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* [Bug middle-end/65163] New: [5 Regression][SH] ICE in decompose at rtl.h:2007
@ 2015-02-22 13:17 olegendo at gcc dot gnu.org
2015-02-22 13:48 ` [Bug target/65163] " olegendo at gcc dot gnu.org
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: olegendo at gcc dot gnu.org @ 2015-02-22 13:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65163
Bug ID: 65163
Summary: [5 Regression][SH] ICE in decompose at rtl.h:2007
Product: gcc
Version: 5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: olegendo at gcc dot gnu.org
Target: sh*-*-*
The following example:
typedef unsigned int uint32_t;
union unaligned_32 { uint32_t l; } __attribute__((packed));
int
test (unsigned char* buf, int bits_per_component)
{
(((union unaligned_32 *)(buf))->l) = __builtin_bswap32 (bits_per_component ==
10 ? 1 : 0);
return 0;
}
compiled with -m4 -ml -O2 results in:
internal compiler error: in decompose, at rtl.h:2007
}
^
0x8708fa1 wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompose(long
long*, unsigned int, std::pair<rtx_def*, machine_mode> const&)
../../gcc-trunk/gcc/rtl.h:2005
0x8708fa1 wi::int_traits<std::pair<rtx_def*, machine_mode> >::decompose(long
long*, unsigned int, std::pair<rtx_def*, machine_mode> const&)
../../gcc-trunk/gcc/simplify-rtx.c:3717
0x8708fa1 wide_int_ref_storage<std::pair<rtx_def*, machine_mode> >
../../gcc-trunk/gcc/wide-int.h:948
0x8708fa1 generic_wide_int<std::pair<rtx_def*, machine_mode> >
../../gcc-trunk/gcc/wide-int.h:725
0x8708fa1 neg_p<std::pair<rtx_def*, machine_mode> >
../../gcc-trunk/gcc/wide-int.h:1694
0x8708fa1 simplify_const_binary_operation(rtx_code, machine_mode, rtx_def*,
rtx_def*)
../../gcc-trunk/gcc/simplify-rtx.c:4029
0x87077e3 simplify_binary_operation(rtx_code, machine_mode, rtx_def*, rtx_def*)
../../gcc-trunk/gcc/simplify-rtx.c:1987
0x870a9b6 simplify_gen_binary
../../gcc-trunk/gcc/simplify-rtx.c:212
0x8b6b047 if_then_else_cond
../../gcc-trunk/gcc/combine.c:8885
0x8b73a22 combine_simplify_rtx
../../gcc-trunk/gcc/combine.c:5492
0x8b7679f subst
../../gcc-trunk/gcc/combine.c:5429
0x8b76518 subst
../../gcc-trunk/gcc/combine.c:5374
0x8b76518 subst
../../gcc-trunk/gcc/combine.c:5374
0x8b78f03 try_combine
../../gcc-trunk/gcc/combine.c:3273
0x8b7f44f combine_instructions
../../gcc-trunk/gcc/combine.c:1309
0x8b7f44f rest_of_handle_combine
../../gcc-trunk/gcc/combine.c:14194
0x8b7f44f execute
../../gcc-trunk/gcc/combine.c:14237
... when combine tries to simplify the following rtx:
(and:SI (rotate:SI (reg:SI 170)
(const_int 16 [0x10]))
(const_int 4294901760 [0xffff0000]))
The problem is that in sh.md the constant 0xffff0000 is not written as sign
extended hwi values.
It's actually a latent bug, which seems to have gone unnoticed so far.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/65163] [5 Regression][SH] ICE in decompose at rtl.h:2007
2015-02-22 13:17 [Bug middle-end/65163] New: [5 Regression][SH] ICE in decompose at rtl.h:2007 olegendo at gcc dot gnu.org
@ 2015-02-22 13:48 ` olegendo at gcc dot gnu.org
2015-02-23 10:18 ` rguenth at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: olegendo at gcc dot gnu.org @ 2015-02-22 13:48 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65163
Oleg Endo <olegendo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-02-22
Component|middle-end |target
Ever confirmed|0 |1
--- Comment #1 from Oleg Endo <olegendo at gcc dot gnu.org> ---
The following seems to fix the issue:
Index: gcc/config/sh/sh.md
===================================================================
--- gcc/config/sh/sh.md (revision 220892)
+++ gcc/config/sh/sh.md (working copy)
@@ -6218,7 +6218,7 @@
(define_insn "swapbsi2"
[(set (match_operand:SI 0 "arith_reg_dest" "=r")
(ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand" "r")
- (const_int 4294901760))
+ (const_int -65536)) ;; 0xFFFF0000
(ior:SI (and:SI (ashift:SI (match_dup 1) (const_int 8))
(const_int 65280))
(and:SI (ashiftrt:SI (match_dup 1) (const_int 8))
@@ -6286,7 +6286,7 @@
(define_peephole2
[(set (match_operand:SI 0 "arith_reg_dest" "")
(ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand" "")
- (const_int 4294901760))
+ (const_int -65536)) ;; 0xFFFF0000
(ior:SI (and:SI (ashift:SI (match_dup 1) (const_int 8))
(const_int 65280))
(and:SI (ashiftrt:SI (match_dup 1) (const_int 8))
@@ -6296,7 +6296,7 @@
"TARGET_SH1 && peep2_reg_dead_p (2, operands[0])"
[(set (match_dup 2)
(ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand" "")
- (const_int 4294901760))
+ (const_int -65536)) ;; 0xFFFF0000
(ior:SI (and:SI (ashift:SI (match_dup 1) (const_int 8))
(const_int 65280))
(and:SI (ashiftrt:SI (match_dup 1) (const_int 8))
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/65163] [5 Regression][SH] ICE in decompose at rtl.h:2007
2015-02-22 13:17 [Bug middle-end/65163] New: [5 Regression][SH] ICE in decompose at rtl.h:2007 olegendo at gcc dot gnu.org
2015-02-22 13:48 ` [Bug target/65163] " olegendo at gcc dot gnu.org
@ 2015-02-23 10:18 ` rguenth at gcc dot gnu.org
2015-02-23 20:21 ` olegendo at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: rguenth at gcc dot gnu.org @ 2015-02-23 10:18 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65163
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P4
Target Milestone|--- |5.0
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/65163] [5 Regression][SH] ICE in decompose at rtl.h:2007
2015-02-22 13:17 [Bug middle-end/65163] New: [5 Regression][SH] ICE in decompose at rtl.h:2007 olegendo at gcc dot gnu.org
2015-02-22 13:48 ` [Bug target/65163] " olegendo at gcc dot gnu.org
2015-02-23 10:18 ` rguenth at gcc dot gnu.org
@ 2015-02-23 20:21 ` olegendo at gcc dot gnu.org
2015-02-23 21:06 ` olegendo at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: olegendo at gcc dot gnu.org @ 2015-02-23 20:21 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65163
--- Comment #2 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Mon Feb 23 19:16:34 2015
New Revision: 220916
URL: https://gcc.gnu.org/viewcvs?rev=220916&root=gcc&view=rev
Log:
gcc/
PR target/65163
* config/sh/sh.md (swapbsi2, related peephole2): Use const_int -65536
instead of const_int 4294901760.
gcc/testsuite/
PR target/65163
* gcc.c-torture/compile/pr65163.c: New.
Added:
trunk/gcc/testsuite/gcc.c-torture/compile/pr65163.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/config/sh/sh.md
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/65163] [5 Regression][SH] ICE in decompose at rtl.h:2007
2015-02-22 13:17 [Bug middle-end/65163] New: [5 Regression][SH] ICE in decompose at rtl.h:2007 olegendo at gcc dot gnu.org
` (2 preceding siblings ...)
2015-02-23 20:21 ` olegendo at gcc dot gnu.org
@ 2015-02-23 21:06 ` olegendo at gcc dot gnu.org
2015-02-23 21:06 ` olegendo at gcc dot gnu.org
2015-02-23 21:46 ` olegendo at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: olegendo at gcc dot gnu.org @ 2015-02-23 21:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65163
--- Comment #3 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Mon Feb 23 20:37:20 2015
New Revision: 220917
URL: https://gcc.gnu.org/viewcvs?rev=220917&root=gcc&view=rev
Log:
gcc/
Backport from mainline
2015-02-23 Oleg Endo <olegendo@gcc.gnu.org>
PR target/65163
* config/sh/sh.md (swapbsi2, related peephole2): Use const_int -65536
instead of const_int 4294901760.
gcc/testsuite/
Backport from mainline
2015-02-23 Oleg Endo <olegendo@gcc.gnu.org>
PR target/65163
* gcc.c-torture/compile/pr65163.c: New.
Added:
branches/gcc-4_9-branch/gcc/testsuite/gcc.c-torture/compile/pr65163.c
Modified:
branches/gcc-4_9-branch/gcc/ChangeLog
branches/gcc-4_9-branch/gcc/config/sh/sh.md
branches/gcc-4_9-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/65163] [5 Regression][SH] ICE in decompose at rtl.h:2007
2015-02-22 13:17 [Bug middle-end/65163] New: [5 Regression][SH] ICE in decompose at rtl.h:2007 olegendo at gcc dot gnu.org
` (3 preceding siblings ...)
2015-02-23 21:06 ` olegendo at gcc dot gnu.org
@ 2015-02-23 21:06 ` olegendo at gcc dot gnu.org
2015-02-23 21:46 ` olegendo at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: olegendo at gcc dot gnu.org @ 2015-02-23 21:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65163
--- Comment #4 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Author: olegendo
Date: Mon Feb 23 20:40:45 2015
New Revision: 220918
URL: https://gcc.gnu.org/viewcvs?rev=220918&root=gcc&view=rev
Log:
gcc/
Backport from mainline
2015-02-23 Oleg Endo <olegendo@gcc.gnu.org>
PR target/65163
* config/sh/sh.md (swapbsi2, related peephole2): Use const_int -65536
instead of const_int 4294901760.
gcc/testsuite/
Backport from mainline
2015-02-23 Oleg Endo <olegendo@gcc.gnu.org>
PR target/65163
* gcc.c-torture/compile/pr65163.c: New.
Added:
branches/gcc-4_8-branch/gcc/testsuite/gcc.c-torture/compile/pr65163.c
Modified:
branches/gcc-4_8-branch/gcc/ChangeLog
branches/gcc-4_8-branch/gcc/config/sh/sh.md
branches/gcc-4_8-branch/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug target/65163] [5 Regression][SH] ICE in decompose at rtl.h:2007
2015-02-22 13:17 [Bug middle-end/65163] New: [5 Regression][SH] ICE in decompose at rtl.h:2007 olegendo at gcc dot gnu.org
` (4 preceding siblings ...)
2015-02-23 21:06 ` olegendo at gcc dot gnu.org
@ 2015-02-23 21:46 ` olegendo at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: olegendo at gcc dot gnu.org @ 2015-02-23 21:46 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65163
Oleg Endo <olegendo at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #5 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Fixed on trunk, 4.9 and 4.8.
^ permalink raw reply [flat|nested] 7+ messages in thread
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2015-02-22 13:17 [Bug middle-end/65163] New: [5 Regression][SH] ICE in decompose at rtl.h:2007 olegendo at gcc dot gnu.org
2015-02-22 13:48 ` [Bug target/65163] " olegendo at gcc dot gnu.org
2015-02-23 10:18 ` rguenth at gcc dot gnu.org
2015-02-23 20:21 ` olegendo at gcc dot gnu.org
2015-02-23 21:06 ` olegendo at gcc dot gnu.org
2015-02-23 21:06 ` olegendo at gcc dot gnu.org
2015-02-23 21:46 ` olegendo at gcc dot gnu.org
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