Launchpad has imported 11 comments from the remote bug at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34762.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://documentation.ubuntu.com/launchpad/user/reference/bugs/multi-project-bugs/about-multi-project-bugs/#bugs-in-external-trackers. ------------------------------------------------------------------------ On 2008-01-12T20:52:28+00:00 Randolph Chung wrote: While building RPM on hppa with gcc-4.2, build fails with the captioned error. Somewhat reduced testcase attached. Builds fine with -O1 or without -fPIC, or with older compilers. ffmpeg and squashfs also fail to build with a similar error (not always built with -fPIC) Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/0 ------------------------------------------------------------------------ On 2008-01-12T20:54:01+00:00 Randolph Chung wrote: Created attachment 14931 Testcase Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/1 ------------------------------------------------------------------------ On 2008-01-12T21:44:39+00:00 Rguenth wrote: Probably a dup of PR32889. Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/2 ------------------------------------------------------------------------ On 2008-01-13T01:46:11+00:00 John David Anglin wrote: Subject: Re: [4.2 regression] internal compiler error: in delete_output_reload, at reload1.c:7958 > Probably a dup of PR32889. Agreed but the current 4.2 branch still ICEs. The failure doesn't occur with 4.3. I'm having difficulty understanding why this was classified as target bug. It appears to me to be a middle-end (reload) bug. Before the ICE, we handle a very similar reload: Starting program: /home/dave/gcc-4.2/objdir/stage1-gcc/cc1 -fpreprocessed pr34762.i -dumpbase pr34762.i -auxbase pr34762 -O2 -version -o pr34762.s -fPIC GNU C version 4.2.3 20080106 (prerelease) (hppa-linux) compiled by GNU C version 4.1.0. GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 options passed: -fpreprocessed -auxbase -O2 -fPIC options enabled: -fPIC -falign-loops -fargument-alias -fbranch-count-reg -fcaller-saves -fcommon -fcprop-registers -fcrossjumping -fcse-follow-jumps -fcse-skip-blocks -fdefer-pop -fdelayed-branch -fdelete-null-pointer-checks -fearly-inlining -feliminate-unused-debug-types -fexpensive-optimizations -ffunction-cse -fgcse -fgcse-lm -fguess-branch-probability -fident -fif-conversion -fif-conversion2 -finline-functions-called-once -fipa-pure-const -fipa-reference -fipa-type-escape -fivopts -fkeep-static-consts -fleading-underscore -fmath-errno -fmerge-constants -fmove-loop-invariants -fomit-frame-pointer -foptimize-register-move -foptimize-sibling-calls -fpeephole -fpeephole2 -freg-struct-return -fregmove -freorder-blocks -freorder-functions -frerun-cse-after-loop -fsched-interblock -fsched-spec -fsched-stalled-insns-dep -fschedule-insns -fschedule-insns2 -fshow-column -fsplit-ivs-in-unroller -fstrict-aliasing -fstrict-overflow -fthread-jumps -ftoplevel-reorder -ftrapping-math -ftree-ccp -ftree-ch -ftree-copy-prop -ftree-copyrename -ftree-dce -ftree-dominator-opts -ftree-dse -ftree-fre -ftree-loop-im -ftree-loop-ivcanon -ftree-loop-optimize -ftree-lrs -ftree-pre -ftree-salias -ftree-sink -ftree-sra -ftree-store-ccp -ftree-store-copy-prop -ftree-ter -ftree-vect-loop-version -ftree-vrp -funit-at-a-time -fvar-tracking -fzero-initialized-in-bss -mbig-switch -mgas -mglibc -mno-space-regs Compiler executable checksum: 7052689d04078c8c580b43f74ef2f4ae gnu_dev_major gnu_dev_minor gnu_dev_makedev stat lstat fstat fstatat mknod mknodat stat64 lstat64 fstat64 fstatat64 vprintf getchar fgetc_unlocked getc_unlocked getchar_unlocked putchar fputc_unlocked putc_unlocked putchar_unlocked getline feof_unlocked ferror_unlocked __strcspn_c1 __strcspn_c2 __strcspn_c3 __strspn_c1 __strspn_c2 __strspn_c3 __strpbrk_c2 __strpbrk_c3 __strtok_r_1c __strsep_1c __strsep_2c __strsep_3c strtod strtol strtoul strtof strtold strtoq strtouq strtoll strtoull atof atoi atol atoll tolower toupper __sigismember __sigaddset __sigdelset __cmsg_nxthdr xislower xisupper xisalpha xisdigit xisalnum xisblank xisspace xtolower xtoupper headerFreeData h2hv headerNew headerFree headerLink headerUnlink headerSort headerUnsort headerSizeof headerUnload headerReload headerCopy headerLoad headerCopyLoad headerRead headerWrite headerIsEntry headerFreeTag headerGetEntry headerGetEntryMinMemory headerAddEntry headerAppendEntry headerAddOrAppendEntry headerAddI18NStrin! g headerModifyEntry headerRemoveEntry headerSprintf headerCopyTags headerFreeIterator headerInitIterator headerNextIterator _free tag2sln runLuaScript runScript runInstScript start Analyzing compilation unitPerforming interprocedural optimizations Assembling functions: tag2sln headerFreeData runInstScript Breakpoint 1, emit_move_sequence (operands=0xfb6c74cc, mode=SImode, scratch_reg=0x0) at ../../gcc/gcc/config/pa/pa.c:1332 1332 register rtx operand0 = operands[0]; (gdb) p debug_rtx (operands[0]) (reg:SI 21 %r21) $18 = void (gdb) p debug_rtx (operands[1]) (const_int 8252 [0x203c]) $19 = void (gdb) bt #0 emit_move_sequence (operands=0xfb6c74cc, mode=SImode, scratch_reg=0x0) at ../../gcc/gcc/config/pa/pa.c:1332 #1 0x0052d0e4 in gen_movsi (operand0=0x403bed70, operand1=0x403b67a0) at ../../gcc/gcc/config/pa/pa.md:2430 #2 0x003f1354 in emit_move_insn_1 (x=0x403bed70, y=0x403b67a0) at ../../gcc/gcc/expr.c:3225 #3 0x0057a2d4 in gen_move_insn (x=0x403bed70, y=0x403b67a0) at ../../gcc/gcc/optabs.c:4399 #4 0x006096d8 in gen_reload (out=0x403bed70, in=0x403b67a0, opnum=0, type=RELOAD_FOR_OUTPUT_ADDRESS) at ../../gcc/gcc/reload1.c:7839 #5 0x0060934c in gen_reload (out=0x403bed70, in=0x403bed40, opnum=0, type=RELOAD_FOR_OUTPUT_ADDRESS) at ../../gcc/gcc/reload1.c:7746 #6 0x006055ac in emit_input_reload_insns (chain=0xadfdf8, rl=0xa3b00c, old=0x403bed40, j=0) at ../../gcc/gcc/reload1.c:6798 #7 0x006064d8 in do_input_reload (chain=0xadfdf8, rl=0xa3b00c, j=0) at ../../gcc/gcc/reload1.c:7055 #8 0x00606fdc in emit_reload_insns (chain=0xadfdf8) at ../../gcc/gcc/reload1.c:7228 ... (gdb) c Continuing Breakpoint 2, delete_output_reload (insn=0x403a6f28, j=1, last_reload_reg=5) at ../../gcc/gcc/reload1.c:7932 7932 gcc_assert (!rtx_equal_p (XEXP (i1, 0), substed)); (gdb) p debug_rtx (insn) (insn 314 313 315 25 (set (mem/c:SI (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040])) [89 freePrefixes+0 S4 A32]) (const_int 0 [0x0])) 37 {*pa.md:2484} (nil) (nil)) $22 = void (gdb) p debug_rtx (substed) (mem/c:SI (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040])) [89 freePrefixes+0 S4 A32]) $23 = void (gdb) p debug_rtx (i1) (expr_list:REG_EQUIV (mem/c:SI (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040])) [89 freePrefixes+0 S4 A32]) (nil)) $24 = void The backend doesn't generate REG_EQUIV notes. From pr34762.i.138r.greg, the first reload is Reloads for insn # 307 Reload 0: reload_in (SI) = (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040])) GENERAL_REGS, RELOAD_FOR_OPERAND_ADDRESS (opnum = 0), can't combine reload_in_reg: (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040])) reload_reg_rtx: (reg:SI 20 %r20) Reload 1: reload_out (SI) = (mem/c:SI (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040] )) [89 freePrefixes+0 S4 A32]) NO_REGS, RELOAD_FOR_OUTPUT (opnum = 0), optional reload_out_reg: (reg/v:SI 208 [ freePrefixes ]) Then, we fail with with this one Reloads for insn # 314 Reload 0: reload_in (SI) = (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040])) GENERAL_REGS, RELOAD_FOR_OPERAND_ADDRESS (opnum = 0), can't combine reload_in_reg: (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040])) reload_reg_rtx: (reg:SI 21 %r21) Reload 1: reload_out (SI) = (mem/c:SI (plus:SI (reg/f:SI 3 %r3) (const_int 8256 [0x2040] )) [89 freePrefixes+0 S4 A32]) NO_REGS, RELOAD_FOR_OUTPUT (opnum = 0), optional reload_out_reg: (reg/v:SI 208 [ freePrefixes ]) Dave Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/4 ------------------------------------------------------------------------ On 2008-01-13T01:52:09+00:00 John David Anglin wrote: Subject: Re: [4.2 regression] internal compiler error: in delete_output_reload, at reload1.c:7958 These are insns 307 and 314 from the greg pass. > Reloads for insn # 307 (insn 307 280 281 24 (set (reg/v:SI 208 [ freePrefixes ]) (reg:SI 264)) 37 {*pa.md:2484} (nil) (nil)) > Reloads for insn # 314 (insn 314 313 315 25 (set (reg/v:SI 208 [ freePrefixes ]) (const_int 0 [0x0])) 37 {*pa.md:2484} (nil) (nil)) Dave Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/5 ------------------------------------------------------------------------ On 2008-01-13T02:21:50+00:00 Danglin wrote: Appears to me to be a reload bug. Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/7 ------------------------------------------------------------------------ On 2008-01-13T02:52:09+00:00 John David Anglin wrote: Subject: Re: [4.2 regression] internal compiler error: in delete_output_reload, at reload1.c:7958 > Appears to me to be a reload bug. This is totally untested but I believe the attached patch will fix this bug. Dave Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/8 ------------------------------------------------------------------------ On 2008-01-13T02:52:09+00:00 John David Anglin wrote: Created attachment 14934 reload.c.d Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/9 ------------------------------------------------------------------------ On 2008-01-13T16:53:46+00:00 Danglin wrote: Subject: Bug 34762 Author: danglin Date: Sun Jan 13 16:53:02 2008 New Revision: 131508 URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=131508 Log: PR middle-end/34762 * reload.c (find_reloads_toplev): Use rtx_equal_p to compare x and mem. Modified: branches/gcc-4_2-branch/gcc/ChangeLog branches/gcc-4_2-branch/gcc/reload.c Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/10 ------------------------------------------------------------------------ On 2008-01-13T16:55:20+00:00 Danglin wrote: Fixed by patch. Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/11 ------------------------------------------------------------------------ On 2008-02-23T21:24:25+00:00 Mike Eager wrote: Created attachment 15216 More complete fix for reload.c This is a more complete patch to reload.c. Duplicate of fix for bug 32889. Reply at: https://bugs.launchpad.net/ubuntu/+source/gcc-4.2/+bug/182412/comments/13 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/182412 Title: ICE on hppa To manage notifications about this bug go to: https://bugs.launchpad.net/gcc/+bug/182412/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
