http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59243
Bug ID: 59243
Summary: [SH] Build fails during compiling libjava/interpret.cc
with segfault
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: build
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: kkojima at gcc dot gnu.org
CC: olegendo at gcc dot gnu.org
Target: sh*-*-*
Created attachment 31270
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31270&action=edit
A reduced test case
Build fails for sh4-unknown-linux-gnu during compiling libjava/interpret.cc
with segfault. It looks sh_optimize_sett_clrt::find_last_ccreg_values
falls into infinite recursion. Here is a gdb backtrace for the attached
reduced testcase with -O1:
Program received signal SIGSEGV, Segmentation fault.
reg_overlap_mentioned_p (x=0xb7c8bd50, in=0xb7d74270)
at ../../ORIG/trunk/gcc/rtlanal.c:1427
1427 return refers_to_regno_p (regno, endregno, in, (rtx*) 0);
Missing separate debuginfos, use: debuginfo-install glibc-2.14.1-6.i686
(gdb) bt
#0 reg_overlap_mentioned_p (x=0xb7c8bd50, in=0xb7d74270)
at ../../ORIG/trunk/gcc/rtlanal.c:1427
#1 0x087a6d6d in set_of_1 (x=0xb7d74270, pat=0xb7bf242c, data1=0xbc000058)
at ../../ORIG/trunk/gcc/rtlanal.c:1001
#2 0x087a389e in set_of (pat=0xb7c8bd50, insn=0xb7f63460)
at ../../ORIG/trunk/gcc/rtlanal.c:1013
#3 0x087a3e04 in reg_set_p (reg=0xb7c8bd50, insn=0xb7f63460)
at ../../ORIG/trunk/gcc/rtlanal.c:871
#4 0x08aca612 in sh_optimize_sett_clrt::find_last_ccreg_values (
this=0x90b0718, start_insn=0xb7f63460, bb=0xb7f5aa40, values_out=...,
prev_visited_bb=0xb7f5aa80)
at ../../ORIG/trunk/gcc/config/sh/sh_optimize_sett_clrt.cc:323
#5 0x08aca91b in sh_optimize_sett_clrt::find_last_ccreg_values (
this=0x90b0718, start_insn=0xb7add140, bb=0xb7f5aa80, values_out=...,
prev_visited_bb=0xb7b33f40)
at ../../ORIG/trunk/gcc/config/sh/sh_optimize_sett_clrt.cc:383
#6 0x08aca91b in sh_optimize_sett_clrt::find_last_ccreg_values (
this=0x90b0718, start_insn=0xb7b36050, bb=0xb7b33f40, values_out=...,
prev_visited_bb=0xb7e2cf00)
at ../../ORIG/trunk/gcc/config/sh/sh_optimize_sett_clrt.cc:383
#7 0x08aca91b in sh_optimize_sett_clrt::find_last_ccreg_values (
this=0x90b0718, start_insn=0xb7bc1f9c, bb=0xb7e2cf00, values_out=...,
prev_visited_bb=0xb7b33f40)
at ../../ORIG/trunk/gcc/config/sh/sh_optimize_sett_clrt.cc:383
#8 0x08aca91b in sh_optimize_sett_clrt::find_last_ccreg_values (
this=0x90b0718, start_insn=0xb7b36050, bb=0xb7b33f40, values_out=...,
prev_visited_bb=0xb7e2cf00)
at ../../ORIG/trunk/gcc/config/sh/sh_optimize_sett_clrt.cc:383
#9 0x08aca91b in sh_optimize_sett_clrt::find_last_ccreg_values (
this=0x90b0718, start_insn=0xb7bc1f9c, bb=0xb7e2cf00, values_out=...,
prev_visited_bb=0xb7b33f40)
at ../../ORIG/trunk/gcc/config/sh/sh_optimize_sett_clrt.cc:383
#10 0x08aca91b in sh_optimize_sett_clrt::find_last_ccreg_values (
this=0x90b0718, start_insn=0xb7b36050, bb=0xb7b33f40, values_out=...,
prev_visited_bb=0xb7e2cf00)
at ../../ORIG/trunk/gcc/config/sh/sh_optimize_sett_clrt.cc:383
frame 6, 8 and 10 are equivalent.
