suse dot de
gcc-bugzilla@gcc.gnu.org
Thu Feb 17 12:45:00 GMT 2005
This is another fallout from the simplify-rtx.c change, where the fix for the fix causes another regression:
* simplify-rtx.c (simplify_relational_operation_1): Avoid creating
zero extensions of BImode operands. Call lowpart_subreg instead
of gen_lowpart_common and gen_lowpart_SUBREG.
$ gcc/xgcc -Wall -B gcc/ -O2 -S ex_getln.i
ex_getln.i: In function âÂÂgetcmdlineâÂÂ:
ex_getln.i:4475: error: unable to find a register to spill in class âÂÂPR_REGSâÂÂ
ex_getln.i:4475: error: this is the insn:
(insn 5728 5721 5730 633 (set (reg:BI 262 p6 [2906])
(ior:BI (reg:BI 262 p6 [2900])
(subreg:BI (reg:SI 132 f4 [3004]) 0))) 63 {iorbi3} (insn_list:REG_DEP_TRUE 5721 (nil))
(expr_list:REG_DEAD (reg:BI 262 p6 [2900])
(nil)))
ex_getln.i:4475: internal compiler error: in spill_failure, at reload1.c:1872
--
Summary: [4.0 regression] unable to find a register to spill in
class âÂÂPR_REGSâÂÂ
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Keywords: ice-on-valid-code
Severity: critical
Priority: P2
Component: target
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: schwab at suse dot de
CC: gcc-bugs at gcc dot gnu dot org,roger at eyesopen dot
com
GCC target triplet: ia64-suse-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20018
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