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From: "kkojima at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/31403] wrong branch instructions generated with -m2a on sh-elf
Date: Fri, 20 Apr 2007 07:46:00 -0000 [thread overview]
Message-ID: <20070420074555.24163.qmail@sourceware.org> (raw)
In-Reply-To: <bug-31403-14137@http.gcc.gnu.org/bugzilla/>
------- Comment #2 from kkojima at gcc dot gnu dot org 2007-04-20 08:45 -------
A binary search shows that this started to fail from
the revision 123295
* config/sh/sh.md (movsi_ie): Fix memory constraints attribute length.
I'd like to add Christian to the cc list because he must be interested
in this issue. movsi_ie is used also for SH2A and I didn't know that
SH2A has 4-byte move instructions like mov.l reg,@(12-bit_disp,reg').
An easy fix would be the patch below, though I can't test it until
the other bootstrap/regtest cycles end up.
--- ORIG/trunk/gcc/config/sh/sh.md 2007-03-29 08:44:33.000000000 +0900
+++ LOCAL/trunk/gcc/config/sh/sh.md 2007-04-19 20:36:20.000000000 +0900
@@ -4968,7 +4968,36 @@ label:
! move optimized away"
[(set_attr "type"
"pcload_si,move,movi8,move,*,load_si,mac_gp,prget,arith,store,mac_mem,pstore,gp_mac,prset,mem_mac,pload,load,fstore,pcload_si,gp_fpul,fpul_gp,fmove,fmove,fmove,nil")
(set_attr "late_fp_use"
"*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,yes,*,*,yes,*,*,*,*")
- (set_attr "length" "*,*,*,4,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,*,0")])
+ (set_attr_alternative "length"
+ [(const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 4)
+ (const_int 2)
+ (if_then_else
+ (ne (symbol_ref "TARGET_SH2A") (const_int 0))
+ (const_int 4) (const_int 2))
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (if_then_else
+ (ne (symbol_ref "TARGET_SH2A") (const_int 0))
+ (const_int 4) (const_int 2))
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 2)
+ (const_int 0)])])
(define_insn "movsi_i_lowpart"
[(set (strict_low_part (match_operand:SI 0 "general_movdst_operand"
"+r,r,r,r,r,r,r,m,r"))
--
kkojima at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |kkojima at gcc dot gnu dot
| |org, christian dot bruel at
| |st dot com
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2007-04-20 08:45:54
date| |
Summary|Problem while compiling gcc |wrong branch instructions
|for sh-elf |generated with -m2a on sh-
| |elf
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31403
next prev parent reply other threads:[~2007-04-20 7:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-30 17:43 [Bug target/31403] New: Problem while compiling gcc for sh-elf mstein at phenix dot rootshell dot be
2007-03-30 18:15 ` [Bug target/31403] " mstein at phenix dot rootshell dot be
2007-04-20 7:46 ` kkojima at gcc dot gnu dot org [this message]
2007-04-23 6:59 ` [Bug target/31403] wrong branch instructions generated with -m2a on sh-elf chrbr at gcc dot gnu dot org
2007-04-23 8:53 ` kkojima at gcc dot gnu dot org
2007-04-23 22:43 ` kkojima at gcc dot gnu dot org
2007-04-26 0:30 ` kkojima at gcc dot gnu dot org
2007-04-29 12:41 ` kkojima at gcc dot gnu dot org
[not found] <bug-31403-4@http.gcc.gnu.org/bugzilla/>
2010-12-14 19:48 ` Stephen.Bartlett at opentv dot com
2010-12-15 0:36 ` kkojima at gcc dot gnu.org
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