public inbox for gcc-bugs@sourceware.org help / color / mirror / Atom feed
* [Bug target/58475] New: SH4 insn swapb does not satisfy its constraints:
@ 2013-09-19 13:26 chrbr at gcc dot gnu.org
2013-09-19 13:38 ` [Bug target/58475] " chrbr at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: chrbr at gcc dot gnu.org @ 2013-09-19 13:26 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58475
Bug ID: 58475
Summary: SH4 insn swapb does not satisfy its constraints:
Product: gcc
Version: 4.8.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: chrbr at gcc dot gnu.org
Created attachment 30863
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=30863&action=edit
test case
cc1 -Os -m4 swapb_ice.c -o 2.s -quiet
swapb_ice.c: In function 'kerninfo':
swapb_ice.c:15:1: error: insn does not satisfy its constraints:
}
^
(insn 35 8 10 2 (set (reg:SI 150 fpul)
(ior:SI (and:SI (reg:SI 4 r4 [170])
(const_int 4294901760 [0xffff0000]))
(ior:SI (and:SI (ashift:SI (reg:SI 4 r4 [170])
(const_int 8 [0x8]))
(const_int 65280 [0xff00]))
(and:SI (ashiftrt:SI (reg:SI 4 r4 [170])
(const_int 8 [0x8]))
(const_int 255 [0xff]))))) swapb_ice.c:14 209 {swapbsi2}
(nil))
swapb_ice.c:15:1: internal compiler error: in copyprop_hardreg_forward_1, at
regcprop.c:774
Only fails for -m4 (-m2, ... are OK)
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug target/58475] SH4 insn swapb does not satisfy its constraints: 2013-09-19 13:26 [Bug target/58475] New: SH4 insn swapb does not satisfy its constraints: chrbr at gcc dot gnu.org @ 2013-09-19 13:38 ` chrbr at gcc dot gnu.org 2013-09-20 13:50 ` olegendo at gcc dot gnu.org ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: chrbr at gcc dot gnu.org @ 2013-09-19 13:38 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58475 --- Comment #1 from chrbr at gcc dot gnu.org --- The problem is that [(set (match_operand:SI 0 "arith_reg_dest" "=r") (ior:SI (and:SI (match_operand:SI 1 "arith_reg_operand" "r") accepts fpul registers in the predicate, but not in the constraints. The reason is that arith_reg_dest is tricked to accept FPUL_REG when TARGET_SH4. There is no reason that a fpul register is accepted as a source operand for an arithmetic op, unless the floating point transfer needs to be expressed in the rtl, so fpul will need reloading. . ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/58475] SH4 insn swapb does not satisfy its constraints: 2013-09-19 13:26 [Bug target/58475] New: SH4 insn swapb does not satisfy its constraints: chrbr at gcc dot gnu.org 2013-09-19 13:38 ` [Bug target/58475] " chrbr at gcc dot gnu.org @ 2013-09-20 13:50 ` olegendo at gcc dot gnu.org 2013-09-23 8:30 ` chrbr at gcc dot gnu.org 2013-09-23 8:55 ` chrbr at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: olegendo at gcc dot gnu.org @ 2013-09-20 13:50 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58475 Oleg Endo <olegendo at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |sh*-*-* Status|UNCONFIRMED |NEW Last reconfirmed| |2013-09-20 CC| |olegendo at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #2 from Oleg Endo <olegendo at gcc dot gnu.org> --- FPUL handling seems to need some work in general, see also PR 54429 and PR 48596 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/58475] SH4 insn swapb does not satisfy its constraints: 2013-09-19 13:26 [Bug target/58475] New: SH4 insn swapb does not satisfy its constraints: chrbr at gcc dot gnu.org 2013-09-19 13:38 ` [Bug target/58475] " chrbr at gcc dot gnu.org 2013-09-20 13:50 ` olegendo at gcc dot gnu.org @ 2013-09-23 8:30 ` chrbr at gcc dot gnu.org 2013-09-23 8:55 ` chrbr at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: chrbr at gcc dot gnu.org @ 2013-09-23 8:30 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58475 --- Comment #3 from chrbr at gcc dot gnu.org --- Author: chrbr Date: Mon Sep 23 08:30:00 2013 New Revision: 202825 URL: http://gcc.gnu.org/viewcvs?rev=202825&root=gcc&view=rev Log: 2013-09-23 Christian Bruel <christian.bruel@st.com> PR target/58475 * config/sh/sh.md (movsf_ie): Allow fpul_operand. * config/sh/predicate.md (arith_reg_operand): Disallow FPUL_REG. Added: trunk/gcc/testsuite/gcc.target/sh/torture/pr58475.c Modified: trunk/gcc/ChangeLog trunk/gcc/config/sh/predicates.md trunk/gcc/config/sh/sh.md trunk/gcc/testsuite/ChangeLog ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/58475] SH4 insn swapb does not satisfy its constraints: 2013-09-19 13:26 [Bug target/58475] New: SH4 insn swapb does not satisfy its constraints: chrbr at gcc dot gnu.org ` (2 preceding siblings ...) 2013-09-23 8:30 ` chrbr at gcc dot gnu.org @ 2013-09-23 8:55 ` chrbr at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: chrbr at gcc dot gnu.org @ 2013-09-23 8:55 UTC (permalink / raw) To: gcc-bugs http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58475 chrbr at gcc dot gnu.org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #4 from chrbr at gcc dot gnu.org --- Fixed on trunk ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2013-09-23 8:55 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2013-09-19 13:26 [Bug target/58475] New: SH4 insn swapb does not satisfy its constraints: chrbr at gcc dot gnu.org 2013-09-19 13:38 ` [Bug target/58475] " chrbr at gcc dot gnu.org 2013-09-20 13:50 ` olegendo at gcc dot gnu.org 2013-09-23 8:30 ` chrbr at gcc dot gnu.org 2013-09-23 8:55 ` chrbr at gcc dot gnu.org
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).