[Bug target/21742] New: unrecognized insn for struct-layout-1 tests with complex members

[Bug target/21742] New: unrecognized insn for struct-layout-1 tests with complex members

[janis at gcc dot gnu dot org]

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Generated tests t154 and t199 from gcc.dg/compat/struct-layout-1 fail
with an ICE compiling c_compat_y_tst.o with -m64 on powerpc64-linux.
The first started failing on 20050424, the second on 20050501, and both
have failed regularly since then, but it seems to be a latent bug
because results for regression hunts don't match up with those dates.
                                                                                
I'll attach minimized test cases for both.  Here's the output I get from
today's mainline:
                                                                                
elm3b11% /opt/gcc-nightly/mline/bin/gcc -m64 -c bug_t154.c
bug_t154.c: In function ‘check13995’:
bug_t154.c:36: error: unrecognizable insn:
(insn 25 24 26 1 (set (reg:DF 130 [ D.1250+8 ])
        (subreg:DF (mem/s/j:DC (plus:DI (reg/f:DI 114 virtual-stack-vars)
                    (const_int 33112 [0x8158])) [0 <variable>.e.m+0 S16 A64])
8)) -1 (nil)
    (nil))
bug_t154.c:36: internal compiler error: in extract_insn, at recog.c:2082
                                                                                
elm3b11% /opt/gcc-nightly/mline/bin/gcc -m64 -c bug_t199.c
bug_t199.c: In function ‘check18102’:
bug_t199.c:23: error: unrecognizable insn:
(insn 29 28 30 1 (set (reg:SF 130 [ D.1239+4 ])
        (subreg:SF (mem/s/j:SC (plus:DI (reg/f:DI 114 virtual-stack-vars)
                    (const_int 56000 [0xdac0])) [0 arg2.y+0 S8 A512]) 4)) -1 (nil)
    (nil))
bug_t199.c:23: internal compiler error: in extract_insn, at recog.c:2082

-- 
           Summary: unrecognized insn for struct-layout-1 tests with complex
                    members
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: janis at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc64-linux
  GCC host triplet: powerpc64-linux
GCC target triplet: powerpc64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21742

[Bug target/21742] unrecognized insn for struct-layout-1 tests with complex members

[janis at gcc dot gnu dot org]

------- Additional Comments From janis at gcc dot gnu dot org  2005-05-24 20:55 -------
Created an attachment (id=8963)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8963&action=view)
Minimized test case for struct-layout-1 test t154.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21742

[Bug target/21742] unrecognized insn for struct-layout-1 tests with complex members

[janis at gcc dot gnu dot org]

------- Additional Comments From janis at gcc dot gnu dot org  2005-05-24 20:56 -------
Created an attachment (id=8964)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=8964&action=view)
Minimized test case for struct-layout-1 t199


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21742

[Bug target/21742] [4.1 Regression] unrecognized insn for struct-layout-1 tests with complex members

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
            Summary|unrecognized insn for       |[4.1 Regression]
                   |struct-layout-1 tests with  |unrecognized insn for
                   |complex members             |struct-layout-1 tests with
                   |                            |complex members
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21742

[Bug target/21742] [4.1 Regression] unrecognized insn for struct-layout-1 tests with complex members

[dje at gcc dot gnu dot org]

------- Additional Comments From dje at gcc dot gnu dot org  2005-06-28 22:49 -------
Created an attachment (id=9167)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9167&action=view)
patch


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |dje at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21742

[Bug target/21742] [4.1 Regression] unrecognized insn for struct-layout-1 tests with complex members

[dje at gcc dot gnu dot org]

------- Additional Comments From dje at gcc dot gnu dot org  2005-06-28 22:53 -------
simplify_gen_subreg of a complex MEM creates a SUBREG that cannot be recognized.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21742

[Bug target/21742] [4.1 Regression] unrecognized insn for struct-layout-1 tests with complex members

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-07-02 23:06 -------
Subject: Bug 21742

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dje@gcc.gnu.org	2005-07-02 23:06:43

Modified files:
	gcc            : ChangeLog expr.c 

Log message:
	PR middle-end/21742
	* expr.c (write_complex_part): Use adjust_address for MEM.
	(read_complex_part): Same.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9320&r2=2.9321
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/expr.c.diff?cvsroot=gcc&r1=1.799&r2=1.800



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21742

[Bug target/21742] [4.1 Regression] unrecognized insn for struct-layout-1 tests with complex members

[dje at gcc dot gnu dot org]

------- Additional Comments From dje at gcc dot gnu dot org  2005-07-04 17:52 -------
mainline testresults no longer show failure after patch applied.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21742