* [Bug middle-end/55718] [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866
2012-12-17 9:45 [Bug middle-end/55718] New: [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866 rguenth at gcc dot gnu.org
@ 2012-12-17 9:46 ` rguenth at gcc dot gnu.org
2012-12-17 10:31 ` [Bug target/55718] " rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2012-12-17 9:46 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55718
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |4.8.0
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug target/55718] [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866
2012-12-17 9:45 [Bug middle-end/55718] New: [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866 rguenth at gcc dot gnu.org
2012-12-17 9:46 ` [Bug middle-end/55718] " rguenth at gcc dot gnu.org
@ 2012-12-17 10:31 ` rguenth at gcc dot gnu.org
2012-12-17 10:40 ` rguenth at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-17 10:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55718
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ra
Component|middle-end |target
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-17 10:31:03 UTC ---
Looks like a target issue:
> ./cc1 -quiet -O2 ansi.i -I include -fPIC -march=z10
../tack/ansi.c: In function 'terminal_state':
../tack/ansi.c:566:1: internal compiler error: in gen_reg_rtx, at
emit-rtl.c:866
0x77a668 gen_reg_rtx(machine_mode)
/space/rguenther/src/svn/trunk/gcc/emit-rtl.c:866
0x9aaa63 maybe_legitimize_operand
/space/rguenther/src/svn/trunk/gcc/optabs.c:8057
0x9aadc9 maybe_legitimize_operands(insn_code, unsigned int, unsigned int,
expand_operand*)
/space/rguenther/src/svn/trunk/gcc/optabs.c:8130
0x9aae5d maybe_gen_insn(insn_code, unsigned int, expand_operand*)
/space/rguenther/src/svn/trunk/gcc/optabs.c:8148
0x99a58f expand_binop_directly
/space/rguenther/src/svn/trunk/gcc/optabs.c:1452
0x99a7f6 expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
/space/rguenther/src/svn/trunk/gcc/optabs.c:1521
0x999f65 expand_simple_binop(machine_mode, rtx_code, rtx_def*, rtx_def*,
rtx_def*, int, optab_methods)
/space/rguenther/src/svn/trunk/gcc/optabs.c:1269
0x7b8478 force_operand(rtx_def*, rtx_def*)
/space/rguenther/src/svn/trunk/gcc/expr.c:7042
0xd4471f legitimize_pic_address(rtx_def*, rtx_def*)
/space/rguenther/src/svn/trunk/gcc/config/s390/s390.c:3669
0xd458f8 emit_symbolic_move(rtx_def**)
/space/rguenther/src/svn/trunk/gcc/config/s390/s390.c:3925
0xd855ce gen_movdi(rtx_def*, rtx_def*)
/space/rguenther/src/svn/trunk/gcc/config/s390/s390.md:1339
0x7abfaf emit_move_insn_1(rtx_def*, rtx_def*)
/space/rguenther/src/svn/trunk/gcc/expr.c:3417
0x9a2e06 gen_move_insn(rtx_def*, rtx_def*)
/space/rguenther/src/svn/trunk/gcc/optabs.c:4785
0xa28c8a gen_reload
/space/rguenther/src/svn/trunk/gcc/reload1.c:8707
0xa254b5 emit_input_reload_insns
/space/rguenther/src/svn/trunk/gcc/reload1.c:7593
reducing.
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug target/55718] [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866
2012-12-17 9:45 [Bug middle-end/55718] New: [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866 rguenth at gcc dot gnu.org
2012-12-17 9:46 ` [Bug middle-end/55718] " rguenth at gcc dot gnu.org
2012-12-17 10:31 ` [Bug target/55718] " rguenth at gcc dot gnu.org
@ 2012-12-17 10:40 ` rguenth at gcc dot gnu.org
2012-12-18 11:30 ` krebbel at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-17 10:40 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55718
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-17 10:40:30 UTC ---
Reduced testcase:
extern char temp[];
short ansi_value[256];
void terminal_state(void)
{
static const char *puc[] = { "", "<", "=", ">", "?", 0};
int i, j, k, l, modes_found;
char buf[256];
k = (int) __builtin_strlen(temp);
for (j = l = 0; j < 255 && j - l < 50; j++)
{
__builtin_sprintf(temp, "\033[%s%d$p", puc[i], j);
if (ansi_value[1])
{
l = j;
buf[k] = '\0';
put_crlf();
ptextln(buf);
buf[k++] = ' ';
k = (int) __builtin_strlen(temp);
}
}
for (i = j = 0; j < modes_found; j = ++i >> 1)
;
}
(gdb) bt
#0 fancy_abort (
file=0x1170a20 "/space/rguenther/src/svn/trunk/gcc/emit-rtl.c", line=866,
function=0x1171ab9 <gen_reg_rtx(machine_mode)::__FUNCTION__> "gen_reg_rtx")
at /space/rguenther/src/svn/trunk/gcc/diagnostic.c:1146
#1 0x000000000077a669 in gen_reg_rtx (mode=DImode)
at /space/rguenther/src/svn/trunk/gcc/emit-rtl.c:866
#2 0x00000000009aaa64 in maybe_legitimize_operand (icode=CODE_FOR_adddi3,
opno=0, op=0x7fffffffd040)
at /space/rguenther/src/svn/trunk/gcc/optabs.c:8057
#3 0x00000000009aadca in maybe_legitimize_operands (icode=CODE_FOR_adddi3,
opno=0, nops=3, ops=0x7fffffffd040)
at /space/rguenther/src/svn/trunk/gcc/optabs.c:8130
#4 0x00000000009aae5e in maybe_gen_insn (icode=CODE_FOR_adddi3, nops=3,
ops=0x7fffffffd040) at /space/rguenther/src/svn/trunk/gcc/optabs.c:8148
#5 0x000000000099a590 in expand_binop_directly (mode=DImode,
binoptab=add_optab, op0=0x7ffff6e1f5a0, op1=0x7ffff6d074b0, target=0x0,
unsignedp=1, methods=OPTAB_LIB_WIDEN, last=0x0)
at /space/rguenther/src/svn/trunk/gcc/optabs.c:1452
#6 0x000000000099a7f7 in expand_binop (mode=DImode, binoptab=add_optab,
op0=0x7ffff6e1f5a0, op1=0x7ffff6d074b0, target=0x0, unsignedp=1,
methods=OPTAB_LIB_WIDEN)
at /space/rguenther/src/svn/trunk/gcc/optabs.c:1521
#7 0x0000000000999f66 in expand_simple_binop (mode=DImode, code=PLUS,
op0=0x7ffff6e1f5a0, op1=0x7ffff6d074b0, target=0x0, unsignedp=1,
methods=OPTAB_LIB_WIDEN)
at /space/rguenther/src/svn/trunk/gcc/optabs.c:1269
#8 0x00000000007b8479 in force_operand (value=0x7ffff6e1f600, target=0x0)
at /space/rguenther/src/svn/trunk/gcc/expr.c:7042
#9 0x0000000000d44720 in legitimize_pic_address (orig=0x7ffff6e19a70,
reg=0x7ffff6e20220)
at /space/rguenther/src/svn/trunk/gcc/config/s390/s390.c:3669
#10 0x0000000000d458f9 in emit_symbolic_move (operands=0x7fffffffd4f0)
at /space/rguenther/src/svn/trunk/gcc/config/s390/s390.c:3925
#11 0x0000000000d855cf in gen_movdi (operand0=0x7ffff6e20220,
operand1=0x7ffff6e19a70)
at /space/rguenther/src/svn/trunk/gcc/config/s390/s390.md:1339
#12 0x00000000007abfb0 in emit_move_insn_1 (x=0x7ffff6e20220, y=0x7ffff6e19a70)
at /space/rguenther/src/svn/trunk/gcc/expr.c:3417
#13 0x00000000009a2e07 in gen_move_insn (x=0x7ffff6e20220, y=0x7ffff6e19a70)
at /space/rguenther/src/svn/trunk/gcc/optabs.c:4785
#14 0x0000000000a28c8b in gen_reload (out=0x7ffff6e20220, in=0x7ffff6e19a70,
opnum=2, type=RELOAD_FOR_OPERAND_ADDRESS)
at /space/rguenther/src/svn/trunk/gcc/reload1.c:8707
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug target/55718] [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866
2012-12-17 9:45 [Bug middle-end/55718] New: [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866 rguenth at gcc dot gnu.org
` (2 preceding siblings ...)
2012-12-17 10:40 ` rguenth at gcc dot gnu.org
@ 2012-12-18 11:30 ` krebbel at gcc dot gnu.org
2013-01-07 15:36 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: krebbel at gcc dot gnu.org @ 2012-12-18 11:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55718
Andreas Krebbel <krebbel at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2012-12-18
AssignedTo|unassigned at gcc dot |krebbel at gcc dot gnu.org
|gnu.org |
Ever Confirmed|0 |1
--- Comment #3 from Andreas Krebbel <krebbel at gcc dot gnu.org> 2012-12-18 11:30:06 UTC ---
Created attachment 28993
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=28993
Experimental fix
Starting with http://gcc.gnu.org/ml/gcc-patches/2012-09/msg00088.html UNSPEC
GOTENTs are accepted as legitimate address what leads to this error.
For the strlen implementation we subtract the result from the source pointer.
In the testcase the subtraction is done in a mode smaller than pointer size
(SImode). The source pointer is the address of a global symbol in the GOT.
Resolving the subreg on the address reload generates:
(const:DI (plus:DI (unspec:DI [
(symbol_ref:DI ("temp") [flags 0x440] <var_decl
0x200060095f0 temp>)
] UNSPEC_GOTENT)
(const_int 4 [0x4])))
Instead of just letting it pass legitmize_pic_address tries to generate code
for the add what needs an additional register. The attached patch fixes this.
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug target/55718] [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866
2012-12-17 9:45 [Bug middle-end/55718] New: [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866 rguenth at gcc dot gnu.org
` (3 preceding siblings ...)
2012-12-18 11:30 ` krebbel at gcc dot gnu.org
@ 2013-01-07 15:36 ` rguenth at gcc dot gnu.org
2013-01-10 8:16 ` krebbel at gcc dot gnu.org
2013-01-10 8:22 ` krebbel at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2013-01-07 15:36 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55718
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug target/55718] [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866
2012-12-17 9:45 [Bug middle-end/55718] New: [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866 rguenth at gcc dot gnu.org
` (4 preceding siblings ...)
2013-01-07 15:36 ` rguenth at gcc dot gnu.org
@ 2013-01-10 8:16 ` krebbel at gcc dot gnu.org
2013-01-10 8:22 ` krebbel at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: krebbel at gcc dot gnu.org @ 2013-01-10 8:16 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55718
--- Comment #4 from Andreas Krebbel <krebbel at gcc dot gnu.org> 2013-01-10 08:15:23 UTC ---
Author: krebbel
Date: Thu Jan 10 08:15:07 2013
New Revision: 195078
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195078
Log:
2013-01-10 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
PR target/55718
* config/s390/s390.c (s390_symref_operand_p)
(s390_loadrelative_operand_p): Merge the two functions.
(s390_check_qrst_address, print_operand_address): Add parameters
to s390_loadrelative_operand_p invokation.
(s390_check_symref_alignment): Use s390_loadrelative_operand_p.
(s390_reload_larl_operand, s390_secondary_reload): Use
s390_loadrelative_operand_p instead of s390_symref_operand_p.
(legitimize_pic_address): Handle @GOTENT and @PLT + addend.
Added:
trunk/gcc/testsuite/gcc.target/s390/pr55718.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/s390/s390.c
^ permalink raw reply [flat|nested] 8+ messages in thread* [Bug target/55718] [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866
2012-12-17 9:45 [Bug middle-end/55718] New: [4.8 Regression] ICE in gen_reg_rtx, at emit-rtl.c:866 rguenth at gcc dot gnu.org
` (5 preceding siblings ...)
2013-01-10 8:16 ` krebbel at gcc dot gnu.org
@ 2013-01-10 8:22 ` krebbel at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: krebbel at gcc dot gnu.org @ 2013-01-10 8:22 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55718
Andreas Krebbel <krebbel at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #5 from Andreas Krebbel <krebbel at gcc dot gnu.org> 2013-01-10 08:21:30 UTC ---
Fixed per commit above.
^ permalink raw reply [flat|nested] 8+ messages in thread